- D: Destroyer (pre-1920)
- DD: Destroyer
- DDE: Escort destroyer (category abolished 1962)
- DDG: Guided missile destroyer
- DDK: Hunter-Killer Destroyer (category merged into DDE, 4 March 1950)
- DDR: Radar Picket Destroyer (retired)
- DE: Destroyer Escort (World War II, later became Ocean Escort)
- DE: Ocean Escort (abolished 30 June 1975)
- DEG: Guided Missile Ocean Escort (abolished 30 June 1975)
- DER: Radar Picket Destroyer Escort (abolished 30 June 1975)
- DL: Destroyer Leader (later Frigate) (retired)
- DLG: Guided Missile Frigate (abolished 30 June 1975)
- DLGN: Guided Missile Frigate (Nuclear-Propulsion) (abolished 30 June 1975)
- DM: Destroyer Minelayer (retired)
- DM: Destroyer Minesweeper (retired)
- DSRV: Deep Submergence Rescue Vehicle
- DSV: Deep Submergence Vehicle
Read more about this topic: List Of Hull Classifications