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February, 2011
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Caverns
11/5/2011 6:58:45 PM
Caverns Measureless to Man’*
 
 ‘Caverns Measureless to Man’ is the part autobiography of Sheck Exley – arguably the greatest cave diver to date. In a sport where the smallest mistake or error in preparation can be fatal, Exley led the way for nearly 30 years introducing and developing a number of techniques, such as the ‘rule of thirds’ and lining out procedures,  that have come down into common practice in recreational and technical wreck diving as well as establishing a range of records: Underwater Cave Depth; Underwater Cave Penetration; Cave Diving Traverse.
 However, by his own admission, one of Exley’s first forays into cave diving in his native Florida nearly ended in disaster. Having accompanied his low on air buddy  back to the entrance, Exley then returned, without a guideline because of fear of entanglement, to a tunnel in Peacock Springs to explore further and, on turning for home became lost ending up short of air in a dead-end and only surviving by managing to enlarge a small crack in the cave ceiling and dig his way out. As one of his regular buddies commented in what seems to be a typical Floridian, deadpan way ‘I guess we’ll be taking the guideline this time’. In many ways, this example seems typical of the man. In a sport where one might expect a macho attitude, Exley is comfortable to share his experiences, good and bad, and where appropriate to say he had been wrong and even make fun of himself. The tale of Montezuma’s Revenge in Mante is not one that one can imagine many world leaders in technical diving sharing with the world!
Through the whole book the attitude is one of this is what I did, this is what went wrong (or right) this is what I learnt from it and Exley’s absolute passion for his sport shines through at all times. Perhaps because of this and because he freely acknowledges the help and support he received from his buddies and back-up teams, Exley seems to be one of the rare ground-breaking, record-breaking, world class divers that no-one has a bad word to say about. In all the books I have read referring to cave diving, Exley is mentioned with respect and admiration. Unfortunately this respect is for the most part posthumous. In April 1994 the same year this book was published, Sheck Exley died, in Xacatun, Mexico attempting a dive to what he referred to as ‘a nice round number’ – 1,000 ft.
 *For those of you who like to know these things, the title is a quote from a Coleridge poem Kubla Khan:  ‘ where Alp, the sacred river, ran through caverns measureless to man, down to a sunless sea’.
Exley, S., (1994) Caverns Measureless to Man. St. Louis, MO: Cave Books.
ISBN: 0-93974892598
 
Cylinders
11/5/2011 6:57:13 PM
MESSAGE IN A BOTTLE
by Ron Morris
 
The reason for this article is simple; Earlier in the newsletter you will have seen the Dive magazine report on the near fatal explosion of two scuba cylinders at an air filling station. So I did a little searching - with the intention of teaching myself (and now you) a little about cylinder testing and standards.
Pay attention please - this might just save your life....
 
"One should never underestimate the explosive power of a filled cylinder"
It's easy to get complacent with cylinders; they can get exposed to all sorts of abuse including excessive heat and physical damage.
Make sure your cylinders are properly serviced and protected.
 
Know your cylinders - a fascinating insight into a key component of diving; courtesy of Divernet.

Types of cylinders
Steel cylinders (right of picture) are made by drawing and spinning and are 4-5mm thick. They are usually galvanised prior to painting.
Aluminium alloy (left) is made by extrusion and forming. They are not as strong as steel and therefore require an 11mm wall thickness. They are anodised prior to painting and do not corrode as much as steel. Aluminium cylinders are easily identified by their flat bottom.
Regulations  - New Standards BS EN 1968 and 1802
In March 2002, European standards for cylinder testing were changed. The familiar old BS 5430 part 1 (steel cylinders) & part 3 (aluminium) were withdrawn and replaced by new standards - BS EN 1968:2002 for Steel Gas Containers, and BS EN 1802:2002 for Aluminium Gas Containers.
IDEST, the Inspectorate for Diving Equipment Servicing and Testing, advised approved test centres to implement the new standards by 31st August 2002. These came into force on 1st September 2002.
 Labelling and Marking
The Carriage of Dangerous Goods Regulations (1996) requires that cylinders are either correctly labelled with their contents OR that they are painted in the approved scheme (i.e. for compressed air and Nitrox this means the black and white quarters on the shoulder).
EN 1089
A new standard was also introduced - EN 1089 Gas Cylinder Identification. This sets new standards for stamp marking, precautionary labels and colour coding.
 Stamps Marking
The test or inspection date stamp punched into the cylinder will from now on show the year in full, followed by the month (as opposed to month then year as now). This could be confusing.
In addition to stamping the cylinder with the test date, it will also be mandatory to mark the cylinder with punch-out stickers to make it easy to see when the cylinder is next due for test.
Contents Labels
According to the new standard EN 1089 part 2, cylinders must now also have stickers showing their intended contents, e.g., Breathing Air, Nitrox or Trimix.
 Colour Coding
All new diving cylinders will have the black and white quadrants painted on the cylinder's shoulder. Many recreational divers will of course have (and will have for many years) the older colouring and may run into problems getting them filled.
 
Officially, professional divers 'at work' must use the new standard colouring, however the definition of 'at work' is not clear. The Health and Safety Executive have said that it is the prerogative of a dive shop or commercial air station to insist on the correct labelling of cylinders because the person filling the cylinder is 'at work'.
 
In the event of a diving accident the HSE can come back to the commercial operator and investigate the circumstances surrounding the filling of the cylinder. if anything at all were to go wrong as a result of the cylinder having not in fact been safe or the contents mis-identified, then they may well be legally liable for failing in their "duty of care" to ensure that only safe cylinders are filled.
Air Fills
The new standards make recommendations. This is important because it is not in itself illegal for a dive shop to fill a cylinder which does not have, say, a contents label conforming to EN 1089 Pt 2.
Air cylinders that are not used 'at work' and are currently in test according to BS5430 do not have to adopt labelling or painting. This will be left to the discretion of the owner but you are recommended to follow the requirements of the Carriage of Dangerous Goods Regulations.
It is ultimately up to the filler to decide whether a cylinder is safe to fill or not. If they are not completely satisfied this is the case they have every right to refuse to fill the cylinder.
 Hydraulic Testing
The hydraulic test period has now been changed from 4 to 5 years. This has been done mainly to bring it into line with standards for testing other industrial compressed gas cylinders. Similarly visual inspection periods have changed from 2 years to 2½ years after a hydraulic test.
The new standard doesn't extend the test expiry for cylinders with a current test-due date. In other words, cylinders tested before the new standards came into force, and with either no test-due sticker (see below) or a 2-year sticker, will still need their next test at the expiry date of the old 2-year interval test/inspection.
Don't forget that as before, the hydraulic test period is not affected by the date of the visual inspection. For example, say you don't use your cylinder for a year or so then have it visually inspected 3½ years after its hydraulic test. The cylinder will only then be in test for a further 18 months. This is because you will need another hydraulic test five years after the last, regardless of the visual inspection date.
In this test the cylinder is filled with water and then placed inside a water-filled chamber. The water pressure inside the cylinder is then increased to one and a half times its maximum working pressure. This is sufficient to cause the cylinder to expand slightly. This expansion causes the water outside the tank to be displaced and this is channelled into marked collection tubes that allow it to be measured. If the tank's expansion is within acceptable limits (< 5%), it successfully passes the test. If not, the tank must be destroyed!
After pressure testing, tanks that pass are cleaned and dried, then stamped with the current month and year and the tester's individual stamp.
Visual Inspection (every 2.5 years)
Essentially this test is a detailed visual inspection, both internal and external with the following failure criteria:
·         Bulge - all fail
·         Dent - fail if any greater than 2 mm
·         Wear - reduction of wall thickness greater than 25%
·         General Corrosion - reduction of wall thickness greater than 20% OR where original surface is not visible
·         Area Corrosion - (i.e., where corrosion is limited to less than 20% of surface) a reduction of wall thickness greater than 25%
·         Isolated pitting - Reduction of wall thickness greater than 40%
·         Thread damage - all physical damage or imperfections (re-cutting of threads can be achieved up to a maximum tolerance).
Any cylinder that has been subject to impact damage should be pressure tested before use. If in the opinion of the inspector, any of the above criteria are borderline, then hydraulic testing may also be required.
 Test procedures
All testing is undertaken by qualified and experienced technicians. The procedure is as follows:
·         Removal of the tank boot, bands, valve and all labels.
·         The exterior of the tank is then inspected for impact damage and corrosion.
·         The interior of the cylinder is examined using a special endoscope.
·         Dental mirrors may enable the inspector to examine the area around the inside of the tank neck.
·         The valve is checked for smooth operation and its threads lubricated to help prevent galvanic action between the dissimilar metals of the tank and valve.
·         Valves also require overhauls, just like scuba regulators.
·         If no corrosion or damage is detected, the cylinder is reassembled and filled.
·         A sticker is then placed on the tank which identifies the facility providing the inspection and the month and year in which the inspection was done.
·         If damage or corrosion is detected, the technician will decide upon an appropriate course of action.
·         Minor scale or the presence of contaminants on the inside of an aluminium cylinder can usually be removed by rinsing with distilled water and drying with warm air.
·         Minor oxidation on the inside of a steel cylinder may be best left untreated due to the fact that the process of removing it might actually weaken the cylinder more than the oxidation itself.
·         Extensive oxidation or deep pitting is treated by degrees of sand blasting.
 Test Certificate
Centres and shops should now ensure that the paper test certificates issued with a tested cylinder bear the name of the cylinder's owner, not just whoever dropped it off for testing.
 More Stringent Testing
The new standards are more stringent and require that all but the very lightest of corrosion needs to be cleaned. This means that your maintenance costs will go up although they will be slightly less frequent. In addition, the criteria for failing cylinders are now much stricter. The new standard accepts less damage, set (the degree to which the cylinder permanently stretches during a hydraulic test) and corrosion on a cylinder before it's scrapped.
 Enriched Oxygen Cylinders
Shops and filling stations will demand that inspections and cleaning for Nitrox cylinders are carried out at 15 month intervals. This is because O2 cleaning is concerned not so much with the integrity of the cylinder, but whether or not it is clean enough to carry pure Oxygen. A diver should treat O2 cleaning as something entirely independent of visual and hydraulic testing.
 Mini Cylinders
Cylinders of 0.5 litres or less are NOT covered by the new standards. These will still be tested to the old standards (BS 5430 part 6) with the test intervals of 2 and 4 years.
 Cylinder valve
Most are Balanced type which means that high pressure air is acting on both sides of the valve assembly to prevent any stiffness while turning the valve
Some have a pressure relief valve fitted called a burst disc.

