A motor torpedo boat is a fast torpedo boat, especially of the mid 20th century. The motor in the designation originally referred to their use of petrol engines, typically marinised aircraft engines or their derivatives, which distinguished them from other naval craft of the era, including other torpedo boats, that used steam turbines or reciprocating steam engines. Later, diesel-powered torpedo boats appeared, in turn or retroactively referred to as "motor torpedo boats" for their internal combustion engines, as distinct from steam powered reciprocating or turbine propulsion.
The C class was a class of 32 destroyers of the Royal Navy that were launched from 1943 to 1945. The class was built in four flotillas of 8 vessels, the "Ca", "Ch", "Co" and "Cr" groups or sub-classes, ordered as the 11th, 12th, 13th and 14th Emergency Flotillas respectively. The sub-class names are derived from the initial 2 letters of the member ships' names, although the "Ca" class were originally ordered with a heterogeneous mix of traditional destroyer names. A fifth flotilla, the "Ce" or 15th Emergency Flotilla, was planned but were cancelled in favour of the Weapon-class destroyers after only the first two ships had been ordered. The pennant numbers were all altered from "R" superior to "D" superior at the close of World War II; this involved some renumbering to avoid duplications.
A submarine chaser or subchaser is a small naval vessel that is specifically intended for anti-submarine warfare. Many of the American submarine chasers used in World War I found their way to Allied nations by way of Lend-Lease in World War II.
The motor gunboat (MGB) was a small, high-speed British military vessel of the Second World War, which was armed with a mix of guns, in contrast to the physically similar motor torpedo boat (MTB), whose main offensive weapon were torpedoes. The small size of the MGBs, and their high speed, made them difficult targets for German E-boats, though, like their opponents, they were limited by heavy weather, because they did not provide a stable-enough platform to aim the guns. The large number of guns meant the crew was relatively large, numbering as high as thirty men on the largest boats.
A motor launch (ML) is a small military vessel in Royal Navy service. It was designed for harbour defence and submarine chasing. Similar vessels were used by the Royal Air Force for armed high-speed air-sea rescue. Some vessels for water police service are also known as motor launches. Motor launches were slower than motor torpedo boats and motor gun boats
The Brave-class fast patrol boats were a class of two gas turbine motor torpedo boats (MTBs) that were the last of their type for the Royal Navy (RN) Coastal Forces division. They formed the basis for a series of simpler boats which were widely built for export.
The Fairmile C motor gun boat was a type of motor gunboat designed by Norman Hart of Fairmile Marine for the Royal Navy. An intermediate design, twenty-four boats were ordered on 27 August 1940 from Fairmile Marine in kit form and were assembled at multiple boatbuilders' yards and completed in 1941; they were initially rated as Motor Launches (ML), but received the designation Motor Gun Boats (MGB) on 1 August 1941, being numbered MGB 312–335.
The Fairmile D motor torpedo boat was a type of British motor torpedo boat (MTB) and motor gunboat (MGB), conceived by entrepreneur Noel Macklin of Fairmile Marine and designed by naval architect Bill Holt for the Royal Navy. Nicknamed "Dog Boats", they were designed to be assembled in kit form mass-produced by the Fairmile organisation and assembled at dozens of small boatbuilding yards around Britain, to combat the known advantages of the German E-boats over previous British coastal craft designs. At 115 feet in length, they were bigger than earlier MTB or motor gunboat (MGB) designs but slower, at 30 knots compared to 40 knots.
Coastal Forces was a division of the Royal Navy initially established during World War I, and then again in World War II under the command of Rear-Admiral, Coastal Forces. It remained active until the last minesweepers to wear the "HM Coastal Forces" cap tally were taken out of reserve in 1968. The division received more gallantry awards than any other branch of the Royal Navy during that period.
Steam gun boats (SGBs) were small Royal Navy vessels built from 1940 to 1942 for Coastal Forces during World War II. The class consisted of nine steam-powered torpedo boats.
HM Motor Gun Boat 2007 was a motor gunboat operated by Royal Navy Coastal Forces during the Second World War. She was initially built as one of eight gunboats ordered by the Turkish Navy, but which went on to see service in the North Sea as fast blockade runners. She was initially classed as the merchant vessel Gay Corsair, crewed by men of the merchant navy and sailing under the red ensign. She became HM Motor Gunboat 507 after being acquired by the Royal Navy, and finally HM Motor Gun Boat 2007. She was wrecked under this name in 1945.
