none ACS – Auxiliary Crane Ships ACU – Assault Craft Units AD – Destroyer Tenders ADG – Degaussing Ships AE – Ammunition Ships AF – Stores Ships AFDB – Large Auxiliary Floating Dry Docks AFDM – Medium Auxiliary Floating Dry Docks AFS – Combat Stores Ships AG – Miscellaneous AGB – Icebreakers AGC – Amphibious Force Flagships AGDE – Escort Research Ships AGDS – Deep Submergence Support Ships AGEH – Hydrofoil Research Ships AGER – Environmental Research Ships AGF – Command Ships AGFF – Frigate Research Ships AGM – Missile Range Instrumentation Ships AGMR – Major Communications Relay Ships AGOR – Oceanographic Research Ships AGOS – Ocean Surveillance Ships AGP – Patrol Craft Tenders AGR – Radar Picket Ships AGS – Survey Ships AGSC – Coastal Survey Ships AGSS – Auxiliary Research Submarines AGTR – Technical Research Ships AH – Hospital Ships AK – Cargo Ships AKA – Attack Cargo Ships AKE – Dry Cargo / Ammunition Ships AKL – Light Cargo Ships AKR – Vehicle Cargo Ships AKS – Stores Issue Ships AKV – Transport And Aircraft Ferries AM – Minesweepers AO – Oilers AOE – Fast Combat Support Ships AOG – Gasoline Tankers AOR – Replenishment Oilers AOSS – Submarine Oilers AOT – Transport Oilers AP – Transports APA – Attack Transports APB – Self-propelled Barracks Ships APD – Highspeed Transports APH – Evacuation Transports APSS – Transport Submarines AR – Repair Ships ARB – Battle Damage Repair Ships ARC – Cable Repair Ships ARD – Auxiliary Repair Docks ARDM – Medium Auxiliary Repair Dry Docks ARG – Internal Combustion Engine Repair Ships ARH – Heavy Hull Repair Ships ARL – Landing Craft Repair Ships ARS – Salvage Ships ARSD – Salvage Lifting Vessels ARST – Salvage Craft Tenders ARV – Aircraft Repair Ships ARVA – Aircraft Repair Ships (Aircraft) ARVE – Aircraft Repair Ships (Engine) ARVH – Aircraft Repair Ships (Helicopter) AS – Submarine Tenders ASR – Submarine Rescue Ships ASSA – Cargo Submarines ASSP – Transport Submarines AT – Fleet Tugs ATA – Auxiliary Fleet Tugs ATF – Fleet Ocean Tugs ATS – Rescue and Salvage Ships AV – Seaplane Tenders AVB – Aviation Maintenance Logistics Ships AVM – Guided Missile Ships AVP – Small Seaplane Tenders AVT – Auxiliary Aircraft Transports BB – Battleships BMU – Beachmaster Units CA – Heavy Cruisers CAG – Heavy Guided Missile Cruisers CB – Large Cruisers CC – Command Ships CG – Guided Missile Cruisers CGN – Guided Missile Cruisers (nuclear-powered) CL – Light Cruisers CLAA – Anti-Aircraft Light Cruisers CLC – Command and Control Ships CLG – Light Guided Missile Cruisers CRUDESGRU – Cruiser Destroyer Groups CV – Aircraft Carriers CVA – Attack Aircraft Carriers CVAN – Attack Aircraft Carriers (nuclear-powered) CVB – Large Aircraft Carriers CVE – Escort Aircraft Carriers CVHA – Assault Helicopter Aircraft Carriers CVL – Light Aircraft Carriers CVN – Aircraft Carriers (nuclear-powered) CVS – Anti-Submarine Aircraft Carriers CVT – Training Aircraft Carriers CVU – Utility Aircraft Carriers CVW – Carrier Air Wings DD – Destroyers DDE – Escort Destroyers DDG – Guided Missile Destroyers DDK – Escort Destroyers DDR – Radar Picket Destroyers DE – Destroyer Escorts DEG – Guided Missile Escort Ships DER – Radar Picket Escort Ships DESRON – Destroyer Squadrons DL – Frigates DLG – Guided Missile Frigates DLGN – Guided Missile Frigates (nuclear-powered) DM – Light Minelayers DMS – Highspeed Destroyer Minesweepers EDD – Experimental Destroyers EDUCATION – Schools, Colleges, Academies EODMU – Explosive Ordnance Disposal Mobile Units EPF – Expeditionary Fast Transport ESB – Expeditionary Sea Base Ships ESD – Expeditionary