List of auxiliary ship classes in service

The list of auxiliary ship classes in service includes all auxiliary ships in naval service in the world. For combatant ships, see the list of naval ship classes in service.

Command and support ships

Karel Doorman-class support ship
- Builder: Netherlands
- Displacement: 24,500 tons
- Operator: Royal Netherlands Navy: 1 commissioned around 2014
Andenes command ship
- Builder: Norway
- Displacement: 3,000 tons
- Operator: Royal Norwegian Navy: 3 in commission
Blue Ridge class joint command ship (LCC 19)
- Builder: United States
- Displacement: 19,700 tons
- Operator: United States Navy: 2 in commission
Kozara river command ship
- Builder: Germany
- Displacement: 600 tons
- Operator: Military of Serbia and Montenegro
Shichang multi-role support ship
- Displacement: 9,500 tons
- Operator: People's Liberation Army Navy
HMS Visborg Command ship
- 2,590 tones
- Operator: Swedish Navy
Absalon class flexible support ship
- Builder: Denmark
- Displacement: 4500 tons
- Operator: Royal Danish Navy:

2 ships commissioned. (Arguably a support ship, armed as a frigate)

Hospital ships

Mercy class hospital ship (AH 19)
- Builder: United States
- Displacement: 69,360 tonnes
- Operator: United States Navy: 2 in commission
RFA Argus Primary Casualty Receiving Ship (A135)
- builder: Italy converted by United Kingdom
- Displacement: 28,081 tonnes
- Operator: Royal Navy
Daishandao class hospital ship (866)
- Builder: People's Republic of China
- Displacement: 14,000 tonnes
- Operator: People's Liberation Army Navy

Replenishment ships

Berlin class (Type 702) combat support ship
- Builder: Germany
- Displacement: 20,240 tons
- Operator German Navy: 2 in service, 1 ordered
Dayun class stores ship
- Builder: People's Republic of China
- Displacement: 11,000 tons
- Operator: People's Liberation Army Navy: 2 in service
Fort Rosalie class replenishment ship
- Builder: United Kingdom
- Displacement: 23,890 tons
- Operator: Royal Navy, ( Royal Fleet Auxiliary), 2 in service
Fort Victoria class replenishment oiler
- Builder: United Kingdom
- Displacement: 32,818 tons
- Operator: Royal Navy, ( Royal Fleet Auxiliary), 1 in service
Kilauea class ammunition ship (AE 32)
- Builder: United States
- Displacement: 20,000 tons
- Operator: United States Navy: 4 in commission
Lewis and Clark class dry cargo/ammunition ship (T-AKE-1)
- Builder: United States
- Displacement: 41,000 tons
- Operator: United States Navy: 14 in commission
Mars class stores ship (AFS 1)
- Builder: United States
- Displacement: 17,300 tons
- Operator: United States Navy: 3 in commission
Nancang replenishment ship
- Builder: Soviet Union
- Displacement: 37,000 tons
- Operator: People's Liberation Army Navy: 1 in commission
Ness class stores ship (AFS 8)
- Builder: United Kingdom
- Displacement: 16,800 tons
- Operator: United States Navy: 3 in commission, former Royal Navy ships
Stromboli class replenishment ship
- Builder: Italy
- Displacement: 8,700 tons
- Operator: Marina Militare: 2 in service
Supply class fast combat replenishment ship (AOE 6)
- Builder: United States
- Displacement: 50,000 tons
- Operator: United States Navy: 4 in commission

