operations. J S White 75 ft MTB A development of the Vosper designs, White had been building under sub-contract. After construction passed to Polish Navy as S5-S10. Armed with two 18-inch torpedoes, 6-pounder gun forward, twin 20mm Oerlikon aft and two twin .303 machine gun mountings. Fairmile D MTB The Fairmile D was a very large British MTB designed by Bill Holt and conceived by Fairmile Marine for the Royal Navy. Nicknamed "Dog Boats", they were designed to combat the known advantages of the German E-boats over previous British coastal craft designs. Larger than earlier MTB or motor gun boat (MGB) designs, the Fairmile D was driven by four Packard 12-cylinder 1250 horsepower supercharged petrol engines and could achieve 29 knots (54 km/h; 33 mph) at full load. The boat carried 5,200 gallons of 100 octane fuel for a range, at maximum continuous speed, of 506 nautical miles. Armament varied according to role but could include four 18-inch or two 21-inch torpedoes, 6-pounder and 2-pounder guns, Oerlikons, multiple machine guns and depth charges. Canadian MTBs These boats were designed by Hubert Scott-Paine for the Canadian Power Boat Company, and used by the Royal Canadian Navy 29th MTB Flotilla. Originally designed as motor gun boats (MGBs), carrying a 6-pounder (57mm, 2.24 inch) to engage enemy small craft, they were re-designated MTBs. Scott-Paine type G 70 foot boat Manufacturer: British Power Boats, Hythe Displacement: 55 tons Overall length: 72 ft 6 inches (21 m) Breadth: 20 ft 7 inches (6.3 m) Draught: 5 ft 8 inches (1.7 m) Maximum speed: (new) Armament: auto-loading QF 6-pounder (57mm, 2.24 inch) gun Two torpedo tubes (two torpedoes) .303 or .50 Vickers machine guns 20mm Oerlikon or 40 mm Bofors gun Powerplant – three Rolls-Royce or Packard 14M supercharged V-12 engines three shafts Power – 3,750 hp total Range – radius of action at Post-war usage After the end of World War II a number of Royal Navy vessels were stripped and sold for use as houseboats. These included MGBs as well as MTBs. Many of these were moored in Langstone Harbour, Littlehampton, Hayling Island and Wootton Creek, although most have now disappeared from these locations. More MTB houseboats can be found at Shoreham-by-Sea (West Sussex), Cobden Bridge (Southampton) and Bembridge (Isle of Wight). See also Battle of Rumani Coast – battle involving MTBs in Israeli-Egyptian conflict Coastal Forces of the Royal Navy E-boat Fairmile D