The cylinder valve is fitted into the neck of the cylinder and is provided with an 'o' ring seal so that the diving regulator can be connected to it. The valve is screwed into the cylinder neck with either a taper thread seal or a parallel thread seal and o ring. It is not recommended that divers attempt to service their own cylinder valves, unless they possess specialist skills. Provided that the cylinder valve is washed in fresh water after use and is kept clean, there should be no need for it to be serviced between the intervals of cylinder test.
 The Heath and Safety Executive (HSE) have produced a document entitled The Safe Use of Gas Cylinders
 
 
K 19
11/5/2011 6:54:33 PM
This Wreckage…
 by Ron Morris
 
Eighteen meters…
200 Bar…
Eleven degrees…
 The descent down the shot line seemed to take forever… It’s dark, even on the deck – and cold. Why do I feel so cold? Fighting my hesitation, I breathe slowly and deeply. My buddies Joan and Tim each signal an “OK” and tentatively I respond in kind. Looking around I familiarise myself with the old ship – and focus on the task at hand. Involuntarily, I find myself chanting the mantra out loud into my regulator – “Plan the Dive and Dive the Plan”. How sad is that?
We move slowly from stern to bow, across the scarred mix of grey steel and wooden planking. Before us is the rising tower of the wheelhouse; its shadow dwarfing us in the half light. But closer and lower down, we meet our objective – the entrance to the hold; a big black square, just waiting to swallow an unsuspecting diver whole. In rehearsed unison we shine torches down into the darkness. The entrance is clear and the lights reassuringly reach the lower deck; there’s about two meters of space to move in and no obstructions. I bend over the opening and tentatively turn off the beam. Faintly, towards the bow, I see daylight – our exit… So far, so good. I fumble for the reel, carefully tying off the line at a nearby winch as we prepare to penetrate the wreck – then signal to Joan and Tim and we silently rundown the checklist;
 Torch… Torch… Torch…
Backup torch… Backup torch… Backup torch…
Reel… Reel… Reel…
190 Bar… 200 Bar… 200 Bar…
 
Already I’m using more air…
 
We each signal an “OK” and as agreed, I go in first. Grabbing the raised edge of the hold, I tuck my fins in and swing over the entrance. Pointing my torch down into the hole and holding the reel clear of my body, I exhale.
It’s a short drop. The edge of the hold has scarcely passed my head before my fins touch down. Leaning forward I kneel on the uneven deck and take a look around. The hold is a simple rectangular chamber, perhaps four meters across. The sides are lined with pipes and conduits and instinctively I move across to the nearest one and tie-off the line. Shining the torch forward I can make out the stark steel staircase leading up to the wheelhouse – and daylight… Further beyond, in the gloom there’s another door to the bow storage. But that’s out of bounds – well, for today anyway…
Looking up to the entrance, my buddies are waiting, peering in like Meerkats. I signal an OK and they follow – first Joan, then Tim. Tim signals for us to move forward and turning towards the wall I hand the reel to Joan. Slowly we proceed. I man the light, and Joan ties off the line at short intervals – thank God for that conduit! It’s a slightly bumpy journey as we try hard to stay in contact with the line, avoid each other and control our buoyancy – all at the same time. “Slowly, carefully” I say to myself - ever mindful of silt and the blackout it can bring to the unwary.
Looking around we see the leftovers found in all abandoned vessels. Here and there an odd twist of unclipped cable or piping; a discarded wooden box – and moving closer, a plastic wreath of flowers… Clearly an odd sort of joke, because our research on this vessel showed no indication of any deaths aboard… Amused I turn back to the wall. Then, suddenly, Joan and I bump heads and I wince as the cold water spills into my mask robbing me of vision. As I swear at my stupidity, an unseen hand steadies me. I blow out the water and blink my way back to reality. “Thanks Tim”, I gesture…
Gathering my composure, we move on – more methodically this time. Slow breaths, steady hands, until after what seems an eternity we reach the base of the staircase and pause.
 
Twenty One meters…
170 Bar… 180 Bar… 190 Bar…
 
Calm down, Ron…
 
Joan goes up the ladder first, momentarily blocking the light as she eases herself through the comparatively small hatch and into the left side of the wheelhouse. Then I follow, taking up more of the clear space on the right. Soon, Tim joins us in centre spot – and we look out through the empty windows across the bow. The wheel and instruments are long gone, but the shapes and attachment points are all too familiar. Stretched out before me, the “business end” of the ship looks larger than it actually is. Lost in awe for a moment, I try to imagine how the Captain felt as he steered onwards across the sea… But in truth, there’s little left to give me a clue. Outside is just grey water. A fish swims past my mask, and my moments dream is broken.
 
160 Bar… 170 Bar… 180 Bar…
 
The exchange of hand signals is followed by “turnaround” gesture from Tim; time to go home. With so little space in which to move, he’s both last in and first out. With practiced ease, he leans back and exhales – gliding silently out of the door and rolling to his left at the same time. Neatly swapping hands on the safety line, he falls slowly away, stopping dead in the water half a metre from the deck. He turns and looks up, gesturing Joan to follow.
 “I’ll dive like that one day”, I think to myself…
Handing me the reel, and using a handrail for leverage, Joan guides herself out of the door and down the line to Tim. Then, I follow – winding in the line as I go.
The journey back is much easier. Tim goes ahead, slowly, and Joan follows, holding the torch for me as I untie and reel in the line. In what seems like no time at all we’re back in the comparative light of the entrance hatch and with a certain amount of relief, we ascend to the stern deck.
 
Eighteen metres
150 Bar… 160 Bar… 175 Bar…
 
“Not bad at all” I quietly reassure myself…
 With the main part of our dive complete, we take an opportunity for a second look at the outer hull. Moving hand over hand along the side rails we soon reach the wheelhouse where we’d been just a few minutes ago, and I realise that looking in is not nearly as emotive as looking out. “Crawling” along to the bow, past the winch gear, we drop over the side and pause, hanging in the water alongside the outstretched anchor chain. Tim gestures backwards to the nameplate on the bow – “STANEGARTH” and gives a big double “OK”
 We’re joined by Dan – Tim’s Dive master colleague (who was never far away) and we all shake hands. It’s clear from the gesture that we’ve just passed our Wreck Diver course – did I mention that Tim was our instructor…? For the first time in twenty minutes, reality returns.
Now, 150 dives later, it’s nice to stop and reflect on old challenges – and the start of an adventure. For that’s my best description of a wreck dive – an adventure.
 
