USCGC Legare (WSC-144) was cutter that served in the United States Coast Guard for almost forty-one years.
Sister ship USCGC General Greene (WPC-140).
USS Mackerel (SS-204), the lead ship of her class of submarines, was the first ship of the United States Navy named for the mackerel. Mackerel and her near-sister Marlin were prototype small submarines which the Navy was exploring to replace the aging S-class submarines.
Mackerel on 22 March 1941.