Tankers and oilers

Alyay class fleet oiler (Project 160)
- Builder: Finland
- Displacement: 7,225 tons
- Operator: Russian Navy: 4 in service
Boris Chilikin class fleet oiler (Project 1559)
- Builder: Soviet Union
- Displacement: 22,460 tons
- Operator: Russian Navy: 4 in service
BAP Tacna fleet oiler
- Builder: Netherlands
- Displacement: 17,040 tons
- Operator: Peru, 1 in service
Chesapeake class transport tanker (AOT 5084)
- Builder: United States
- Displacement: 65,000 tons
- Operator: United States Navy: 2 in commission
Dubna class fleet oiler
- Builder: Soviet Union
- Displacement: 11,140 tons
- Operator: Russian Navy: 2 in service
Durance class replenishment oiler
- Builder: France / Australia
- Displacement: 17,900 tons
- Operators:
  - French Navy: 4 in service
  - Argentine Navy: 1 in service, former Durance
  - Royal Australian Navy: 1 in service as HMAS Success (built in Australia)
Fulin class coastal tanker
- Builder: People's Republic of China
- Displacement: 2,200 tons
- Operator: People's Liberation Army Navy: 19 in service
Fuqing class fleet oiler
- Builder: People's Republic of China
- Displacement: 21,740 tons
- Operator: People's Liberation Army Navy: 2 in service
Fuzhou class coastal tanker
- Builder: People's Republic of China
- Displacement: 1,200 tons
- Operator: People's Liberation Army Navy: 32 in service
Gus W. Darnell class transport tanker (AOT 1125)
- Builder: United States
- Displacement: 40,000 tons
- Operator: United States Navy: 5 in commission
Henry J. Kaiser class fleet oiler
- Builder: United States
- Displacement: 42,000 tons
- Operator: United States Navy: 13 in commission
Jinyou class coastal tanker
- Builder: People's Republic of China
- Displacement: 4,800 tons
- Operator: People's Liberation Army Navy: 3 in service
Khobi class coastal tanker
- Builder: Soviet Union
- Displacement: 1,525 tons
- Operators:
  - Albanian Naval Defense Forces: 1 delivered in 1959
Leizhou class coastal tanker
- Builder: People's Republic of China
- Displacement: 900 tons
- Operator: People's Liberation Army Navy: 9 in service
Olekma class fleet oiler
- Builder: Finland
- Displacement: 6,440 tons
- Operator: Russian Navy: 2 in service
Panarea class Gasoline tanker
- Builder: Italy
- Displacement: 863 tons
- Operator: Marina Militare: 4 in service
Rhön class tanker
- Builder: Germany
- Displacement: 14,169 tons
- Operator: German Navy, 2 in service
Rover class tanker
- Builder: United Kingdom
- Displacement: 11,500 tons (loaded)
- Operators:
  - Indonesian Navy, 1 in service
  - Portuguese Navy, 1 in service
  - Royal Navy ( Royal Fleet Auxiliary), 2 in service
Shengli class coastal tanker
- Builder: People's Republic of China
- Displacement: 4,940 tons
- Operator: People's Liberation Army Navy: 2 in service
HMAS Sirius replenishment tanker
- Builder: South Korea
- Displacement: 25,000 tons
- Operator: Royal Australian Navy: 1 in service
Uda class fleet oiler (Project 577)
- Builder: Soviet Union
- Displacement: 7,160 tons
- Operator: Russian Navy: 5 in service
Vyaz'ma fleet oiler
- Displacement: 8,900 tons
- Operator: Russian Navy
Walchensee class tanker
- Builder: Germany
- Displacement: 2,191 tons
- Operator: German Navy, 2 in service
Wave Knight class tanker
- Builder: United Kingdom
- Displacement: 34,500 tons
- Operator: Royal Navy, ( Royal Fleet Auxiliary), 2 in service