So, Why Wreck Dive?
 There are all sorts of reasons why people get into wreck diving. Not least of all the sheer quantity of available wrecks. More ships have sunk around the coasts of Britain than any other country in the world; best estimate is over a quarter of a million. Most of these shipwrecks came about by collision, storm, or bad navigation. But many merchant ships (more than 7000 of them British) went to the bottom having been torpedoed by German U-boats during the First and Second World Wars.
But even quantity and availability aren’t the full answer. For many, it’s the thrill of seeing a ship that has lain undisturbed for decades. As it looms up out of the underwater fog, it’s all too easy to imagine that no-one knew she was there - with all the thrill of being the first to see her since she sank.
Others see a shipwreck as a time capsule into history – just waiting to be explored. Many sport divers have made interesting finds while exploring the remains of sunken ships – and contrary to popular opinion, many of these artefacts have been shared with historians and archaeologists, making a valuable contribution to wreck identification and fuelling further research.
Such a task presents a unique challenge. The luckiest of divers may find the ship's bell with her name on it, or the builder's brass nameplate poking out of the wreckage. Finds such as a crested plate, or something from her cargo may identify her. However it’s far more likely that they will surface without knowing her name. The discovery of an "unknown" wreck leads many divers on a relentless hunt through old records in libraries until the whole story of her sinking is revealed.
 For the naturalists too – wreck diving is well worth the effort. A shipwreck is often the only thing standing up from a flat seabed plain. In time it becomes an artificial reef and a magnet for all kinds of marine life. Big conger eels live in most shipwrecks. Lobsters call them home, as do big crabs - and shoals of fish are always to be found circling around.  In recent years it has become fashionable to deliberately sink disused ships for exactly this purpose.
Forbidden wrecks
 Not all wrecks can be dived – certain ones are (quite rightly) protected by law. These are wrecks of historic importance and "War Graves".
Around the UK coast, some forty-eight wrecks dating from a Bronze Age galley to a submarine from 1880 are designated “protected”. All diving on them is banned without special permission. A classic example of this kind of wreck is Henry VIII's flagship Mary Rose, sunk in 1545. After being found by amateur divers, she was protected until raised and put on show at Portsmouth.
 Others are “War Graves" because they are known to contain the mortal remains of service personnel. Though divers may visit these wrecks - it is only on a look-but-don’t-touch basis. Entering such wrecks is forbidden, as is removing any artefacts from them.
 Hidden Dangers
Wreck diving has its own special dangers and is not for the untrained or inexperienced. Like all amateur diving, it is never carried out alone. There is the risk of running low on air due to becoming absorbed in exploring the wreck, or getting entangled in fishing net (sometimes many nets are draped over one ship).
Even swimming under a piece of wreckage is dangerous. Hanging wreckage may be so unstable that it will fall because of the disturbance which is caused by the diver's exhaust bubbles or fin movements. It’s not unknown for divers to become trapped by falling metal. The lucky have been saved by the prompt action of their buddy. Others have not fared so well.
Visibility is a major issue in wreck diving. Silting of a wreck takes place very quickly after her sinking. This makes it very dangerous to enter a wreck without some foolproof method of return to a clear exit point. (earlier I described the use of a line). Sometimes, just a few fin strokes inside a wreck are enough to reduce visibility to zero. In that black cloud, even the most powerful of torches (which every wreck diver carries) might not show you a way out to the open sea. Wreck penetration is not a spur of the moment thing. It has to be carefully planned.
 However, the real “hidden danger” lies in the extended bottom time required to explore them. Even the novice wreck diver is bound to consider exploring inside the wreck if a suitable hole or entrance is found. With the clock ticking away steadily in the background, divers have lost their lives through running out of breathing gas before they could exit the wreck and return safely to the surface.
 I’m unsure - Is it really for me?
 Well, that’s a hard question for me to answer. The choice is yours - but I can say this…
 If treated with respect, a shipwreck is not just one dive – it’s twenty. To properly know a wreck, you’ll tour the outside multiple times – sizing it up, learning it’s entry and exit points and appreciating its lines and function. You’ll likely learn something of its history and come to regard it as you would an old friend.  By the time you’re ready to penetrate the hull, you’ll have enlisted the help of a trusted buddy. Like the wreck, he (or she) will have become a friend too. Each of you will have trained in wreck diving and practised your craft as a team. When you finally go for the big dive, you’ll be proud of your achievements – perhaps proud enough to share it with us in this very newsletter.
Think about it… I’m nothing remarkable - just a fat scouser coming back from a broken back. But I know what I want – and I’m aiming to be back on the Thistlegorm in September. Trust me - it’s awesome. Arguably the world’s most talked about dive…
Would you like to come along?
As ever – if you have the will, Mick can provide the training. In an unashamed “arm up his back” move, I have talked him into offering Wreck Diver as a forthcoming Speciality course for club members– keep an eye on this forum and future newsletters for scheduling.
 Thanks for reading. I hope it’s entertained you.
I’ve no idea what I’m writing about next month….
Ron.
 
Red Sea Wrecks
19/2/2011 2:51:13 PM
THE TALL SHIPS
 
By Ron Morris
 
In september we are probably going to do a live-aboard  - and given that we may be embarking on a "wrecks & reefs" tour, I thought I'd take some time to research the various ships lost in the Red Sea. As I trawled the web, the first thing I discovered was that the list is huge - so there was no possibility of including them all - there won't be that many newsletters in my lifetime... What I have done however, is taken a special look at a few of those we might visit.
 
As you read, spare a thought for Mike Atkinson who will be spending some of his hard earned holiday time offering to teach wreck diving to anyone who'd care to sign up. I would doubt there's any better place to do a wreck speciality than the likes of Abu Nuhas.
 
As ever details are available at the dive centre - or you can email using the addresses page 7.
 
So, here we go - breathe deeply and try to imagine... 
 
 
 
The SS Thistlegorm
 
Location;     Northeast of Shag Rock, Sha’ab Ali
 
Minimum Depth to Wreck;     10m (at Bridge)
 
Maximum Depth to Seabed;     31m (Railway Engine)
 
Average Visibility;     25-30m
 
 The Ship
 
The Steam Ship Thistlegorm was built by Joseph Thompson & Sons of Sunderland and launched in June 1940. She was 126.5m in length and displaced 4,898 gross tonnes. Powered by a triple-expansion, 3 cylinder steam engine that generated 365 horsepower, she was one of a number of "Thistle" ships owned and operated by the Albyn Line. With her construction being part funded by the British Government, however, she was destined for "War" duties from the moment she was launched.
 
The Loss of the Thistlegorm
 
Despite her designation as an "Armed Freighter" with an additional armoured Gun Deck built over the aft section, an overall shortage of weapons, meant that only an old 4·7" gun and a heavy calibre machine gun (both of WW1 vintage), were all that could be spared for the Thistlegorm. Her maiden voyage was to the USA to collect steel rails and aircraft, her second voyage was to South America for grain and her third was to the West Indies from where she returned with sugar and rum.
 
 It was during the second trip that the Captain decided on some gunnery practise. However, the 4·7" gun was so badly worn that its automatic mechanism had been replaced with a manual breech. This meant that a second person had to push the barrel around by hand as it was being fired! After just one shot, the second round jammed in the breech and was liable to explosion at any time. As a solution a long rope was tied to the firing mechanism and led away to a shelter behind the aft mast house – from where some unfortunate soul was given the order to pull sharply! The resultant flash engulfed the entire stern of the ship - with the projectile managing a whole 50m before dropping into the sea. Thus ended all gunnery practises.
 
In May 1941, the Thistlegorm was in her home port of Glasgow loading supplies essential for the 8th Army and the relief of Tobruk. Though described on the manifest as "MT" (Motor Transport), this (probably deliberate) non-description hid a wide array of Land Mines, Shells, Ammunition, Weapons, Bedford Trucks, Armoured Cars, Bren-Carriers, BSA Motorcycles, Trailers, Vehicle spares, Aircraft and Aircraft parts, Radios, Rubber thigh-boots - and a great deal more besides. To save cargo space, the Motorcycles were placed onto the back of the Bedford trucks - three at a time before loading. Finally, being a commercial company, the Albyn Line also took the opportunity to deliver two sets of rolling stock to Egyptian Railways - each comprising an 0-6-0 Railway Engine, one Tender and one Water Carrier - all six items being carried as deck cargo. Because of her classification as an "Armed Freighter" the Skipper - Captain William Ellis, had an additional team of nine Royal Navy personnel on board to man these guns. Thus it was that on 2nd June 1941 Captain Ellis ordered the mooring lines slipped before easing his ship out of Glasgow. Sailing independently down the west coast of the British Mainland, the Thistlegorm made good time to her secret rendezvous off the south coast of England. Here she joined a large convoy and, being armed (?), was assigned a prominent position by the Convoy Commodore.
 
With Axis Forces occupying almost the entire northern Mediterranean coastline, the safest route to Alexandria was via South Africa - a lengthy detour. After refuelling in Capetown, they were joined by HMS Carlisle - a Light Cruiser of 4,190 tons. The Convoy then proceeded up the east coast of Africa before finally entering the Red Sea.
 
