Editing Hull classification symbol (section)

=== Auxiliaries ===
An auxiliary ship is designed to operate in any number of roles supporting combatant ships and other naval operations.

==== Combat logistics type ====
Ships which have the capability to provide [[underway replenishment]] (UNREP) to fleet units.
* AE: [[List of auxiliaries of the United States Navy#Ammunition Ships (AE)|Ammunition ship]]
* AF: [[List of auxiliaries of the United States Navy#Provisions Store Ships (AF, T-AF)|Stores ship]] (retired)
* AFS: [[List of auxiliaries of the United States Navy#Combat Stores Ships (AFS, T-AFS)|Combat stores ship]]
* AK: [[List of auxiliaries of the United States Navy#Dry Cargo Ships (AK, T-AK)|Dry cargo ship]]
* AKE: [[List of auxiliaries of the United States Navy#Advanced Auxiliary Dry Cargo Ships (T-AKE)|Advanced dry cargo ship]]
* AKS: [[List of auxiliaries of the United States Navy#General Stores Issue Ships (AKS)|General stores ship]]
* AO: [[List of United States Navy oilers#Fleet Oilers (AO)|Fleet Oiler]]
* AOE: [[List of United States Navy oilers#Fast Combat Support Ships (AOE)|Fast combat support ship]]
* AOL: [[List of United States Navy oilers#Light Replenishment Oilers (T-AOL)|Light replenishment oiler]]<ref group=A>In 2020 the US Navy began to develop this new type of ship, construction of the first is planned for 2026</ref><ref name=USNI_20230428>{{cite news|title=Report to Congress on Navy Light Replenishment Oiler |date=April 2023 |url=https://news.usni.org/2023/04/28/report-to-congress-on-navy-light-replenishment-oiler |newspaper=USNI News |publisher=United States Naval Institute }}</ref>
* AOR: [[List of United States Navy oilers#Fleet Replenishment Oilers (AOR)|Replenishment oiler]]
* AVS: [[List of auxiliaries of the United States Navy#Aviation Stores Issue Ships (AVS)|Aviation Stores Issue Ship]] (retired)

==== Mobile logistics type ====
Mobile logistics ships have the capability to provide direct material support to other deployed units operating far from home ports.
* AC: [[List of auxiliaries of the United States Navy#Colliers (AC)|Collier]] (retired)
* AD: [[List of auxiliaries of the United States Navy#Destroyer Tenders (AD)|Destroyer tender]]
* AGP: [[List of auxiliaries of the United States Navy#Motor Torpedo Boat Tenders (AGP)|Patrol craft tender]]
* AR: [[List of auxiliaries of the United States Navy#Repair Ships (AR)|Repair ship]]
* ARB: [[List of auxiliaries of the United States Navy#Battle Damage Repair Ships (ARB)|Repair ship, battle damage]]
* ARC: [[List of auxiliaries of the United States Navy#Cable Repair Ships (ARC)|Repair ship, cable]]
* ARG: [[List of auxiliaries of the United States Navy#Internal Combustion Engine Repair Ships (ARG)|Repair ship, internal combustion engine]]
* ARH: Repair ship, heavy-hull<ref name=Jason group=A>See {{USS|Jason|ARH-1}}.</ref>
* ARL: [[List of auxiliaries of the United States Navy#Landing Craft Repair Ships (ARL)|Repair ship, landing craft]]
* ARV: Repair ship, aircraft
* ARVH: Repair ship, aircraft, helicopter
* AS: [[List of auxiliaries of the United States Navy#Submarine Tenders (AS)|Submarine tender]]
* AW: [[List of auxiliaries of the United States Navy#Distilling Ships (AW)|Distilling ship]] (retired)

==== Support ships ====
Support ships are not designed to participate in combat and are generally not armed. For ships with civilian crews (owned by and/or operated for [[Military Sealift Command]] and the [[United States Maritime Administration|Maritime Administration]]), the prefix T- is placed at the front of the hull classification.

