CV Fleet aircraft carrier (1921–1975), multi-purpose aircraft carrier (1975–present)
CVA Aircraft Carrier, Attack
CVAN Nuclear-powered attack carrier (category merged into CVN, 30 June 1975)
CVE Escort aircraft carrier
CVL Light aircraft carrier
CVN Nuclear-powered aircraft carrier
LHA Landing Helicopter Assault, a type of Amphibious assault ship
LHD Landing Helicopter Dock, a type of Amphibious assault ship
LPH Landing Platform Helicopter, a type of Amphibious assault ship
 
BB Battleship
CA Cruiser, Armored (Heavy Cruiser)
CG Cruiser, Guided Missile
DD Destroyer
DDE Destroyer, a Destroyer (DD) converted for antisubmarine warfare
DDG Destroyer, Guided Missile
DE Destroyer Escort (Ocean escort)
FF Frigate
FFG Frigate, Guided Missile
LCS Littoral Combat Ship
 
PBR Patrol Boat, River (Pibber or PBR-Vietnam)
PT Motor Torpedo Boat (World War II)