By the time they arrived at the entrance to the Gulf of Suez it was the third week in September and the Thistlegorm was immediately assigned "Safe Anchorage F" to await further instructions. The Master let out the starboard anchor and some 250m of chain and was satisfied that all was well. This was "good holding ground" and, at long last, the main engines were closed down. All they could do now was wait for clearance to proceed through to Alexandria. At this time, however, two vessels had collided further up the Gulf of Suez and were virtually blocking the entire entrance to the Canal. This led to the "Thistlegorm" - with her valuable cargo, remaining at anchor for a full two weeks.
 
Up until now these "Safe Anchorages" - each with its own letter of the alphabet, were regarded as exactly that, Safe! There were no enemy ships and enemy aircraft rarely ventured this far south. This was, however, all about to change when German Intelligence received information that a large troopship (possibly the Queen Mary) was due to travel through the Suez Canal with 1200 British Troops destined for North Africa.
 
Having mastered the relatively new skill of night flying, Heinkel He 111's from II/Kg26 (No 2 Group 26th Kampf Squadron) based in Crete were alerted - their task to seek and destroy. At 2250 hours on 5th October 1941 two twin-engine Heinkels crossed the north Egyptian coast heading south-east in search of this prize.
 
 Aided by a clear moonlit night, they searched in vain for the big ship until fuel levels became critical. Then, just as they were on the point of returning home empty handed, one of the pilots spotted a ship at anchor. Turning, he came in low over the sea and, as he approached the bows of the Thistlegorm, released two bombs right over her bridge. Both bombs penetrated No 5 hold - aft of the bridge, detonating a great deal of ammunition. The resultant explosion sent the two locomotives spiralling into the air as the ship was ripped open like a huge tin can. Even to this day, the rear decks are peeled back towards the Bridge leaving many a Diver wondering what exactly he is looking at. The vessel began to sink and the crew quickly abandoned ship - with hardly any time to launch the lifeboats, most of them leapt straight into the sea. One injured man, however, was trapped on the blazing deck and desperately needed help. Crewman Angus McLeay wrapped some rags around his bare feet and ran across the hot steel plates to rescue him - an action for which he was later awarded the George Medal and Lloyd’s War Medal for Bravery at Sea.
 
Caught unawares, the Thistlegorm had been given no time to defend herself and she quickly sank. It was timed at 0130 hrs 6th October 1941. Captain Ellis and the other survivors were rescued by HMS Carlisle and then taken to Suez where he reported four members of his crew of 39 and five of the 9 Royal Navy ratings had all lost their lives. Captain Ellis was subsequently awarded the OBE - for "War Services" by King George VI.
 
 The Ship Today
 
For many years, British vessels passing the site where the Thistlegorm was lost would dip their flags as a mark of respect for those who died. The ship itself, however, remained undisturbed until the early fifties when Jacques Cousteau discovered her. He raised several items from the wreck - including one of the motorcycles, the Captain’s safe and the ship’s bell. Indeed the February 1956 edition of "National Geographic" clearly shows the ship’s bell in place and his Divers in the ship’s "Lantern Room" - all of which were also still in place at that time. Cousteau, however, did not reveal the ship’s position and, once again, the Thistlegorm passed into obscurity. All that changed in the early nineties when a group of divers happened upon her by chance. In so doing, they had re-discovered one of the greatest diveable shipwrecks of all time.
 
The SS Thistlegorm sits mast and funnel above all others shipwrecks. Such is the pulling power of this single vessel that she attracts more Divers than any other underwater site - anywhere in the entire world! Since being re-discovered in the early nineties, the Thistlegorm has consistently remained the world’s foremost diving attraction. What makes this ship so extra-special is a combination of several factors. Despite extensive damage aft of the Bridge, the main section is upright and on an even keel. Then, there is the story of her passing, with all it’s ingredients of war, heroism and tragedy - something that is never re-created in any vessel deliberately sunk. Remember that even the Titanic would have passed into obscurity were it not for the manner of her sinking! Then, prevailing conditions and accessibility all come into play. These include an acceptable climate, relatively warm waters, very good underwater visibility and a maximum depth of just 32 metres to the seabed. What more could be asked of any shipwreck you might ask - and the word "Cargo" springs to mind. Within the Thistlegorm, that cargo is a veritable underwater World War II museum.
 
Diving the Thistlegorm
 
Since the later part of 2007, the Thistlegorm has been equipped with a ring of permanent moorings surrounding her hull. These allow both day boats and larger vessels to “anchor” on the seabed – rather than the previous damaging practice of tying up to the hull. Once secured, it is common practice for the divers to descend this line to a convenient depth – and then fin across the short distance to the wreck.
 
 Despite the manner of her sinking, the Thistlegorm is still in remarkable condition. Finning from bow to stern you will find the front section largely intact and upright. The starboard anchor is deployed, some railings are still in place and all the winch houses, winches, blocks, windlasses and other paraphernalia are there to be found.
 
The entrance to No 1 hold is readily identifiable by the two railway water carriers on either side of the deck – with the one on the port side resting precariously on the edge…making this the less-visited of the two openings. Inside, there are Bedford trucks and a number of Motorcycles on the starboard side. Elsewhere the once organised cargo of parts has been turned over for trophies so many times that it looks more like a pile of rubble. However, it’s worth a second look because it obscures some less-visited motor vehicles.
 
Back at deck level, there is a Tender Railway on each side of No 2 Hold beside which are two "torpedo" shaped Paravanes (once used for cutting the cables of submerged mines). Dropping into the hold, there are some very interesting vehicles on the upper level, but below these on the port side, you will discover two large Armoured Cars – custom built on Rolls Royce Chassis. The starboard side of No 2 Hold, however, is where an incredible journey begins.
 
 Swimming gently in the free space near the ceiling, there is plenty of room to explore the rows of trucks, still parked as though they were waiting to be unloaded. Behind each cab, there are Enfield motorcycles, stowed in groups of three on the back of each truck to save space. Shining a good torch here will reveal some wonderful detail of these beautiful old machines. However, it will also highlight the greed of others, for invariably the motorcycles have been pushed over by Divers searching for something to remove and keep. The badges, pedals, twist-grips and tool kits are all gone – and within the lorries and trucks, only a few steering wheels are left. Worse still, in order to get at those steering wheels or perhaps a souvenir from the engine, divers have smashed their way in through the roof or bonnet of each vehicle - thus maximising the damage caused in search of their trophy. For me, this makes it a dive of mixed emotions.
 
 Moving sternward, through the inside of the ship it is possible to pass through into No 3 hold. Here are the small arms - weapons of various calibres in packs of 6 or 8 placed "Butt to Muzzle" and each pack now concreted together as a single entity. Beyond this, is the fuel store - virtually empty after such a long journey. To one side, however, there is a large gap where the Diver is able to exit through the bulkhead which once formed the barrier between No 3 and No 4 Hold.
 
 Emerging into the daylight, the Diver is confronted by the devastation that surrounded the sinking. Ammunition boxes form a large pile of fairly uniform debris - on top of which is an up-turned tracked Bren Carrier. Pointing towards the stern is the broken drive shaft and some 20m further on is the remainder - sticking out of what remains of the stern. Below are a number of large artillery shells, once destined for a British Warship.
 
 The stern itself is canted over at an angle of 45 degrees and is as interesting as any other part of the ship. The two deck-mounted guns are still in place and are best viewed from below - where they make excellent silhouettes against the distant surface. Finning around the aft rails you can venture down to the prop which makes a spectacular photograph with a diver alongside. Looking upwards and forward the damaged decking is all too evident - "peeled" back by the blast and reaching almost to the Bridge. The evenly spaced steel girders which once supported the deck are now on top and who knows what lies trapped below.
 
Look out to sea at this point and you might see the remains of one of the two Railway Engines – once carried on deck and thrown thirty metres from the hull by the blast. Remarkably, each of these sits upright on the seabed. If gas permits, they are worth a visit – although the prevailing current (which generally flows from bow to stern) makes the opposite, starboard, one more achievable.
 
 Last, but not least, there is the Bridge, which although stripped bare long ago, still offers a commanding view of the wreckage.
 