Support ships are designed to operate in the open ocean in a variety of sea states to provide general support to either combatant forces or shore-based establishments. They include smaller auxiliaries which, by the nature of their duties, leave inshore waters.

* AB: Auxiliary Crane Ship (1920–41) <ref group=A>See [[USS Crane Ship No. 1]]</ref>
* ACS: [[List of auxiliaries of the United States Navy#Auxiliary Crane Ships (T-ACS)|Auxiliary Crane Ship]]
* AG: [[List of auxiliaries of the United States Navy#Miscellaneous Ships (AG, T-AG)|Miscellaneous Auxiliary]]
* AGB: [[List of auxiliaries of the United States Navy#Icebreakers (AGB)|Icebreaker]]
* AGDE: Testing Ocean Escort <ref group=A>See {{USS|Glover|AGDE-1}}</ref>
* AGDS: [[List of auxiliaries of the United States Navy#Deep Submergence Support Ship (T-AGDS)|Deep Submergence Support Ship]]
* AGEH: Hydrofoil, experimental <ref group=A>See {{USS|Plainview|AGEH-1}}</ref>
* AGER: (i): Miscellaneous Auxiliary, Electronic Reconnaissance
* AGER: (ii): [[List of auxiliaries of the United States Navy#Environmental Research Ships (AGER)|Environmental Research Ship]]
* AGF: [[List of auxiliaries of the United States Navy#Command Ships (AGF)|Miscellaneous Command Ship]]
* AGFF: Testing Frigate <ref group=A>See {{USS|Glover|AGFF-1}}</ref>
* AGHS: Patrol combatant support ship—ocean or inshore
* AGL: Auxiliary vessel, [[lighthouse tender]]
* AGM: [[List of auxiliaries of the United States Navy#Missile Range Instrumentation Ships (T-AGM)|Missile Range Instrumentation Ship]]
* AGMR: [[List of auxiliaries of the United States Navy#Major Communications Relay Ships (AGMR)|Major Communications Relay Ship]]
* AGOR: [[List of auxiliaries of the United States Navy#Oceanographic Research Ships (T-AGOR)|Oceanographic Research Ship]]
* AGOS: [[List of auxiliaries of the United States Navy#Ocean Surveillance Ships (T-AGOS)|Ocean Surveillance Ship]]
* AGR: [[List of auxiliaries of the United States Navy#Radar Picket Ships (AGR)|Radar picket ship]]
* AGS: [[List of auxiliaries of the United States Navy#Surveying Ships (AGS)|Surveying Ship]]
* AGSC: [[List of auxiliaries of the United States Navy#Coastal Survey Ships (AGSC)|Coastal Survey Ships]]
* AGSE: Submarine and Special Warfare Support
* AGTR: [[List of auxiliaries of the United States Navy#Technical Research Ships (AGTR)|Technical research ship]]
* AH: [[List of auxiliaries of the United States Navy#Hospital Ships (AH)|Hospital ship]]
* AKD: Cargo Ship, Dock <ref group=A>See {{USS|Point Barrow|AKD-1}}</ref>
* AKL: [[List of auxiliaries of the United States Navy#Small Cargo Ships (AKL)|Cargo Ship, Small]]
* AKN: [[List of auxiliaries of the United States Navy#Net Cargo Ships (AKN)|Cargo Ship, Net]]
* AKR: [[List of auxiliaries of the United States Navy#Vehicle Cargo Ships (T-AKR)|Cargo Ship, Vehicle]]
* AKV: [[List of auxiliaries of the United States Navy#Aircraft Transports (AKV, T-AKV)|Cargo Ship, Aircraft]]
* AN: [[List of auxiliaries of the United States Navy#Net Laying Ships (AN)|Net laying ship]]
* AOG: [[List of auxiliaries of the United States Navy#Gasoline Tankers (AOG, T-AOG)|Gasoline tanker]]
