| Abbreviation | Definition |
|---|---|
| USS | United States Ship |
| VLCC | Very Large Crude Carrier |
| VLOC | Very Large Ore Carrier |
| VPB | Vietnamese Patrol Boat |
| VSS | Vessel Schedule Service |
| WAGB | Coast Guard Icebreaker (Coast Guard, Auxiliary, General, Breaker) |
| WAGC | Coast Guard Amphibious Command Ship |
| WDE | United States Coast Guard Destroyer Escort |
| WHEC | Coast Guard High-Endurance Cutter |
| WIX | Coast Guard, Unclassified Miscellaneous ship type |
| WLB | Seagoing Buoy Tender |
| WLB-401 | Sassafras class Coast Guard Cutter Buoy Tender |
| WLBB | Lake IceBreaker, Coast Guard (Coast Guard, Large Buoy Breaker) |
| WLBR | Seagoing Buoy Tender Replacement Vessel |
| WLI | Inland Buoy Tender |
| WLIC | Inland Construction Buoy Tender |
| WLM | Coastal Buoy Tender |
| WLMR | Coastal Buoy Tender Replacement Vessel |
| WLR | River Buoy Tender |
| WLTHC | Water Line to Top of Hatch Coaming |