Postscript
 
From a Divers viewpoint, what makes a good shipwreck is largely dependent on the individual. Few, however, would disagree that the Thistlegorm is amongst the very best. In truth she needs a dozen or so carefully planned dives to explore her many different aspects – but even after just one it is easy to see why she was catapulted from obscurity to become the world’s foremost diving attraction virtually overnight. However, she has become a victim of her own status and is in serious decline. Sadly, none of us shall ever see this shipwreck as magnificent as she was on the day she was re-discovered – and how much longer she will last is anybody’s guess…
 
 
 
 
 
 
The Carnatic
 
Location;     Northwest corner of Sha’ab Abu Nuhas Reef
 
Minimum Depth to Wreck;     17m (Starboard side)
 
Maximum Depth to Seabed;     27m (along Mast)
 
Average Visibility;     30-35m
 
 
 
Sha’ab Abu Nuhas is a prime example of a Coral Reef that barely reaches the surface and, from a distance is not easily seen at all. The Reef is located right on the edge of the busy shipping lane called the Straits of Gobal. This is the extreme northwest corner of the Red Sea - where it begins to narrow before becoming the Gulf of Suez. Even today, these are hazardous waters - so it is easy to imagine what they must have been like over 100 years ago.
 
 The Carnatic
 
The Peninsula & Oriental Passenger Steamer "Carnatic" was built by Samuda Bros of London and classified as an "iron framed planked passenger steamer of 1776 tons." Her dimensions were 89.8m x 11.6m with a draught of 7.8m. In addition to square-rigged sails, she was powered by a single 4 cylinder engine which produced 2,442 hp. Launched in December 1862 and registered in March 1863; she sailed for Calcutta on June 27th whereupon she was employed between Suez, Bombay and China. In 1867 she became the proud command of Captain P. B. Jones - one of the ablest officers of the company.
 
By September 1869, the Suez Canal was nearing completion and would be opened within three months. For the moment, however, passengers and cargoes were unloaded at Alexandria - from where they would travel 200 miles overland to Suez, before joining another vessel and resuming their voyage. In this way, the longer and more perilous route around the Cape of Good Hope was avoided.
 
It was during the second week of September that Captain Jones supervised the loading of his ship. Some of his cargo was very valuable and he personally made sure every item was checked and secured. He had 34 passengers, 176 crew and a cargo of cotton bales, copper sheeting, Royal Mail, and £40,000 in currency - destined for the Indian Mint. At 10am on the morning of Sunday 12th September 1869, Captain Jones ordered the mooring lines slipped and the Carnatic sailed for Bombay. She was a sleek vessel with proud lines and, unlike many of the hybrid "sail and steam" ships of the period, this vessel responded well to either form of power - thus giving her a definite advantage when other ships were becalmed. Captain Jones personally negotiated the long narrow confines of the hazardous Gulf of Suez and remained on the bridge to give his personal attention to every detail of navigating his vessel safely.
 
Not trusting his more junior officers, Captain Jones remained on the bridge, supplementing this continual lack of sleep with copious amounts of coffee - just to stay awake. Maintaining a steady speed of 11 knots, the Ashrafi lighthouse was sighted at 11:40pm and by the time the Second Officer came on duty just after midnight, it was already 5 or 6 miles astern - though no bearing was ever taken. The night was clear, with a slight following breeze and a little land haze - common in these parts. More importantly, the headlands and islands through which the Carnatic plotted her course, were all visible. At 1am Shadwan Island was sighted by the Second Officer - dead ahead. The Master altered course to S. 46° true and gradually to S. 51° true. Eighteen minutes later, however, breakers were seen on the starboard bow. The helm was instantly put hard-a-starboard and the engines at full speed astern. It was too late however and the Carnatic struck Sha’ab Abu Nuhas Reef where she became firmly fixed.
 
Not a man to overreact, Jones was most thorough in checking every single aspect of the ship’s condition and was quite satisfied that the pumps could handle the amount of water being taken on. Judging the passengers and crew to be as safe as could be expected, he decided everyone would remain on board. At daybreak on the 13th, Jones assessed the situation once again. The ship was stuck fast on a large Coral Reef and, although she was leaking, she was still in pretty good shape and the pumps were coping. Jones then ordered a large amount of the cotton dumped overboard in order to lighten the vessel in the forlorn hope that she would float off with the tide. There was no panic amongst the passengers although some did ask the Captain for permission to make for Shadwan Island. Jones was well aware of the dangers involved in moving 210 people to a remote island on the far side of a dangerous coral reef in small boats and of the discomfort they would suffer until rescued. For the moment at least, his vessel was relatively sound, they had power and considerable comfort. He also knew that the P & O Liner - Sumatra, was due to pass by at any time, inbound for Suez and he fully expected to be rescued later that day.
 
Meals were served, people walked the decks and, up aloft, a constant lookout was kept for a passing ship. But none came and, as evening fell, a second deputation of passengers approached the Captain with a plea to be allowed to reach Shadwan Island by lifeboat. Again he refused. Totally underestimating the power of a Coral Reef to inflict damage on a steel-hulled vessel, Jones decided all would spend another night on board. Accepting his authority, some of the passengers even dressed for dinner and the waiters served drinks before they all enjoyed a sumptuous evening meal. For some, it would be their last.
 
As the Carnatic continued to pivot on top of the Coral head that held her so firmly in place, the leaks got worse. What went undetected, however, was the slow, irreversible process that was weakening the keel itself as it steadily rocked to and fro in the gentle sea. By now it was only a matter of time.
 
At 2am on the morning of the 14th, the level of water within the ship finally engulfed the boilers and suddenly they were without power and light. Now even more passengers wanted to leave - but still Jones placed his faith in the timely arrival of the Sumatra. By daybreak, however, the sea state had begun to increase and water was rapidly filling the ship. Finally realizing the situation was lost, Jones ordered the lifeboats be made ready. However, it was not until 11am that he allowed the first passengers to begin to disembark. Tragically, at that very moment it became too late for some. In the time-honoured tradition of women and children first, the three ladies and one child on board had just taken their seats in one of the lifeboats when the Carnatic suddenly and without warning broke in half. Thirty four hours on top of a Coral outcrop had proved too much for the gallant little ship and, with her back broken, the aft section sank quickly - taking 5 passengers and 26 crew with it. Instantly, much lighter, the fore section fell over onto its port side as it also began to slip off the Reef - spilling almost everyone into the sea as it did so. With passengers and crew fighting for their very lives amongst masts, spars, rigging and all manner of debris, they were then suddenly engulfed by the returning wave caused by the sinking stern. As freed lifeboats floated off, there were many instances of bravery and brute strength as people forgot their respective positions and worked together for the common purpose of saving themselves and each other.
 
One by one the survivors were first hauled to safety and then taken to a rallying point where other lifeboats congregated together in the shallow water above the Reef. Then it was a matter of collecting anything that might be needed and, with a final scan for survivors, it was time to leave. Shadwan Island, however, was three miles from the far side of the very wide Sha'ab Abu Nuhas Reef. To shorten this journey, each of the seven lifeboats was pulled across the top of the Reef by the men taking it in turns - until, finally, this small, pitiful flotilla was able to row the remaining distance. It was after sunset when they arrived and, once again, they had to negotiate yet more coral reefs before they were safely on dry land.
 
Fortunately, several jettisoned bales of cotton had washed onto the island and being so tightly packed, were still very dry inside. They were actually calico - a form of course muslin material, and provided rudimentary clothing and warmth for the cold night ahead. In fact there was so much dry cotton that a large amount was carried to a high point and set alight. At last the Sumatra was sighted and she quickly responded to the only signal rocket fired. On his return to Suez, Captain Jones was recalled to England to face an official Board of Enquiry.
 
Recovering the Cargo & Currency
 
With a cargo of such great value (the equivalent of several million pounds by today’s standards), Lloyd’s immediately dispatched Captain Henry Grant to take charge of a recovery operation. On arrival in Suez, Grant was informed that the Carnatic had sunk in 40 fathoms (over 70metres!) and almost turned back. Then having second thoughts, he decided the least he could do was take a look. He arrived on the scene on 29th September and immediately chased away some Arab boats. Grant was heartened to find the Carnatic in quite shallow water at the bottom of a Reef with some of her features still visible above the surface. Working from the Salvage vessel "Tor," Grant had only one diver at his disposal - one Stephen Saffrey from Whitstable, but adverse weather conditions delayed the first descent until 15th October.
 
The search began in the Mail Room where a body was first recovered. Mail bags were sent to the surface and pocket watches removed from the safe, but no currency. Next to the "Mail" Room, was also a "Post Office" but access involved removing the large bulkhead which separated the two. This took Saffrey several days but finally, he was through and, on the 24th recovered another 16 mail bags. The first box of bullion was brought to the surface on the 26th and the remainder lifted by November 8th. In the meantime, local Bedouin free Divers had recovered over 700 sheets of fine-grade copper also destined for India’s Mint.
 
Official reports record the entire cargo of currency being recovered and, having been found in a very secure and undisturbed part of the ship, this seems likely to be true. That said, stories of "missing treasure" still appear from time to time.
 
