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 Commandant Rivière class was a class of frigates built for the French Navy in the late 1950s and early 1960s. Labeled "aviso-escorteur", they were designed to perform the role of overseas patrol in peacetime and anti-submarine escort in wartime. This vessel class is named after the French Navy officer Henri Rivière (1827–1883).
The Ford-class seaward defence boats were built for the Royal Navy in the 1950s.
The Taisto-class motor torpedo boats or T class was a series of motor torpedo boats, which saw service with the Finnish Navy during World War II. Following the war, the Paris Peace Treaty of 1947 prohibited the Finnish Navy from employing torpedo-carrying vessels of any kind and the Taisto class were converted into motor gunboats. By 1964, all vessels of the class had been removed from service.
The Sparviero class, also known as the Nibbio class, are small hydrofoil missile boats capable of traveling at speeds of 46 knots. They were designed for and formerly used by the Italian Navy. The Japanese 1-go-class missile boat is an updated version formerly used by the Japan Maritime Self-Defense Force (JMSDF).
HMS Mermaid was a Modified Black Swan-class sloop of the Royal Navy. Mermaid saw service as a convoy escort during the Second World War, taking part in the sinking of two German submarines while escorting Arctic convoys to and from the Soviet Union.
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.
The Le Normand class was a class of 14 fast frigates built for the French Navy in the late 1950s. They were an immediate follow-on from the earlier Le Corse-class frigates, and like them, were long-range convoy escorts capable of high speed. The first seven ships, paid for by the United States under the Mutual Defense Assistance Act were ordered in 1952. The remaining seven ships were paid for by France and ordered between 1953 and 1955.
The Albatros class was a class of eight corvettes designed and built in Italy in the 1950s. Paid for by US funds, they were operated by Italy, Denmark, Indonesia and the Netherlands. The last ships of the class were retired from service in Italy in 1991.
The Ehrensköld class was the first "modern" class of destroyer built by the Swedish Navy after the First World War. It introduced several new features, mainly heavy armament in three 12 cm guns and the new 53 cm torpedo. The class included two vessels, Ehrensköld and Nordenskjöld, which were both launched in 1926 and entered service in 1927. They patrolled the Baltic Sea until 1963, after which they became target vessels. Nordenskjöld was scrapped in 1964 and Ehrensköld in 1974.
The Najaden class, also known as the Huitfeldt class, was a class of two torpedo boats built for and operated by the Royal Danish Navy. Construction started in 1942, with the ships being completed in 1947, and continuing in service until 1966.
The Sa'ar 2 class ("Shalechet") is a class of missile boats built in Cherbourg, France at the Constructions Mécaniques de Normandie shipyard based on Israeli Navy modification of the German Navy's Jaguar-class fast attack craft. Three of the ships class were converted from Sa'ar 1-class patrol boats in 1974.
The Spica class was a class of six fast torpedo boats built for the Swedish Navy in the 1960s and decommissioned in the late 1980s. One ship, HSwMS Spica, is preserved as a museum ship in Stockholm, Sweden.
The Scimitar class was a class of three unarmed fast patrol boats operated by the British Royal Navy for the training purposes in the 1970s. They were built by Vosper Thornycroft in 1969 to 1971 and were withdrawn from use in 1981.
The Audaz class was a class of nine destroyers built for the Spanish Navy after the Second World War. Construction was slow, with only four completed to the original design from 1953–1956. The remaining five ships completed as anti-submarine escorts with a new armament and sensor fit from 1960 to 1965, while the original four ships were also modified to this standard. Built at Ferrol, they completed in 1946–1950 and were rated as gunboats, and were redesignated as frigates in 1959. The last of the class, Intrepido, was stricken in 1982.
The Pizzaro class was a class of eight escort vessels built for the Spanish Navy in the 1940s. Built at Ferrol, they were completed in 1946–1950 rated as gunboats, and were redesignated as frigates in 1959. They started to be withdrawn from use in 1968, with the last of the class, Vincente Yañez Pinzon, stricken in 1982.
The Atrevida class was a class of six corvettes built for the Spanish Navy in the 1950s.
HNLMS Overijssel (D815) was a destroyer of the Friesland class. The ship was in service with the Royal Netherlands Navy from 1957 to 1982. The destroyer was named after the Dutch province of Overijssel and was the twelfth ship with this name. In 1982 the ship was taken out of service and sold to Peru where it was renamed Coronel Bolognesi.
Commandant Rivière was a Commandant Rivière-class frigate of French Navy.
The La Combattante II patrol boat was a type of fast attack craft built in France for export during the 1970s. Some 37 were built in various classes for several navies around the world.
Royal Navy 