Tenders

Elbe class (Type 404) Tender
- Builder: Germany
- Displacement: 3,586 tons
- Operator German Navy: 6 in service
Class A Balsam class buoy tender
- Builder: United States
- Displacement: 1,025 tons
- Operators:
  - Estonian Navy: 1 delivered in 1997 from the US Coast Guard
  - United States Coast Guard: 5 in commission
Dajiang class submarine tender and salvage ship
- Builder: People's Republic of China
- Displacement: 10,087 tons
- Operator: People's Liberation Army Navy: 3 in service
Dazhou class submersible support ship
- Builder: People's Republic of China
- Displacement: 1,100 tons
- Operator: People's Liberation Army Navy: 2 in service
Emory S. Land class submarine tender/repair ship (AS 39)
- Builder: United States
- Displacement: 22,900 tons
- Operator: United States Navy: 2 in commission
Godetia minecraft tender
- Displacement: 2,500 tons
- Operator: Belgian Marine Component
Jules Verne fleet tender
- Displacement: 10,250 tons
- Operator: French Navy
Juniper class buoy tender (WLB 201)
- Builder: United States
- Displacement: 2,000 tons
- Operator: United States Coast Guard: 16 in commission
Keeper class buoy tender
- Builder: United States
- Displacement: 840 tons
- Operator: United States Coast Guard: 14 in commission
Lubin class small craft support ship
- Builder: Template:HCV
- Displacement: 880 tons
- Operator: Military of Serbia and Montenegro: 1 in service of 3 built
Malina class submarine tender (Project 2020)
- Builder: Soviet Union / Ukraine
- Displacement: 13,900 tons
- Operator: Russian Navy: 3 in service
Urga class submarine tender (Project 1886.1)
- Builder: Soviet Union
- Displacement: 9,650 tons
- Operator: Russian Navy: 2 in service
Rhin class tender
- Displacement: 2,445 tons
- Operator: French Navy: 2 in service
Vis small craft command and support ship
- Builder: Template:HCV
- Displacement: 680 tons
- Operator: Military of Serbia and Montenegro
Vulcain class diving tender
- Builder: France
- Displacement: 490 tons
- Operator: French Navy

Service vessels

Alagez submarine salvage and rescue ship (Project 537)
- Displacement: 14,300 tons
- Operator: Russian Navy
Amur class repair ship (Project 304)
- Builder: Poland
- Displacement: 5,500 tons
- Operator: Russian Navy: 11 in service
Anvil class inland construction tender (WLIC 75301)
- Builder: United States
- Displacement: 145 tons
- Operator: United States Coast Guard: 8 in service
Anteo submarine rescue ship
- Builder: Italy
- Displacement: 3,874 tons
- Operator: Marina Militare
HSwMS Belos submarine rescue ship.
- Operator: Swedish Navy
Bereza class degaussing ship (Project 130)
- Builder: Poland
- Displacement: 2,050 tons
- Operators:
  - Russian Navy: 17 in service
  - Bulgarian Navy: 1 in service
Bottsand class (Type 738) oil recovery ship
- Builder: Germany
- Displacement: 650 tons
- Operator: German Navy: 2 in service
Dalang class submarine rescue ship
- Builder: People's Republic of China
- Displacement: 4,000 tons
