| Abbreviation | Definition |
|---|---|
| ASR | Submarine Rescue Ship (Auxiliary, Submarine, Rescue) |
| ASWC | Anti-Submarine Warfare Corvette |
| AT | Tug (Auxiliary, Tug) |
| ATA | Auxiliary Ocean Tug (Auxiliary, Tug, Auxiliary) |
| ATB | Automated Torpedo Boat |
| ATC | Armored Troop Carrier |
| ATF | Fleet Tug (Auxiliary, Tug, Fleet) |
| ATO | Ocean Tug (Auxiliary, Tug, Ocean) |
| ATS | Salvage Tug (Auxiliary, Tug, Salvage) |
| AV | Seaplane Tender (Auxiliary, heaVier-than-air) |
| AVD | Destroyer Seaplane Tender (Auxiliary, heaVier-than-air, Destroyer) |
| AVP | Small Seaplane Tender (Auxiliary, heaVier-than-air, Personnel) |
| AVT | Training Aircraft Carrier (Auxiliary, heaVier-than-air, Training) |
| AW | Water Distilling ship (Auxiliary, Water) |
| AZ | Airship Tender (Auxiliary, Zeppelin) |
| BARC | Barge Amphibious Resupply Cargo |
| BB | Battleship |
| BB-60 | USS Alabama |
| BBG | Guided Missile Battleship |
| BBQE | Battleship, Queen Elizabeth class |