Diving the Carnatic
 
The most incredible part of this entire shipwreck is that, whilst the ship went to the bottom in two separate halves, those two halves then fell together on the seabed - just as they might have done had the ship gone down as one piece…
 
Today the Carnatic is found at the base of the Reef and lies parallel to it. She is on her port side with the bows facing east. There are three distinct elements to this dive; the fore and aft sections are still largely intact and are joined together by the most damaged area where the ship was broken and the engine room was located. It is 25-27m to the seabed and 18-20m to the upper (starboard) side throughout the dive. The wooden superstructure and planking has long-since rotted away - leaving a steel hull held together by iron supports and cross-members. With the decking gone, Divers are able to explore down to two deck levels within the wreck itself.
 
At the Bows is the large copper ring that once held the bowsprit. This lies just behind the curved metal bowsprit support - underneath which was once the figurehead. When viewed from ahead, it is easy even today to see the Carnatic’s fine, sleek lines. From the bows the ship gently widens to the main body where, on both sides, lifeboat davits are found and all swung out. From here the Diver can enter the vessel and swim between the iron supports - a fascinating encounter with a vessel built in 1862!
 
Emerging from the forward section, the Diver then encounters the most severely damaged part of the wreck. Although it is really a pile of scrap metal, it does provide those with technical knowledge (or imagination…) plenty of scope for investigation - after all, there is a very large 4 cylinder engine still in there - somewhere.
 
For most Divers, the stern is the most exciting and interesting part of the entire wreck. Similar to the bows, lifeboat davits are found on both sides and the Diver is able to swim into the wreck down to two levels. Deep inside there are still some very old barrels and some have speculated quite what it was that they once contained which proved to be such a fine wood preservative - Brandy perhaps?
 
To discover the finest aspect of the entire vessel, however, the Diver must exit the wreck and swim round to the stern. This is a finely moulded structure with a single row of seven square windows facing aft. It really is reminiscent of something from Nelson’s day - and provides a fascinating insight into how traditional styles of building wooden ships were adapted for steel construction. Below the windows, the stern curves gently downwards and inwards to reveal a magnificent rudder and the one feature that certainly was never a part of that earlier era - a large three-bladed propeller.
 
After such a long time underwater, it is fairly safe to assume the Carnatic will remain pretty much as she is for the foreseeable future. She is well colonised by coral, soft corals and her own indigenous population of Reef Fishes which include Grouper and Lionfish. Altogether, this is probably one of the finest examples of a ship of her time to be found underwater anywhere in the world - and for that alone she is well worth the visit. Spare a thought though - for those who lost their lives.
 
Postscript
 
The resultant Board of Trade enquiry described the Carnatic as a "fully equipped and well found ship" and Captain Jones as "a skilful and experienced officer." With respect to the stranding of the ship, however, they stated "it appears there was every condition as regards ship, weather and light to ensure a safe voyage and there was needed only proper care. This was not done, and hence the disaster."
 
Captain Jones chose to blame unusually strong currents for driving him off course. However the Court felt that he should have taken a bearing from Ashrafi Lighthouse to be sure of his position and decided that the loss of the vessel was "due to a grave default of the Master." They suspended his license for 9 months.
 
But, on the matter of protection of the passengers and crew after the floundering of the ship, all members of the Court were satisfied "that when it was determined to leave the ship the Master and his officers in their exertions to secure the safety of the passengers, did all that experienced and brave men could do."
 
Captain Philip Burton Jones was born in Liverpool in 1830. He gained his Master’s Certificate in London in 1858 – aged just 28. In previous commands he earned a reputation as a first class Master Mariner. After the loss of the Carnatic however, he never went to sea again…
 
 
 
 
 
 
The Giannis D
 
Location;     Northwest corner of Sha’ab Abu Nuhas Reef
 
Minimum Depth to Wreck;     6m (above Bridge)
 
Maximum Depth to Seabed;     27m (at Stern)
 
Average Visibility;     30-35m
 
The Ship
 
Launched in 1969 as the Shoyo Maru and built by the Kuryshima Dock Company of Imabari, Japan. A "General Cargo Vessel" of 2,932 gross tonnes, she possessed two cargo holds forward with Bridge and Engine Room at the Stern. Her dimensions were 99.5m x 16m with a draught 6.53m. Her machinery was built by Akasaka Tekkosho KK of Yaizu, Japan and comprised a 6 cylinder diesel engine capable of producing 3,000 BHP and a top speed of 12 knots.
 
She sailed under her original name until 1975 at which time she was sold and re-named the Markos. Interestingly, that name is still discernible on the vessel’s hull and there are those who insist on calling her by the misnomer "Markos D". In 1980, the ship was then sold again to the Dumarc Shipping and Trading Corporation of Piraeus, Greece. This was when she was given the name Giannis D and a large capital "D" was emblazoned onto her funnel.
 
 In April 1983, the Giannis D was loaded with sawn softwood at the Croatian port of Rijeka. Part of this cargo was destined for the Saudi Arabian Port of Jeddah, with the remainder to be off-loaded at Hodeidah on the coast of Yemen.
 
It was a beautiful spring morning as the ship’s Captain ordered the mooring lines slipped and guided his charge out into the Adriatic. The journey down through the azure-blue waters of the Adriatic and then across the Mediterranean Sea were uneventful - with the ship in the hands of the Officer of the Watch. They made good time to Port Said where the Captain took charge of his vessel once again. Once through the Suez Canal, the Giannis D was faced with navigating the Gulf of Suez - a long narrow stretch of water festooned with small islands and Coral Reefs. Whatever their size, at least the islands were visible but Coral Reefs are very different and lurk menacingly just below the surface like an unseen enemy waiting to rip the hull from any careless vessel - as many a Captain has discovered to his cost.
 
The Master of the Giannis D knew these waters well and was not too proud to trust his more junior officers with the important task of navigation. Setting his usual course, he checked every element of the ship’s position and made sure his orders were fully understood before leaving the bridge. Eventually, they were approaching the Straits of Gobal and, as the Sinai coast began to fall away to the east and the Egyptian mainland even further away to the west, the Captain was satisfied that the more dangerous stretches of water had been safely negotiated once again and finally he could relax.
 
With Jeddah another 600 miles further south and, thinking that only the open Red Sea was between him and his destination, the Captain relaxed in his cabin and was soon fast asleep. He had, however, not reckoned with Abu Nuhas and it was not long before he was very rudely awoken by an event that would signal the end of his much loved ship. With the engines set at "Full Speed Ahead" the Giannis D was seen to suddenly wander from her allotted course and drive hard onto the North West corner of Abu Nuhas Reef. The date was April 19th 1983.
 
 Lloyd’s List of April 22nd 1983, reported:
 
"GIANNIS D (Greek). London Apr 21 - Information received, dated Apr 20, states: MV Giannis D, (from Rijeka), cargo sawn softwood for discharge at Jeddah and Hodeidah, grounded at Sha'ab Abu Nuhas last night. Crew abandoned vessel, which is listing, and were taken by an Egyptian tug to Santa Fe platform and then by helicopter to Ras Shoke. Owners signed Lloyd’s standard form with salvage tug Salvanguard, which is proceeding to the vessel."
 
 By the time this was being read in London, however, the Giannis D had been declared a total loss.
 
 Diving the Giannis D
 
The "Giannis D" is now found in three separate sections - Bows, Amidships and Stern lying more or less parallel to the Reef. Whilst each of these will provide the Diver with a most rewarding dive, most Divers tend to head straight for the stern where they will find a very dramatic and exciting structure.
 
 Such is the power of nature to reduce a man-made object to scrap metal that the stern looks as though it has been cleanly cut from the remainder of the ship. Almost like an island in the sand, this part of the wreck sits proudly all by itself, listing to port at an angle of about 45 degrees. The deepest part is the port companionway which is almost resting on the seabed. Above this, a number of davits and other fittings are found hanging out from the wreck. There are Crown of Thorns Starfish here - so watch where you put your hands. At 23-24m this is the deepest part of the wreck and immediately above, parts of the superstructure reach to within 4 metres of the surface. On the starboard side, the Diver will find a ladder still hanging down the side of the vessel. This was used by the crew as they abandoned ship. Immediately below is the propeller which is partially buried in the sand. Above and just in front of the huge rounded stern is the starboard-side companionway and stretching above this the Diver will find raised decks and the Funnel (with the "D" clearly visible). There is easy access to the engine room, which was never salvaged, and offers a very exciting interlude for those who prefer to venture deep inside.
 
The leading edge of this section is, of course, dominated by the Bridge. This is a large, and relatively shallow, open "room" with plenty of light and a number of entry and exit points providing excellent conditions for those wishing to enter a wreck for the very first time. Immediately in front of the bridge are a number of cargo winches below a very large A-Frame.
 