- Operator: People's Liberation Army Navy: 4 in service, plus 1 modified for electronic surveillance
Diamond State class crane ship (ACS 7)
- Builder: United States
- Displacement: 31,500 tons
- Operator: United States Navy: 2 in commission
Diligence fleet repair ship
- Builder: United Kingdom
- Displacement: 10,765 tons
- Operator: Royal Navy, ( Royal Fleet Auxiliary), 1 in service
Garonne class small repair ship
- Displacement: 2,320 tons
- Operator: French Navy
Gasconade class river buoy tender (WLR 75401)
- Builder: United States
- Displacement: 141 tons
- Operator: United States Coast Guard: 9 in commission
Gopher State class crane ship (ACS 4)
- Builder: United States
- Displacement: 25,000 tons
- Operator: United States Navy: 3 in commission
Green Mountain State class crane ship (ACS 9)
- Builder: United States
- Displacement: 31,500 tons
- Operator: United States Navy: 2 in commission
Hudong class rescue ship
- Builder: People's Republic of China
- Displacement: 5,000 tons
- Operator: People's Liberation Army Navy: 1 in service
Kashtan submersible support ship
- Displacement: 5,250 tons
- Operator: Russian Navy
Keystone State class crane ship (ACS 1)
- Builder: United States
- Displacement: 31,500 tons
- Operator: United States Navy: 3 in commission
Kommuna submersible support ship
- Displacement: 2,450 tons
- Operator: Russian Navy
Mühlhausen diver support ship
- Builder: Germany
- Displacement: 854 tons
- Operator: German Navy: 1 in service
Oskol class repair ship (Project 300/301/303)
- Builder: Poland
- Displacement: 2,700 tons
- Operator: Russian Navy: 8 in service
Ouachita class buoy tender (WLR 65501)
- Builder: United States
- Displacement: 143 tons
- Operator: United States Coast Guard: 6 in service
Pamlico class inland construction tender (WLIC 800)
- Builder: United States
- Displacement: 416 tons
- Operator: United States Coast Guard: 4 in commission
Pelym class degaussing ship (Project 1799)
- Builder: Soviet Union
- Displacement: 1,200 tons
- Operator: Russian Navy: 17 in service
Pionier Moskvyy class submersible support ship (Project 05360)
- Builder: Soviet Union
- Displacement: 7,960 tons
- Operator: Russian Navy: 4 in service
Simeto class Water Transport
- Builder: Italy
- Displacement: 1,968 tons
- Operator: Marina Militare: 2 in service
Westerwald class transport ship
- Builder: Germany
- Displacement: 4,042 tons
- Operator: German Navy: 1 in service
Yanbai class degaussing ship
- Builder: People's Republic of China
- Displacement: 750 tons
- Operator: People's Liberation Army Navy: 4 in service
Youdian class cable ship
- Builder: People's Republic of China
- Displacement: 1,550 tons
- Operator: People's Liberation Army Navy: 9 in service, including 3 modified as buoy tenders
Youzhong class cable ship
- Builder: People's Republic of China
- Displacement: 750 tons
- Operator: People's Liberation Army Navy: 3 in service
Zeus cable ship (ARC 7)
- Displacement: 15,000 tons
- Operator: United States Navy