* AOT: [[List of United States Navy oilers#Transport Oilers (AOT)|Transport Oiler]]
* AP: [[List of auxiliaries of the United States Navy#Transports (AP, T-AP)|Transport]]
* APB: [[List of auxiliaries of the United States Navy#Self-Propelled Barracks Ships (APB)|Self-propelled Barracks Ship]]
* APC: [[List of auxiliaries of the United States Navy#Coastal Transports (APC)|Coastal Transport]]
* APc: [[List of auxiliaries of the United States Navy#Small Coastal Transports (APc)|Coastal Transport, Small]]
* APH: [[List of auxiliaries of the United States Navy#Evacuation Transports (APH)|Evacuation Transport]]
* APL: [[List of auxiliaries of the United States Navy#Barracks Craft (APL)|Barracks Craft]]
* ARS: [[List of auxiliaries of the United States Navy#Rescue and Salvage Ships (ARS)|Rescue and Salvage Ship]]
* ARSD: [[List of auxiliaries of the United States Navy#Salvage Lifting Vessels (ARSD)|Salvage Lifting Vessels]]
* ASR: [[List of auxiliaries of the United States Navy#Submarine Rescue Vessels (ASR)|Submarine Rescue Ship]]
* AT: [[List of auxiliaries of the United States Navy#Fleet Tugs (AT)|Fleet Tug]]
* ATA: [[List of auxiliaries of the United States Navy#Auxiliary Ocean Tugs (ATA, T-ATA)|Auxiliary Ocean Tug]]
* ATF: [[List of auxiliaries of the United States Navy#Fleet Ocean Tugs (ATF, T-ATF)|Fleet Ocean Tug]]
* ATLS: Drone Launch Ship
* ATO: [[List of auxiliaries of the United States Navy#Fleet Tugs, Old (ATO)|Fleet Tug, Old]]
* ATR: [[List of auxiliaries of the United States Navy#Rescue Tugs (ATR)|Rescue Tug]]
* ATS: [[List of auxiliaries of the United States Navy#Salvage and Rescue Ships (ATS)|Salvage and Rescue Ship]]
* AVB(i): Aviation Logistics Support Ship
* AVB(ii): Advance Aviation Base Ship
* AVM: Guided Missile Ship <ref group=A>See {{USS|Norton Sound|AVM-1}}</ref>
* AVT(i): Auxiliary Aircraft Transport
* AVT(ii): Auxiliary Aircraft Landing Training Ship
* EPCER: Experimental – Patrol Craft Escort – Rescue
* PCER: Patrol Craft Escort – Rescue <ref>{{cite web|url=http://www.navsource.org/archives/12/02848.htm|title=PCER-848|publisher=navsource|access-date=21 December 2017}}</ref>
* SBX: [[Sea-based X-band Radar]] – a mobile [[active electronically scanned array]] [[early-warning radar]] station.

==== Service type craft ====
Service craft are navy-subordinated craft (including non-self-propelled) designed to provide general support to either combatant forces or shore-based establishments. The suffix "N" refers to non-self-propelled variants.
* AFDB: [[Auxiliary floating drydock|Large Auxiliary]] Floating [[Dry Dock]]
* AFD/AFDL: [[Auxiliary floating drydock|Small Auxiliary Floating Dry Dock]]
* AFDM: [[Auxiliary floating drydock|Medium Auxiliary Floating Dry Dock]]
* ARD: [[Auxiliary floating drydock|Auxiliary Repair Dry Dock]]
* ARDM: [[Auxiliary floating drydock|Medium Auxiliary Repair Dry Dock]]  {{USS|Oak Ridge|ARDM-1}}
* JUB/JB : Jack Up Barge

==== Submersibles ====
* DSRV: [[Deep Submergence Rescue Vehicle]]
* DSV: [[Deep Submergence Vehicle]]
* NR: Submersible Research Vehicle<ref name=NR-1 group=A>See [[Deep Submergence Vessel NR-1]].</ref>