 Travelling eastwards - parallel to the Reef which is over to the right, the Diver will now pass over the remains of No 2 Hold before arriving at the section that once separated the two cargo holds. Part of a companionway is uppermost with mast and booms having fallen across the seabed. Continuing in the same direction, the Diver now passes over the remains of No 1 Hold and a few well-rotted remnants of the cargo of softwood before arriving at the Bows. These are a completely separate dive and one that is often overlooked.
 
The Bows rest perfectly on their port side with the decks facing away from the Reef. Once again, they look as though they were separated from the remainder of the ship by an acetylene torch. Being exactly on their side, however, means that the forward main mast is found stretching out directly above and parallel to the sand - seemingly defying all the known laws of gravity. Many hard and soft corals have begun to colonise this part of the wreck and numerous Reef Fishes have crossed over from the adjacent Reef to set up home. A very large Napoleon Wrasse is often encountered here. On the foc’sle, the diver will find the windlass and a number of cargo winches - all occupying their rightful place. There is also a small entrance into the tight confines of the forward anchor locker - but with so much chain still inside, there is nothing to recommend the experience.
 
 Overall the Giannis D is an excellent dive - and one that is much enjoyed by every grade of Diver. Why she should have suddenly veered from her course will probably never be known. Thankfully, there were no casualties and, in this case, Lloyd’s total loss is definitely Diving’s gain.
 
 
 
Scapa Flow
19/2/2011 2:44:43 PM
SCAPA FLOW -A BRIEF HISTORY
By Ron Morris
 
Introduction

Scapa Flow is a natural harbour which has been used over many centuries, from the Viking fleet of King Haokon in the 13th Century, to the present day. It formed an important northern base for the British fleets in both world wars.

World War I

During the First World War, the British Grand Fleet used Scapa Flow as a northern base. After a German U-Boat managed to enter the Flow early in the war, merchant ships were sent as block ships in strategic places and anti-submarine nets were put in place. From this base, vessels from the fleet made sweeps in search of the enemy.

In 1916, the British Grand Fleet left Scapa Flow to fight in the Battle of Jutland. 24 battleships and 3 battle cruisers, plus destroyers and scouting cruisers set out under the command of Admiral Sir John Jellicoe. They met the German High Seas Fleet in battle. There was much damage wrought, with many thousands of men losing their lives, but both sides believed they had won. However, after the battle, the Kaiser's fleet never went to sea again.

In June 1916, Lord Kitchener, the Minister of War, arrived in Scapa Flow to visit Admiral Jellicoe and hear his account of the Battle of Jutland; Kitchener left on board the Hampshire, and sailed up the west coast of Orkney. Near Birsay, the Hampshire struck a mine, and only 12 men out of 665 survived. In 1926, money was raised by public subscription to erect the Kitchener Memorial at Marwick Head near Birsay.

After the armistice, seventy-four ships of the German High Seas Fleet were ordered into Scapa Flow to be interned. They arrived in November 1918, and stayed there for 10 months. During this time, they became a tourist attraction, with organised boat trips available for adults and children alike.

In reality though, the internment was a serious incident – particularly for the skeleton crew of German sailors left aboard each ship. By June 1919, Rear Admiral von Reuter, the German Officer in command at Scapa Flow, knew that Germany would have to accept surrender terms – and it was only too clear that the fleet would become a valuable bargaining tool in the negotiations. Faced with handing over his ships to the enemy – he made a difficult decision. When the main part of the British Fleet left the flow for exercises he gave the order for the entire German fleet to be scuttled…

The first of the German Fleet to sink was the Friedrich der Grosse - the flagship of the Jutland Fleet. This battleship sank beneath the surface at 12:16pm. As the islanders and remaining British navy personnel watched – the rest began, slowly, to follow her to the depths.

In a flurry of activity, the British managed to save a few of the German ships by towing them towards shore where they settled in the shallow water. Messages were hastily sent to the departed fleet, demanding that they return and offer assistance. This they did, but it was hard to avoid the inevitable.

At 5pm on 21 June 1919, the last ship, the Hindenberg, went under. By this time the surface of Scapa Flow was covered in oil and debris. The environmental damage caused by the scuttling was considerable.

On June 21st 1919, a party of schoolchildren from the town of Stromness were being taken on a trip around Scapa Flow to view the German Fleet. Little did they know when they left home that day what they were to witness.

The following is a piece written by one of the children, James Taylor, one of the pupils who witnessed the scuttling:

"On Saturday June 21st 1919, I rose very early, as it would never do to be late for a school treat which was to take the form of a cruise on the Flying Kestrel to visit the surrendered German Fleet. The though of sailing up to them made us boys almost sick with excitement!

At long last we came face to face with the Fleet. Their decks were lined with German sailors who....did not seem too pleased to see us. Suddenly without any warning and almost simultaneously these huge vessels began to list over to port or starboard; some heeled over and plunged headlong, their sterns lifted high out of the water.

Out of the vents rushed steam and oil and air with a dreadful roaring hiss.

And as we watched, awestruck and silent, the sea became littered for miles round with boats and hammocks, lifebelts and chests....and among it all hundreds of men struggling for their lives.

As we drew away from this nightmare scene we watched the last great battleship slide down with keel upturned like some monstrous whale."

Most of the scuttled fleet did not stay where they had sunk. Those that were beached were removed almost immediately. In the 1920s, the firm Cox & Douglas began salvage operations, lifting many of the ships. This salvage continued until the advent of the Second World War, and only eight of the seventy four scuttled ships now remain at the bottom of the Flow.


World War II

During World War II, the Home Fleet was once more based at Scapa Flow, from where it helped to protect the Arctic Convoys to Murmansk.

In October, 1939, only a month after war had been declared, an assault on Scapa Flow was planned using the U-Boat U-47, commanded by Lieutenant Günther Prien. On the night of October 13th, the U-Boat managed to pass between the Orkney Mainland and Lamb Holm into Scapa Flow, between two northerly block ships. Just after midnight HMS Royal Oak was sighted in Scapa Bay. Torpedoes were fired, and a hole 30 feet in diameter was made in the hull, and she capsized. Of the crew of 1400 men, 833 lost their lives and to this day they remain entombed in the wreckage.

HMS Royal Oak is a protected war grave, and each year on the anniversary of the sinking, there are memorial services.

Following this event, Scapa Flow became heavily defended with anti-aircraft batteries, minefields and further block ships. In 1940, Winston Churchill gave orders that the defences on the eastern side of Scapa Flow were to be improved by setting concrete blocks between islands to make causeways. These four causeways are known as the Churchill Barriers

Italian POWs were used to build the barriers. They were unhappy, declaring this to be war work, and thus against the Geneva Convention, but were persuaded that the primary purpose of the barriers was to provide an easy means of communication by road for the people living in the south parishes. To their credit, the Italian prisoners also built a beautiful Chapel on Lamb Holm for their worship, which is still open to visitors.

Today, the flow is a haven for wreck divers – with many thousands making the pilgrimage each year. More than twenty dive boats, of varying sizes, ply their trade there and the locals offer a welcome to all. The Scapa Flow Visitor Centre is housed in the former oil pumping station at the Lyness Naval Base on Hoy. As well as telling the history of the Flow, it houses many exhibits from both World Wars.
Ron.
 
Dark Descent
19/2/2011 2:42:41 PM
A review of Dark Descent
by Barbara Hately-Broad
 
On Thursday May 28, 1914 The Empress of Ireland, a passenger liner built and operated by the Canadian Pacific Railway, left Quebec carrying 1,060 passengers and 420 crew bound for Liverpool. Within 48 hours she was lying at the bottom of the St Lawrence Seaway having suffered a fatal collision with the steam-powered collier Storstad. Although the collision resulted in the loss of more passenger lives than the loss of the Titanic, the Empress of Ireland remains, in the words of Clive Cussler, ‘the ship the world forgot’.

Kevin McMurray’s book charts the sinking of the Empress and, with a detour into the general history of SCUBA diving, the history of diving on the wreck itself . Although dived by some of the most famous names in wreck diving of the later part of the 20th century, including Gary Gentile, Bill Nagel and Dan Crowell, the wreck has never attained the glamour associated with other historic wrecks. Partly, at least, this may be due to the location – although lying in less than 50m, the St Lawrence Seaway is notorious for its strong currents, icy waters and mud bottom with poor visibility.

Overall this book follows a general pattern of wreck diving histories – often focusing on fatalities and near-misses. However, McMurray’s book also shows that politics and personalities can also play a part in shaping the popularity of diving any given wreck as a number of local divers clearly felt that the Empress was their preserve and made it clear that they didn’t want any ‘hot-shot’ American divers encroaching on their territory. Gary Gentile, trying to arrange a charter boat in the early 80s was told that diving on the wreck was not permitted whilst the local dive shop told Bill Nagel that they only took local divers out to the wreck.