Tugs

Abeille Flandre class large salvage tug
- Displacement: 3,800 tons
- Operator: French Navy: 2 in service
Alcyon class ocean tug and buoy tender
- Displacement: 1,500 tons
- Operator: French Navy: 2 in service
Atlante class ocean tug
- Builder: Italy
- Displacement: 750 tons
- Operator: Marina Militare: 2 in service
Bay class icebreaking tug (WTGB 101)
- Builder: United States
- Displacement: 660 tons
- Operator: United States Coast Guard: 9 in commission
Barentshav class offshore patrol vessel
- Builder: Norway
- Displacement: 3,200 tons
- Operator: Royal Norwegian Navy: 3 in commission
Belier class coastal tug
- Displacement: 800 tons
- Operator: French Navy: 3 in service
Capstan class (65 Foot) harbor tug (WYTL 65601)
- Builder: United States
- Displacement: 72 tons
- Operator: United States Coast Guard: 10 in commission
Chamois class coastal tug and logistical support ship
- Displacement: 505 tons
- Operator: French Navy: 1 in service
Ciclope class ocean tug
- Builder: Italy
- Displacement: 660 tons
- Operator: Marina Militare: 6 in service
Chieftain anchor handling tug supply vessel
- Builder: Germany
- Displacement: 2,028 tons
- Operator: Royal Norwegian Navy: 1 in service
Daozha class salvage tug
- Builder: People's Republic of China
- Displacement: 4,000 tons
- Operator: People's Liberation Army Navy: 1 in service
Dinghai class fleet tug
- Builder: People's Republic of China
- Displacement: 1,470 tons
- Operator: People's Liberation Army Navy: 2 in service
Fehmarn class (Type 720) salvage tug
- Builder: Germany
- Displacement: 1,310 tons
- Operator: German Navy
Goliat class ocean tug (Project 733)
- Builder: Soviet Union
- Displacement: 890 tons
- Operator: Russian Navy: 25 in service
Goryn class fleet tug (Project 563)
- Builder: Finland
- Displacement: 2,200 tons
- Operator: Russian Navy: 9 in service
Gromovoy class ocean tug
- Builder: Soviet Union / People's Republic of China
- Displacement: 890 tons
- Operator: People's Liberation Army Navy: 17 in service
Habagat class MT Tug (TB-271)
- Builder: Philippines
- Displacement: unknown
- Operator: Philippine Coast Guard
Helgoland class large sea-going tug
- Builder: Germany
- Operator: German Navy: 1 in service
Hujiu class ocean tug
- Builder: People's Republic of China
- Displacement: 750 tons
- Operator: People's Liberation Army Navy: 8 in service
Ingul class salvage tug (Project 1452/1453)
- Builder: Soviet Union
- Displacement: 4,000 tons
- Operator: Russian Navy: 4 in service
Iva class fire rescue tug (Project B-99)
- Builder: Poland
- Displacement: 2,300 tons
- Operator: Russian Navy: 4 in service
Katun class fire tug (Project 1893/1993)
- Builder: Soviet Union
- Displacement: 1,200 tons
- Operator: Russian Navy: 13 in service
Lütje Horn class (Type 725) harbour tug
- Builder: Germany
- Operator: German Navy: 6 in service
MB-330 class ocean tug
- Builder: Singapore
- Displacement: 1,180 tons
- Operator: Russian Navy: 1 in service
Neftegaz class salvage tug (Project B-92)
- Builder: Poland
- Displacement: 4,000 tons
- Operator: Russian Navy: 3 in service
Porto class harbour tug
- Builder: Italy
- Displacement: 412 tons
- Operator: Marina Militare: 11 in service
Powhatan class fleet tug (ATF 168)
- Builder: United States
- Displacement: 2,260 tons
- Operator: United States Navy: 5 in commission
Prut class salvage tug (Project 527M)
- Builder: Soviet Union
- Displacement: 3,330 tons
- Operator: Russian Navy: 2 in service
Rari class supply tug
- Displacement: 1,550 tons
- Operator: French Navy: 2 in service
Roslavl class ocean tug (Project A-202)
- Builder: Soviet Union / People's Republic of China
- Displacement: 625 tons
- Operators:
  - Russian Navy: 11 in service
  - People's Liberation Army Navy: 4 in service
Safeguard class salvage tug (ARS 50)
- Builder: United States
- Displacement: 3,300 tons
- Operator: United States Navy: 4 in commission
Sleipner class harbour tug
- Builder: Norway
- Displacement: 300 tons
- Operator: Royal Norwegian Navy: 2 in service
Sliva class salvage tug (Project 712)
- Builder: Finland
- Displacement: 3,000 tons
- Operator: Russian Navy: 3 in service
Sorum class fleet tug (Project 745)
- Builder: Soviet Union
- Displacement: 1,656 tons
- Operator: Russian Navy: 22 in service
Sylt class (Type 724) large harbour tug
- Builder: Germany
- Operator: German Navy: 2 in service
Tenace class ocean tug
- Displacement: 1,400 tons
- Operator: French Navy: 2 in service
Tuzhong class salvage tug
- Builder: People's Republic of China
- Displacement: 3,600 tons
- Operator: People's Liberation Army Navy: 4 in service
Wangerooge class tug
- Builder: Germany
- Displacement: 798 tons
- Operator: German Navy: 2 in service
Wustrow class (Type 414) harbour tug
- Builder: Germany
- Operator: German Navy: 2 in service

Icebreakers

Eisvogel class icebreaker
- Builder: Germany
- Displacement: 560 tons
- Operator: German Navy: 1 in service
HMS Endurance ice patrol ship (A171)
- Displacement: 6,100 tons
- Operator: Royal Navy
Healy polar icebreaker (WAGB 20)
- Displacement: 16,400 tons
- Operator: United States Coast Guard
Mackinaw lake icebreaker (WLBB-30)
- Displacement: 3,500 tons
- Operator: United States Coast Guard
Polar class polar icebreaker (WAGB 10)
- Builder: United States
- Displacement: 13,600 tons
- Operator: United States Coast Guard: 1 in commission
Svalbard polar icebreaker/offshore patrol vessel
- Builder: Norway
- Displacement: 6,500 tons
- Operator: Royal Norwegian Navy

