the SSBN's or balistic missle submarines are on strategic deterrance. the only class of SSBN's the navy currently has is the Ohio class. 726-743.
although the Ohio itself, SSBN 726 is undergoing conversion to SSGN, replacing its balistic missles with guided conventional payload missles.
Strategic nuclear deterrence
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.
A Fast Attack vessel, it was designed to hunt surface shipping and other submarines. It is also capable of transporting and inserting special mission troops (SEALS) and splicing submarine communication cables.
Virginia class
The Russian missile launching submarine, Typhoon Class, is slightly bigger than the USA missile launching submarine, Trident Class.
The Los Angeles class submarine is nuclear powered.