In addition the book provides an interesting insight into historical aspects of questions about the fate of artifacts recovered from wrecks and who they should belong that should be of interest to everyone who dives on wrecks to the present day. In the case of the Empress much of this debate centered around Philippe Beaudry, a major player in the impressive sounding but actually unofficial ‘Empress of Ireland Historical Association’ who, himself, had been removing artifacts from the wreck but nevertheless became outraged that part of Canada’s heritage were being ‘spirited back to the States’. Beaudry even went as far as alerting the Royal Canadian Mounted Police and the border patrols to stop American divers suspected of removing artifacts before they crossed the border.

Unlike some other histories, this book didn’t leave me feeling that this was a wreck I’d like to see for myself. I know my limitations and icy, dark waters with poor visibility and vicious currents don’t really go with diving for pleasure in my book ..... but I’m pleased that there are people who do dive in these conditions so that the stories of these wrecks are kept alive for those of us who prefer to dive them from an armchair.

McMurray, Kevin F., (2005)
Dark Descent: Diving and the Deadly Allure of the Empress of Ireland.
McGraw-Hill. ISBN 0-07-145630-9.
 
Looking after your kit
19/2/2011 2:37:55 PM
Bits and Pieces
by Ron Morris
 
Oops…dropped another one. 
“Leave it there” says his master’s voice. “Remember the rules – we never pick an o-ring off the floor and use it…”
 I listen – and try to get my head around the collection of plastic, rubber and metal spread out on the bench in front of me. Once upon a time it was a regulator. Once upon a time it was my regulator… You know that itchy feeling you get when you start to suspect you’ve bitten off more than you can chew? Enough said…
“There’s nothing to it really” re-assures Mike. “It’s just a diaphragm, a lever and a little piston. You suck here, which tugs on the diaphragm. As it flexes, it acts on this little lever – which opens this valve and air comes in. Exhale and that path closes – venting the stale air out here. See how dirt in there can obstruct that mechanism? That’s where breathing difficulties and free flows start”.
Of course he’s not wrong. As I visualise the movements, the position of each part becomes clear. Not quite obvious – but not far off either. In truth it’s something of a revelation – for I begin to understand how properly cleaning and maintaining your kit might actually save your life. Yes, I know - everybody’s heard it a hundred times before. But it’s a little different looking at the proof!
Two hours previously, we were sat in a classroom and all this was theory. Mike had begun with the words “this will not make you a service engineer!” – and then promptly launched into a succession of simple diagrams explaining the workings of regulators, the use and dependability of O-rings, and the best way to assemble yourself a field toolkit -  so that you can keep diving when others might have to call it a day.
Along the way there are questions and answers (some of them surprising); friendly warnings - and a few horror stories to put it all in perspective. Mike is clearly in his element here and the depth of knowledge on offer is considerable. As prior “mysteries” start to unfold in simple, plain English you graduate from the bewildered to “the informed.” By the time tea break arrives, you’re starting to appreciate the value of becoming a PADI Equipment Specialist. 
With cups in hand we adjourn the workshop and spend a little time just looking around. We listen while Mike impresses upon us the need for safety and organisation of the workspace. We learn about tools – how there’s a right one and a wrong one for every job. We’re taught cleanliness (and how it’s a tool in itself) and are respectfully introduced to a couple of essential, but potentially dangerous items; the air gun and the ultrasonic bath.
 Work begins casually with the stripping, cleaning and re-assembly of your own mask. It’s a simple enough task, although the amount of algae and fungus we clean out forever changes our perspective on eye infections. Then we move on to knives; we look at appropriate placement, proper use and of course caring for the metal. Surprisingly Mike asks the question; “do you really need a knife?” and out of the discussion comes yet more understanding…
Things get more interesting as we move on to hoses and O-Rings. Safety considerations come into play as we examine construction and application. We learn how and where to look for leaks, and set up our own practical demonstration of the importance of the simple o-ring seal. In the process we learn the answer to the question “how tight is tight enough?”
 A little bit of fear sets in when I have to strip my own regulator second stage – but we’ve been there and you already know the outcome. Another example of Ron’s lack of bottle (just thought I’d say it first…).
By good fortune, I’ve brought along a spare 1st stage which is overdue for a service. As a favour to the curious, Mike strips that down too. In trained hands it takes all of three minutes and is a nice exercise in revealing the simplicity of good engineering Poseidon-style. Seeing first-hand the practical application of the theory is somehow re-assuring. It’s also worth watching the smile this sort of thing puts on Mike’s face…
We end the morning session looking in detail at submersible pressure gauges – how similar they all are, and how carrying a simple £3 spare part can save you untold grief and loss of air.
Lunch is a grand affair, and I suspect rather more than the fee really allows. Welcome to the Atkinson kitchen; those of you who’ve been there before know exactly what I mean.
Thanks very much Jill…
With heavy bellies we move into the afternoon session. At this point, Mike makes a confession; servicing BCD’s is a pain, and try as he might, he can’t make a decent profit on it. So, we delve into the workings of a BCD (or wing – as before you bring your own). It’s all straightforward, valuable stuff; we remove, clean and inspect the dump valves, disinfect the bladder, and learn a couple of tricks which ease the wear and tear on power inflators. I have to confess that Mike’s correct – none of this is rocket science. But, that’s all the more reason for learning how to do it yourself.
As something of a middle eight, we return to hoses – this time the jacket and dry-suit variety. We look at the peculiarities of low pressure connectors and take a trip down memory lane to the days when we all had pushbikes. Did you know you’re inflator hoses use a type of Schrader tyre valve?
Dry suit maintenance is mostly about TLC. If you don’t clean it, you will never inspect it – and thus any wear and tear will take you by surprise. Of course surprises mean lost dives, so we pay attention even at this late point of the day. It’s not good to learn that we’ve never actually cleaned and lubricated our zips properly (thanks in part to the poor instructions supplied with the suit). Nor am I impressed to find that mine is actually damaged - though serviceable for the moment. And I could do without the reminder that rolling up my suit isn’t doing it any favours. But, at least my soapy water technique for finding leaks meets with approval.
Repairing leaks is both good and bad news – insofar as you can be taught to do the little ones yourself, but you must pay Jill for the bigger ones. Some, sadly, are non-repairable - but then we knew that (second hand dry-suit anybody… one careful lady owner… all offers considered…)
We end the afternoon pretty much where we began it – with inlet and dump valves. By now it’s one of those matter-of-fact chats. Things first learned only a few hours ago are starting to feel like the obvious and it’s clear that Mike has succeeded in making us aware of things we should never have ignored.
So – is it PADI hype, or was it really worth it? Well, unless you’ve been reading another article, you should already have worked out my answer to that one… I certainly got all I was expecting, and more besides.
There is however, just one downside… Armed with the list – I now have to buy and equip a proper toolkit.
Jill has started selling me things already…
Cheaper hobby anybody…?
 Thanks for reading.
Ron.
Seasearch
19/2/2011 2:11:13 PM
An introduction to conservation
by
Mike Atkinson
 
Ever wanted to help the local environment, or more correctly the north east coast?
Seasearch organise courses in identifying and logging the life we see when diving.
Seasearch is a project for recreational divers who want to do their bit for the marine environment by collecting information about the marine habitats, plants and animals that only divers see.
 
 Qualifications.
To take part in dives organized by Seasearch coordinators, they require divers to be at least PADI Advanced, BSAC Sport diver or equivalent with a minimum of 20 sea dives of which 10 must be in cold water (ideally British). For some trips divers need to be more experienced and this is clearly stated on the dive trip details.
Divers should also have an in date medical (self cert is acceptable) and must carry third party liability insurance (club divers usually have this through their club memberships, other divers can obtain it through organisations such as DAN). 
Courses
Many divers start by attending a Seasearch course. The entry level is a one day Observer course which costs about £40 and includes marine life classification, habitat types, recording techniques, identification aids, simulated video dives and much more, ideally followed by a day diving to put it all into practice.
Divers need to complete 5 Observer recording forms and have them signed off by a tutor to gain their Observer qualification.
Observer courses are run several times during the year at various locations, usually as required. The course can be run specifically for a club or group if there are enough people (minimum 10) or individuals can join one of the timetabled courses.
For those with some experience they run a Surveyor course which is a two day course with a dive on the second day. This trains you to complete the more comprehensive Survey form.
 
Club Info Sessions
One of the Seasearch team would love to come and talk your club or group about Seasearch. There is no charge for this but as Seasearch runs on a very limited budget a contribution towards travel helps.
Give them a call or visit their website for more information.
www.seasearch.co.uk

Mike

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