Surveillance and intelligence vessels

Alpinist class electronic surveillance ships (Project 503M)
- Builder: Soviet Union
- Displacement: 1,140 tons
- Operator: Russian Navy: 3 in service
Bougainville electronic surveillance ship
- Displacement: 10,250 tons
- Operator: French Navy
Beidiao electronic surveillance ship
- Displacement: 2,500 tons
- Operator: People's Liberation Army Navy
Elettra electronic surveillance ship
- Builder Italy
- Displacement: 3,180 tons
- Operator: Marina Militare, NATO
Impeccable Ocean Surveillance Ship (T-AGOS-23)
- Displacement: 5,368 tons
- Operator: United States Navy
Lira class electronic surveillance ship (Project 1826)
- Builder: Soviet Union
- Displacement: 4,900 tons
- Operator: Russian Navy: 1 in service
Monge missile tracking ship
- Displacement: 21,040 tons
- Operator: French Navy
Observation Island Missile Range Instrumentation Ship (T-AGM-23)
- Displacement: 17,000 tons
- Operator: United States Navy
Oste class (Type 423) electronic surveillance ship
- Builder: Germany
- Displacement: 3,200 tons
- Operator: German Navy: 3 in service
Primor'ye class electronic surveillance ship (Project 394B)
- Builder: Soviet Union
- Displacement: 4,340 tons
- Operator: Russian Navy: 2 in service
Stalwart class Ocean Surveillance Ship (T-AGOS-1)
- Builder: United States
- Displacement: 2,285 tons
- Operator: United States Navy:
Victorious class Ocean Surveillance Ship (T-AGOS-19)
- Builder: United States
- Displacement: 3,370 tons
- Operator: United States Navy: 4 in commission
Vishnaya class electronic surveillance ship (Project 864)
- Builder: Soviet Union
- Displacement: 3,470 tons
- Operator: Russian Navy: 7 in service
Waters navigation research and missile tracking ship (AGS 45)
- Displacement: 12,000 tons
- Operator: United States Navy
Yanha class icebreaker and electronic surveillance ship
- Builder: People's Republic of China
- Displacement: 3,200 tons
- Operator: People's Liberation Army Navy: 4 in service
Yuanwang class missile tracking and space event support ship
- Builder: People's Republic of China
- Displacement: 21,000 tons
- Operator: People's Liberation Army Navy: 4 in service