The Dark class, or Admiralty "Type A", were a class of eighteen fast patrol boats that served with the United Kingdom's Royal Navy starting in 1954. All were named with a prefix of 'Dark'. The class could be fitted as either motor gun boats or motor torpedo boats, depending on the type of armament carried. They were the only diesel engined fast patrol boats in the Royal Navy. The class was fitted with the Napier Deltic two-stroke diesel engine. This was of unique layout, an opposed-piston engine with a triangular layout of three banks, 18 cylinders in total.
HMS Albrighton was a Type III Hunt-class destroyer built for the British Royal Navy. She entered service in February 1942, first carrying out an attack on German ships in the English Channel then taking part in the Dieppe Raid, rescuing survivors from the sinking destroyer HMS Broke. Albrighton was next assigned to search for and destroy the German auxiliary cruiser Komet, then escorted a convoy to Gibraltar in prevision of the Allied landings in North Africa. Between December 1942 and April 1943, she participated in the sinking of three more Axis ships with the First Destroyer Flotilla. During the Normandy Landings in June 1944, Albrighton served as a headquarters ship, then sank two German trawlers in the weeks after the invasion. After being converted to a destroyer in early 1945, she was damaged in a collision with a Landing Ship, then was assigned to the British Eastern Fleet. However, the war ended before she was deployed and Albrighton went into reserve.
HMS Atherstone was a Hunt-class destroyer of the Royal Navy. She was launched in late 1939 as the first of her class but was found to be unstable, and had to undergo significant modifications before entering service in March 1940.
HMS Brocklesby was a Type I Hunt-class destroyer of the Royal Navy. She served during the Second World War, spending much of the time in the English Channel and Mediterranean, taking part in the Dieppe Raid in 1942, and the Allied landings in Sicily and at Salerno in 1943. After the war, she was used as a sonar trials ship until 1963, and was sold for scrap in 1968.
The Orjen class were motor torpedo boats (MTBs) built for the Royal Navy of Yugoslavia in 1936 and 1937. A total of eight boats were built by the at the Lürssen Shipyard at Vegesack, Germany. They were based on the German S-2 MTBs, and their primary armament was 533 mm (21 in) torpedoes launched from two 550 mm (21.7 in) torpedo tubes, with anti-aircraft protection provided by a 40 mm (1.6 in) gun and a 15 mm (0.59 in) machine gun. At the start of the April 1941 Axis invasion of Yugoslavia, two boats managed to escape to Alexandria in Egypt where they served under the operational command of the British Mediterranean Fleet and under the administrative control of the Yugoslav government-in-exile. Their duties included convoy escort duties and operations against Vichy French forces in Syria. The remaining six boats were captured by Italian forces and commissioned in the Regia Marina with modified anti-aircraft armament, and were heavily employed in the Aegean Sea. They were also used by the Italians as the model for the Italian-built CRDA 60 t motor torpedo boats and the submarine chasers of the VAS class.
The Uskok class was a class of two motor torpedo boats built for the Royal Yugoslav Navy during the late 1920s. Named Uskok and Četnik, the boats were built by the Thornycroft Company based on their existing class of 17-metre-long (55 ft) Coastal Motor Boats, but were almost 1.5 metres (5 ft) longer. As their main armament they were equipped with cradles that carried two British-designed 456-millimetre (18 in) torpedoes, were fitted with hydrophones, and could carry depth charges instead of torpedoes if used in an anti-submarine role. The boats were lightly-built using mahogany, powered by two petrol engines, but lacked transverse bulkheads within the hull to mitigate leaks.
HMS Talybont was a Type III Hunt-class escort destroyer which served in the Royal Navy. She was launched in February 1943 and completed in May that year, serving for the rest of the Second World War. She took part in the Normandy Landings in June 1944, supporting the landings at Omaha Beach and the Pointe du Hoc. Post war she served in the Mediterranean before being reduced to reserve at the end of 1947. She was sold for scrap in 1961, with disposal completed by 1962.
HMS Cottesmore was a Hunt-class destroyer of the British Royal Navy. The ship was built by the Scottish shipbuilder Yarrow at their Scotstoun, Glasgow shipyard in 1939–1940, being launched on 5 September 1940 and commissioning on 29 December that year.
Vedetta anti sommergibile, commonly abbreviated as VAS and also known in Italy as VAS Baglietto, was a class of motor torpedo boats that served as coastal anti-submarine patrol boats in the Regia Marina during World War II. Several boats that survived the war later served in the post-war Italian Navy. The boats were officially classified as "anti-submarine patrol boats" and the first 30 boats were ordered by the Regia Marina at the Baglietto shipyards on 3 September 1941, entering service between March and November 1942.
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