Name/Hull Nbr

USS Mackerel  (SST1)

USS Marlin  (SST2)

USS Barracuda  (SST3)
Class

Mackerel

Mackerel

Baracuda
Year Built/Yard

EB, 9 Oct 53

EB, 20 Nov 53

EB, From SSK to SST3, 15 Aug 59
Designed and classified as a target submarine, the SSTs mission was to act as a target for training for anit-submairne forces.  In addition they helped to develop tactics for the submarine force to avoid the enemy ASW vessels.  Although designed primarily as a trarget trainer, they were equipped to fire torpedoes.  Because of this, they were capable of conducting many missions common to submarine warfare.