As HMS Turpin At the end of the war, all surviving Group 1 and Group 2 boats were scrapped, but the group 3 boats (which were of welded rather than riveted construction) were retained and fitted with
snort masts. In 1955,
Turpin was inside the arctic circle on an ELINT mission, listening for specific frequency bands of Soviet radars. Suddenly, the ELINT specialist noted an unusual signal that was from a very short range radar. The operator registered that they were about to be rammed by a Soviet Navy surface vessel, and a crash dive was ordered. The
Turpin submerged below a cold water line which allowed them to evade Soviet sonar and escape.
Turpin was sold to the
Israeli Navy in 1965, and renamed
Leviathan, after a biblical sea monster.
As INS Leviathan The submarine was purchased by
Israel, along with two of her T-class sisters, in 1965,
HMS Truncheon and
HMS Totem. She was
commissioned into the Israeli Sea Corps in 1967. She was eventually scrapped in 1978. A
Dolphin class submarine named
Leviathan was commissioned in 2000 to the Israeli Navy. ==Footnotes==