1111111P www.mcdoa.org.uk oft-$.71-011 C=----7.---- j_._ ---iogreri, '17,01imoimmoiniii111111111111111111111111111111111111111110011111111111111111111111Milionollisidtml.„.mi :; L .,-4 t immomi. —do Three from One 4000 pi* Siebe Gorman present a new air compressor and cylinder charging _ ,......... decanting set, with an integrated = .......,.. control panel, which can be used for ,, three distinct operations:— .4 To charge large high pressure air if,... storage cylinders to 40001b./sq.in. -.7 To decant air from storage cylinders into breathing apparatus or aqualung cylinders. To charge breathing apparatus cylin- ders direct from the compressor. filter and control panel is mounted in a tubular steel carrying frame null Neptune 4000 weighs approximately 400 lb. It cue be Siebe Gorman's new high pressure used independently or incorporated compressor set is designed to provide in a static installation. a versatile unit for charging breathing apparatus or aqualung cylinders with • clean, dry air to pressures between "Reclaim" 1800 and 4000 p.s.i. Driven by either a NIAN g!O , ".P 4 stroke petrol engine or electric 01 I NGI ANI rri III„ O For further information, pleaso write to motor, the air-cooled compressor has """""""111111MIMINI11111111111111111!!111""""""119111111111111101110010111111111111111im" an output of 4.5 cu. ft. of nominal free Siebe Gorman & Co. Ltd., Neptune Works, Davis Road, air per minute. The complete appara- Chessington, Surrey. tus, consisting of motor, compressor, Telephone: Lower Hook 6171/8 Printed by Coast)), & Co. Ltd., St. James's Road, Southsen, 1111111, Cs, 1.1 M C VCRAIAM 21. www.mcdoa.org.uk We specialise in EVERYTHING FOR THE UNDERWATER SPORTSMAN including the latest designs and all the better makes of LUNGS DIVING SUITS SWIMMING GEAR & EQUIPMENT Stainless steel Rolex Oyster. £37. H . See R nt your Roles. 'nitwit.. 1 //Ow YOU WOULD BE PROUD TO WEAR THIS ROLEX OYSTER 1111 11()LEX OYSTEit 1.1 II ‘v,11.1, ,. hh II Ali ,. iti iii 1, hi WI)Iliti110111.1111till1()Wii li 1. ,,,, ,,,, tol . , 11.11 , 1,“.1 ,,,.I ,htipi..,1 li CIVIC P4 IHIVI ', ‘v.11. - iiii , .. , 1 1 I i 11 , , III il, 11 (N,111111,11)I \ ,.. i,$ ,I. II , . I. .11,1 May we send you our VIII ill'illiill I, ,,,,II,,,. it HI I 11 1 i 11 1111Ili ,1 i.1 I. M.I , 11 1 1 •%viirt NEW LIST and 111 ,. I • II folder of illustrated leaflets? ,I INIOUlt, Phe Oyster IN the 11. 1 , . 1,, 1 11111 111.1 1, t h only willeh letth the RX1%, FREE —of course 11 11 111,1 111 111111, 111,1 1 11 11 ,1011110 edeettee serew•down Winding 111. 11111 1 1111 1,1 11. 01. 10, 1114111u Mahon that gives DouniAt proteetIon where it Is most 111, 1111 1 I, .11i 111.'111 II • needed, helpstnahe the Oyster Nat finest waterproof watch. ROLEX 126 HANWORTH ROAD OYSTER The official watch for Royal Navy Divers HOUNSLOW, MIDDX. I ROLEX WATCH COMPANY LI MITED(Pounderi H. Wilsdorf.) I GREEN STREET, MAYFAIR, LONDON,W.l: Tel. HOUnslow 6722 'PAY-AS-YOU-DIVE' DEFERRED TERMS ARRANGED www.mcdoa.org.uk www.mcdoa.org.uk Contents R.N. Diving Magazine PAGE EDITORIAL STAFF EDITORIAL .. 3 Editor . P.O. R. W. LLOYD LETTERS TO THE EDITOR .. 4 Cartoonist .. .. P.O. M. J. BRASSINGTON `EARS' AND THEIR AFTER-EFFECTS 5 Secretary and Treasurer .. Lt. E. W. J. SMITH, R.N. Photographic Adviser Mr. R. FORDHAM MED. FLEET C.D.T. I I `LEARNING THE ROPES 13 Vol. 10 Winter 1963 No. 3 THE FAR EAST TEAM 18 COMMENTS ON RECENT DIVING ACCIDENTS 19 Editorial KIWI NEWS LETTER 23 OST Shallow-water Divers Mmust consider changing over THE DRAFTING OF DIVERS 26 to Clearance Diver at some fine or other, because first, they IS CLEARANCE DIVER FOR You .. 31 are keen on diving and second the advantages over normal 'General PROMOTIONS AND ADVANCEMENTS 37 Service' are obvious. But what does the average HISTORY IN THE MAKING 39 S.W.D. know of the C.D. branch or more important the C.D. Awmu) 40 (i11)1((iF course ? The answer is 'virtually nothing!' and what he does know NI ws FR OM 'It H'I.A1M' 41 is almost certainly exaggerated. )1TPWAIlle SPOIR IN 42 For this reason our article 'Is Clearance Diver for you', has loom Dimon1111 ( 'DKIfslAND MIMI, AND MINI, DINNINAt 45 been written with the intention of providing S.W.D's with the facts, ANIII i (Ii IONIAN Willi f I .'itioo 011 I I 1) 47 so that they can judge for them- selves if they are likely to success- INII*1(111111ADVI: I WI 47 fully complete the course, at the same time those that do come to So III IINII 1111M11 AND MINI I )1N1,11NAI, IINII 49 H.M.S. Vernon will know what to expect! H.M,S, 'ARK liooYAI.' 