February 12th - On This Date - USN Submarine Service

1918 - 

PCU O-15 (SS-76) launched at California Shipbuilding Company, Long Beach, CA; sponsored by Mrs. J. J. Murphy.

1942 - 

PCU GROUPER (SS-214) commissioned USS GROUPER (SS-214) at the Electric Boat Company, Groton, CT; Lt. Comdr. C. E. Duke commanding.

1943 - 

PCU MINGO (SS-261) commissioned USS MINGO (SS-261) at the Electric Boat Company, Groton, CT; Lt. Cmdr. Ralph C. Lynch, Jr. commanding.

1944 -

PCU PLAICE (SS-390) commissioned USS PLAICE (SS-390) at Portsmouth Navy Yard, Kittery, ME; Lt. Comdr. Clyde B. Stevens commanding.

1945 - 

PCU LANCETFISH (SS-296) commissioned USS LANCETFISH (SS-296) at Boston Navy Yard, Boston, MA; Comdr. Ellis B. Orr commanding.

1969 - 

Ex-DENTUDA (SS-335) struck from the Naval Vessel Register.

1996 - 

Ex-JOHN ADAMS (SSBN-620) disposition complete by Nuclear Powered Ship and Submarine Recycling Program (NPSSRP) at Puget Sound Naval Shipyard, Bremerton, WA.