US Wolfpack Submarine group

Description

1 Marlin class
1Balao class
2 Benita class
USS Marlin (SS-205)
, a
Mackerel-class
submarine
, was the first ship of the
United States Navy
to be named for the
marlin
, a large game fish. Marlin and her near-sister Mackerel (designed and built by the
Electric Boat Company
) were prototype small submarines, which the Navy was exploring to replace the aging
S-class submarines
. differ as to whether Marlin had a
direct drive
propulsion system or
diesel-electric
drive.
The
Balao class
was a successful design of
United States Navy
submarine
used during
World War II
, and with 120 boats completed, the largest class of submarines in the United States Navy. An improvement on the earlier
Gato class
, the boats had slight internal differences. The most significant improvement was the use of thicker, higher
yield strength
steel in the
pressure hull
skins and frames, which increased their
test depth
to 400 feet (120 m).
Tang
actually achieved a depth of 612 ft (187 m) during a test dive, and exceeded that test depth when taking on water in the forward torpedo room while evading a destroyer.
The
V-boats
were a group of nine
United States Navy
submarines
built between
World War I
and
World War II
from 1921 to 1934. These were not a
ship class
in the usual sense of a series of nearly identical ships built from the same design, but shared authorization under the "fleet boat" program. The term "V-boats" as used includes five separate classes of submarines. They broke down into three large, fast
fleet submarines
(V-1 through V-3), three large long-range submarines (V-4 through V-6), and three medium-sized submarines (V-7 through V-9). The successful fleet submarines of World War II (
Tambor class
through
Tench class
) were descended from the last three, especially V-7, though somewhat larger with pure
diesel-electric
propulsion systems.