Department of Defense:

Exo-Wars Military Database

Submarines
Non-Combatant
DSRV
NR-1 DSV
Combatant: 20th Century
Los Angeles Attach Sub
Ohio Ballistic Submarine
Seawolf Attack Submarine
Combatant: Supercavitating Combatant: Supercavitating
Orca Ballistic Carrier Sub Imperial Carrier Sub
Dreadnaught Battleship Sub Intimidator Destroyer Sub