Sorry to hijack this tread but I have had this from TNA and never knew if it would ever be of use or of interest to any one. Cheers Kevin Data from TNA LVT’s, DUKW’s, Storm Boats, Class 9 Rafts, Class 9 FSE Bridges, Class 50/60 Rafts, CDL Tanks, DD Tanks LVT’s II and IV The LVT Regt has been re-organised for this operation and the new squadron, which lifts an assault battalion, has 38 LVT’s. Two on Squadron Headquarters which are NOT. available for loading. Six troops of six. Four troops all LVT IV’s and two troops each three LVT II and three LVT IV. The LVT II has no door and so can only carry personnel normally. Any stores carried have to be loaded and un-loaded from a deep well. It can however, carry a 17 pdr on top and some personnel in the well by a modification which can be put in or removed within half an hour in the LVT Collecting Area. The LVT IV has a door which can be lowered like an LCA and can take the following vehicles and NO OTHERS:- Jeep, Weasel, Dingo, A/B Bulldozer, Carrier also a 6 pdr It cannot take a Windsor Anti-Tank tower. Carriers can be taken with a reasonable load. Loading capacity – 4 tons Max speed, land 30 mph Max speed, water 5.9 mph Max gradient 29 degrees DUKW’s 1. Now all very old and very weak mechanically. 2. Therefore being reserved only for a Q Lift and perhaps for one or two odd jobs for CAGRE and CSO. 3. Need a good ferry hard on both banks to enable them to get out of the water at all. Civilian or Boche ferry sites very useful. 4. Successful hards have been built of 5 to 6 widths of Summerfield Track reaching down into the wateruntil the latter is about 2ft 6 ins deep. The width is necessary because of the current while the extension into the water allows the front wheels to grip as soon as they ground. 5. Very good for evacuating casualties as they give a much smoother ride than the LVT’s but the latter are, of course, the only craft which will be able to function in the initial stages. Storm Boats 1. Outboard engines very temperamental and each one has its own individual characteristics. Essential therefore that the man who is going to work one on the day must practice on that boat for a week beforehand. 2. Need 3 feet water under keel before starting engine. Common habit is to start them too near the bank so as to be sure that the engines will be running before the boat gets into the current. Result is a weakened shearpin which breaks half way across. Therefore most desirable to find a lagoon or bit of sheltered water where they can be started without damage. 3. DON’T overload. One section is really all that it can manage for a trip across the RHINE. 4. The engine runs on a mixture of gasoline and oil. It is vital to get this mixture right. Very good engine but will only go if kept sweet. 5. It takes 3 good men to carry the engine. 6. Engine should never be run out of the water. It does not need warming up but a check up before the party is a good thing if it can be managed. 7. If you hit an obstacle the natural thing to do is to cut off the engine but actually you MUST keep it running or else the whole boat will get swamped at once by your backwash. Weasels 1. Cannot be relied upon to get across the RHINE under their own power: can be towed ( NOT by storm boats ) but not worth while. 2. Plenty of Buffalo lift available and so should be taken across in Buffaloes. Class 9 Rafts 1. RE personnel need a great deal of training or else they will make a very poor showing indeed. 2. A wire hawser or cable for them to run on will add to their efficiency enormously unless the crews are very well trained. 3. Will take a D4 Recovery Vehicle or a White half-track. 4. Must be used principally for 3-tonners or 15-cwts. 5. Have a very slow turn round (about 12 vehicles per hour on the Divisional front in daylight and 9 by night). 6. Takes about 4 hours to construct after arrival on site. 7. Can be towed to site on a sledge by a half-track. Class 9 FBE bridges 1. Across a river of this size will need a lot of nursing and must be expected to be out of action for maintenance for 8 hours out of every 24. 2. Will be wrecked by an overloaded vehicle or any trailer. 3. Special police or officers needed in Vehicle Waiting Areas to see that no vehicle gets through onto the FBE bridge which is not well within Class 9. 4. Cannot expect high capacity over this bridge owing to its length and flimsy construction and the psychological effect on drivers. Therefore calculate an overall figure of 100 per hour. Class 50/60 Rafts 1. Very efficient but relies on getting a hawser across the river for it to work on. Run by Assault Squadron RE. 2. Will only take one tank or M10 at a time but will take 2 Kangaroos or White half-tracks. 3. Capacity low – about 9 vehicles per hour by day and 7 by night on Divisional front. 4. Drivers need practice in driving on and off if this can be arranged. 5. Takes about 4 hours to construct after arrival on sight. 6. Is towed to site on a sledge by an AVRE. CDL Tanks 1. This is a Grant tank from which the top turret armament (37mm) has been removed and a CDL searchlight substituted. This searchlight is invulnerable to small arms and machine gun fire and can be switched on and off, or made to flicker, at will. 2. The Grant tank can use its 75mm gun in the right hand sponson on targets illuminated by the searchlight. 3. Length 19ft. height 10ft 10 ins. Width 8 ft 7 ins. DD Tanks 1. The Sherman DD tank is a Sherman V or Sherman III waterproofed and fitted with a canvas screen which increases the vehicles height to 13 ft when erected. This canvas screen is held in place by rubber air columns and steel struts. The vehicle is completely amphibian when the canvas screen is raised and is then propelled by two propellers driven from the main tank engine. Its speed in the water is 4 ½ knots and a depth of 9 ft is required for flotation. Its performance on land is that of a normal Sherman tank. 2. FOO’s have to act as crew commanders and need special training as only the crew commander can see and steer. 3. Once inflated the canvas is very liable to damage from trees, bushes and shrubs, and so they need an Inflation Area from which they have a clear run over open country to the river. 4. Performance climbing out of a river is very delicate. Preparation of exits is almost invariably needed; anyhow, recce certainly is.