The Tang-class submarines were the first submarines designed and built by the United States Navy after WWII. They incorporated the best features of the high-speed German Type XXI U-boat and the venerable U.S. Navy fleet submarine. The Tang-class, with the fleet submarines converted under the Greater Underwater Propulsion Power (GUPPY) program, had much higher submerged performance than their predecessors, but were quickly surpassed by the nuclear-propelled submarines that entered service beginning in 1954. Six units in total were built.
The Delfinen-class submarines were the first class of submarines constructed for the Royal Danish Navy following World War II. They were designed and built within Denmark, with first three boats of the class financed by Denmark. The fourth was financed by the United States under the Cost Share program. Constructed between 1956 and 1963, the class comprising four submarines entered service in 1961 and the last taken out of service in 1990. Replaced by the Norwegian Kobben class, three of them were scrapped while a fourth was converted into a museum ship and remains on display at the Aalborg Maritime Museum.
HMS Battleaxe was a Weapon-class destroyer of the Royal Navy, completed just after the Second World War.
The Storm-class patrol boat was a series of fast patrol boats (FPB) consisting of 20 vessels built for the Royal Norwegian Navy.
The Snøgg class was a Royal Norwegian Navy class of fast patrol boats (FPB). It might also be classified as a torpedo boat or a missile boat. In Norway this type of vessel is called a missile torpedo boat (MTB). The class was named after its lead vessel, Snøgg, which is a Norwegian word meaning "fast". All of the subsequent names are synonyms of "fast".
The Nasty type patrol boats were a series of fast patrol boats designed and built in Norway during the 1950s and 1960s for the Norwegian, and other, navies.
HMS Rorqual (S02) was a Porpoise-class submarine launched in 1956. She was built by the Vickers shipyard in Barrow-in-Furness, Cumbria, England. The boat was named for both the rorqual, a family of whale, and the earlier Second World War-era submarine of the same name.
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 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).
HMS Narwhal (S03) was a Porpoise-class submarine of the Royal Navy. She was launched on 25 October 1957.
The Alpino class were a group of two frigates built for the Italian Navy during the Cold War.
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 Mendoza class were a series of three destroyers built in the United Kingdom for the Argentine Navy in the 1920s. They were the first part of the Argentine re-armament programme of the 1920s. Construction began in 1927 and all three were commissioned in 1929. All three destroyers were converted to anti-aircraft escorts in 1958 and remained in service until 1962 when they were discarded.
The Dealey-class destroyer escorts were the first post-World War II escort ships built for the United States Navy.
The Bergamini class was a class of four frigates operated by the Italian Navy. They entered service in 1961, with the last one being stricken in 1988.
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.
HMS Eggesford was a Type III Hunt-class destroyer of the Royal Navy. She entered service in January 1943, carrying out convoy escort, patrol and anti-shipping attacks for most of the rest of the Second World War. In 1957, she was sold to the West German Navy, serving as a training ship for the submarine weapons school until 1968.
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.
Royal Norwegian Navy 