4)1VIN(1 SAFARI' 51 We have a fair representation of T111' ( 'ASF OF 1111, PAR11011.11) DIVER 55 'Team' news. Perhaps I can hope that teams not represented in this edition will feature in the next ? Postal Address: Which would be an ideal arrangement, giving eight months for a team to write about. THE EDITOR, R.N. Diving Magazine, The efforts of those who have contributed, particularly the 'magazine H.M.S. 'VERNON', PORTSMOUTH, HANTS, regulars', is as usual very much appreciated. Many thanks also to the ENGLAND instructors at the 'Schools' who extract two shillings from their eager volun- teer readers, it's very important that we get the largest possible sale in order to boast the best branch magazine in the service, which it is. www.mcdoa.org.uk 3 www.mcdoa.org.uk Straight from the "horse's mouth" at Haslemere (Ernie has many forms), comes a report on the present state of the branch and its effect on drafting, `Ears' and their after-effects which would indicate more sea-time for C.D's. by SURGEON LIEUTENANT-COMMANDER R. R. A. COLES, R.N. Finally no editorial would be complete without the traditional plea for NE of the commonest causes of material, especially for technical items which are of the widest interest. influenza, the cause and prevention failure to pass the initial diving of 'reverse ear', and the nature of Contributions should arrive by the first week in March. EDITOR. Omedical examination, or to com- the disorders of the ear caused by plete the first diving course, is barotrauma (injury due to pressure, difficulty in clearing the ears. Later, and called 'ears' when affecting this after training, temporary unfitness organ) or by decompression sickness. Letters to the Editor for diving can, more often than not, (`the bends'). be related to the same difficulty. Sim- The last of the studies named: Lt.-Cdr. McLanachan (Mr. Mac. was fractured, but asked that the ilar considerations, though to a lesser Retired). task might be left until Yarmouth's above was carried out at H.M.S. degree, affect the selection and fitness Vernon during 1959-60 by Dr. J. J. impending return to Portsmouth after of submariners and aviators. Dear Editor, Knight, of the Medical Research. the exercise. In fact Yarmouth did It is not surprising, therefore, that Please don't think that in my not return, her destination being Council, and by myself. It is my a considerable amount of naval retirement I have changed from a changed to Londonderry. object now to give an account of our care-free C.D. officer into a crotchety medical research has been directed results and their significance. But old basket who writes to the Times Hoping these few lines will help to towards the effects of pressure on the first it is necessary to explain the every time he reads something which soothe the righteous wrath of the ears and nose. In fact, during recent theoretical consideration which pre- upsets his equilibrium. However my Pompey team. years studies have been made on ceded and warranted the investi- attention has been called to an Yours Aye, such subjects as the action of the gation. In outlining these, a recapit- article in the 'Summer' issue of the MAC. Eustachian tube (see Figure), means ulation of the basic anatomy and magazine by one 'Buster' from the Dear Editor, of prevention and cure of the tem- physiology of the ear can hardly be Port Diving unit Londonderry. In porary obstruction of this tube which avoided, but most of it can be In the last edition (vol. 10, No. 2) is frequently associated with colds or appreciated from study of the figure. his article 'Buster' states quite in- I noticed that there were live articles correctly that the Pompey Diving from various working teams, surely team 'TURNED DOWN' a diving job idler reading the magazine the , HEAD; ABSOLUTE ONESSUBE (P) ,IT5'.TIWES t +""p + . • . on H.M.S. Yarmouth! He thereby teams who did not contribute will sullies the fair name of as line a have a touch of remorse ? bunch of divers as ever donned a nose clip and I write to defend their Here we are a Diving Magazine honour. of 56 pages and only seven of them MIDDLE EAR covered by articles from the Naval AND SMALL SOUND- The facts are as follows. A (Ionic SURROUNDING CONDUCTINO BONES Diving Teams for whom it is in- WATER ; (THE OSSICLES) exchange was carried oui on P. p. tended to serve. I .. • • ' • . • .'. .. .• . • •• • Yarmouth at the end of January 1963 DID FILLED CAVITIES AND CENTRAL Might I add one thing, it's not up . BONY COLUMN OF THE COCHLEA by the Pompey team who laboured EXTERNAL EAR (INTERNAL EAR). HERE THE SOUND night and day, so that the ship might to the Boss to do all the writing, WAVES ME CONVERTED INTO sail in time for an important exercise.