There were 2 types of P Class submarines, the United States' Porpoise Class, and the Royal Navy's Parthian Class.
Porpoise Class
The first true U.S. Fleet Submarines, the Porpoise Class boats (P-1, P-3, and P-5; Porpoise, Shark, and Perch), they were the predecessors to the Gato class submarines. Originally built in 1936, in addition to air conditioning, they were the first boats with ability to run at 19 knots surfaced.
Parthian Class
A class of 6 submarines built in the 1920's, they were designed as long range patrol boats for the Far East. The last one was scrapped in 1946.
Beluga class submarine was created in 1988.
The Kursk was an Oscar II class submarine, of the Russian Navy.
Virginia class
Sarov class submarine was created on 07-08-20.
Virginia class submarine
United States S class submarine was created in 105.
The Perla class submarine was built for the Italian Navy in 1930. The submarine was built by Italy and designed by Bernadis in commission in 1936-1954.
Virginia class
The submarine
The Russian missile launching submarine, Typhoon Class, is slightly bigger than the USA missile launching submarine, Trident Class.
John P. Holland, an Irish engineer, is credited with developing the first practical modern submarine. He launched the Holland VI in 1897, which was the first submarine to be commissioned by the U.S. Navy in 1900. Holland's designs laid the foundation for future submarine technology.
The Los Angeles class submarine is nuclear powered.