Transfer Docks FF – Frigates FFG – Guided Missile Frigates FFT – Reserve Training Frigates HC – Helicopter Combat Support Squadrons HCS – Helicopter Combat Support Special Squadrons HM – Helicopter Mine Countermeasures Squadrons HS – Helicopter Anti-Submarine Squadrons HSC – Helicopter Sea Combat Squadrons HSL – Helicopter Anti-Submarine Squadrons (Light) HSM – Helicopter Maritime Strike Squadrons HST – High Speed Transport HT – Helicopter Training Squadrons HX – Air Test and Evaluation Squadrons IFS – Inshore Fire Support Ship IX – Unclassified Miscellaneous IXSS – Unclassified Miscellaneous Submarines LCC – Amphibious Command Ships LCI(L) – Landing Craft Infantry (Large) LCS – Littoral Combat Ships LCS(L) – Landing Craft Support (Large) LCU – Landing Craft Utility LHA – Amphibious Assault Ships (general purpose) LHD – Amphibious Assault Ships (multi purpose) LKA – Amphibious Cargo Ships LPA – Amphibious Transports LPD – Amphibious Transport Docks LPH – Amphibious Assault Ships (helicopter) LPSS – Amphibious Transport Submarines LSD – Dock Landing Ships LSIL – Landing Ships Infantry (Large) LSM – Landing Ships Medium LSMR – Landing Ships Medium (Rocket) LST – Tank Landing Ships LSV – Vehicle Landing Ships MCM – Mine Countermeasures Ships MCS – Mine Countermeasures Support Ships MHC – Coastal Mine Hunters MSC – Coastal Minesweepers MSF – Fleet Minesweepers MSO – Ocean Minesweepers NAS – Naval Air Stations NAVCOMMSTA – Naval Communications Stations NAVCOMMU – Naval Communications Units NB – Naval Bases And Stations NH – Naval Hospitals NMCB – Naval Mobile Construction Battalions NRD – Navy Recruiting Districts NSA – Naval Support Activities NSB – Naval Submarine Bases NSY – Naval Ship Yards NWS – Naval Weapons Stations PC – Patrol Coastal PCE – Patrol Craft Escorts PCER – Patrol Craft Escort (Rescue) PF – Patrol Frigates PG – Patrol Gunboats PGH – Hydrofoil Patrol Craft PHIBRON – Amphibious Squadrons PHM – Patrol Combatant Missile (hydrofoil) PHMRON – Hydrofoil Squadrons RESEARCH – Evaluation and Research Facilities RTC – Recruit Training Commands RVAH – Reconnaissance Attack Squadrons SBU – Special Boat Units SIMA – Shore Intermediate Maintenance Activities SS – Submarines SSA – Auxiliary Submarines SSAG – Auxiliary Submarines SSBN – Fleet Ballistic Missile Submarines SSG – Guided Missile Submarines SSGN – Guided Missile Submarines (nuclear-powered) SSK – Hunter-Killer Submarines SSN – Submarine (nuclear-powered) SSP – Transport Submarines SSR – Radar Picket Submarines SST – Training Submarines SUBGRU – Submarine Groups SUBRON – Submarine Squadrons TWR – Torpedo Retrievers USS – VA – Attack Squadrons VAH – Heavy Attack Squadrons VAP – Heavy Photographic Squadrons VAQ – Electronic Attack Squadrons VAW – Carrier Airborne Early Warning Squadrons VC – Composite Squadrons VF – Fighter Squadrons VFA – Strike Fighter Squadrons VFC – Fighter Squadron Composite VFP – Light Photographic Squadrons VMFA – Marine Strike Fighter Squadrons VP – Patrol Squadrons VPU – Patrol Squadron Special Units VQ – Electronic Countermeasures Squadrons VR – Fleet Logistics Support Squadrons VRC – Fleet Logistics Support Squadrons VS – Sea Control Squadrons VT – Training Squadrons VTC – Tactical Air Control Squadrons VW – Fleet Weather Reconnaissance Squadrons VX – Air Test and Evaluation Squadrons VXE – VXN – Oceanographic Development Squadrons VXS – Scientific Development Squadrons YAGR – Radar Picket Ships YO – Fuel Oil Barges YOG – Fuel Barges YP – District Patrol Craft YRST – Salvage Craft Tenders (NSP) YT – District Harbor Tugs YTB – Large Harbor Tugs