T Class Sub (UK)

History: The Royal Navy's T class (or Triton class) of diesel-electric submarines was designed in the 1930s to replace the O, P, and R classes. Fifty-three members of the class were built just before and during the Second World War, where they played a major role in the Royal Navy's submarine operations. Four boats in service with the Royal Netherlands Navy were known as the Zwaardvisch class.

In the decade following the war, the oldest surviving boats were scrapped and the remainder converted to anti-submarine vessels to counter the perceived growing Soviet submarine threat. The Royal Navy disposed of its last operational boat in 1969, although it retained one permanently moored as a static training submarine until 1974. The last surviving boat, serving in the Israel Sea Corps, was scrapped in 1977. Design began in 1934 but was constrained by the 1930 London Naval Treaty restricting the total British submarine fleet to 52,700 tons, a maximum of 2,000 tons for any boat, and maximum armament of one 5.1 in (130 mm) gun. The "Repeat P"s, as the design was originally called, were intended to be large and powerful enough to operate against Japan in the absence of other British naval units. Britain was in a financial crisis and would have difficulty affording enough boats to meet their allowance.

Type: Submarine

Primary Country: The United Kingdom, made up of England, Scotland, Wales and Northern Ireland, is an island nation in northwestern Europe. England – birthplace of Shakespeare and The Beatles – is home to the capital, London, a globally influential centre of finance and culture. England is also site of Neolithic Stonehenge, Bath’s Roman spa and centuries-old universities at Oxford and Cambridge.