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.
The volume of the hull of a Kilo-class submarine is approximately 1,300 to 1,500 cubic meters. This volume can vary slightly depending on the specific variant of the Kilo-class submarine. The Kilo-class is designed for anti-submarine and anti-surface warfare, and its hull shape is optimized for underwater operations.
Virginia class
The submarine
The Russian missile launching submarine, Typhoon Class, is slightly bigger than the USA missile launching submarine, Trident Class.
The number of men on a submarine varies depending on the type and class of the vessel. Generally, a U.S. Navy submarine can have a crew size ranging from about 70 to over 150 personnel. For example, a typical fast attack submarine like the Virginia-class usually has around 130 crew members, while a ballistic missile submarine like the Ohio-class can carry approximately 150 crew members.