Research and scientific vessels

Alliance class research ship
- Builder: Italy
- Displacement: 3,120 tons
- Operator: Marina Militare, NATO
Baldur class coastal survey ship
- Builder: Iceland
- Displacement: 50 tons
- Operator: Icelandic Coast Guard: 1 in commission
Belgica coastal research ship
- Displacement: 835 tons
- Operator: Belgian Marine Component
Echo class survey ship
- Builder United Kingdom
- Displacement: 3,470 tons
- Operator: Royal Navy: 2 in commission
Hayes acoustic trials ship (AG 195)
- Displacement: 4,000 tons
- Operator: United States Navy
Helmsand class trial and fleet service ships (Type 748)
- Builder: Germany
- Operator: German Navy: 3 in service
John McDonnell class coastal survey ship (AGS 51)
- Builder: United States
- Displacement: 2,000 tons
- Operator: United States Navy: 2 in commission
La Perouse class survey ship
- Displacement: 980 tons
- Operator: French Navy: 4 in service
Leonardo research ship
- Builder Italy
- Displacement: 337 tons
- Operator: Marina Militare
Magnaghi oceanographic research ship
- Builder Italy
- Displacement: 1,744 tons
- Operator: Marina Militare
Marjata research ship
- Builder: Norway
- Displacement: 5,300 tons
- Operator: Royal Norwegian Navy
Melville class oceanographic research/survey ship (AGOR 14)
- Builder: United States
- Displacement: 2,670 tons
- Operator: United States Navy: 2 in commission
Moma class survey ship (Project 861)
- Builder: Soviet Union / Poland
- Displacement: 1,600 tons
- Operator: Croatian Navy: 1 in service
Ninfe class oceanographic research ship
- Builder Italy
- Displacement: 415 tons
- Operator: Marina Militare: 2 in service
Pathfinder class oceanographic research/survey ship (AGS 60)
- Builder: United States
- Displacement: 4,750 tons
- Operator: United States Navy: 6 in commission
Planet class (Type 751) research ship (SWATH vessel)
- Builder: Germany
- Displacement: 3,500 tons
- Operator: German Navy: 1 in service
Rossetti class research ship
- Builder: Italy
- Displacement: 324 tons
- Operator: Marina Militare, 2 in service
HMS Scott ocean survey vessel
- Builder United Kingdom
- Displacement: 13,500 tons
- Operator: Royal Navy 1 in service
Shijian class research ship
- Builder: People's Republic of China
- Displacement: 3,000 tons
- Operator: People's Liberation Army Navy: 3 in service
Shuguang class research ship
- Builder: People's Republic of China
- Displacement: 2,400 tons
- Operator: People's Liberation Army Navy: 8 in service
Thomas G. Thompson class oceanographic research/survey ship (AGOR 23)
- Builder: United States
- Displacement: 3,250 tons
- Operator: United States Navy: 3 in commission
Wilhelm Pullwer class trial boat (Type 741)
- Builder: Germany
- Operator: German Navy: 1 in service
Valerian Uryvayav class survey ship
- Builder: Soviet Union
- Displacement: 1,050 tons
- Operators:
  - Lithuanian Naval Force: 1 delivered in 1991 for training and coastal survey
Xiangyanghong class research ship
- Builder: People's Republic of China
- Displacement: 10,000 tons
- Operator: People's Liberation Army Navy: 12 in service in various configurations
Yanlai class survey ship
- Builder: People's Republic of China
- Displacement: 1,100 tons
- Operator: People's Liberation Army Navy: 4 in service
Yanlun class research ship
- Builder: People's Republic of China
- Displacement: 2,000 tons
- Operator: People's Liberation Army Navy: 3 in service
Yannan class research ship
- Builder: People's Republic of China
- Displacement: 1,750 tons
- Operator: People's Liberation Army Navy: 4 in service
Cabo de Hornos class research ship
- Builder: ASMAR Chile
- Displacement: 3,020 tons
- Operator: Chilean Navy: 1 in service

Logistical support ships

1st Lt Harry L. Martin Marine Corps prepositioning ship (AK 3015)
- Builder: Germany
- Displacement: 51,531 tons
- Operator: United States Navy
Algol class fast vehicle cargo ship (AKR 287)
- Builder: Netherlands
- Displacement: 55,355 tons
- Operator: United States Navy: 8 in commission
Bob Hope class army vehicle prepositioning ship (AKR 300)
- Builder: United States
- Displacement: 62,000 tons
- Operator: United States Navy: 7 in commission
Bobo class Marine Corps prepositioning ship (AK 3008)
- Builder: United States
- Displacement: 46,000 tons
- Operator: United States Navy: 5 in commission
Cape Ann class general cargo ship (AK 5009)
- Builder: United States
- Displacement: 20,110 tons
- Operator: United States Navy: 4 in commission
Cape Breton class general cargo ship (AK 5056)
- Builder: United States
- Displacement: 21,000 tons
- Operator: United States Navy: 4 in commission
Cape Ducato class roll-on/roll-off vehicle cargo ship (AKR 5051)
- Builder: France / Sweden
- Displacement: 34,790 tons
- Operator: United States Navy: 5 in commission
Cape Fear class barge carrier (AK 5061)
- Builder: United States
- Displacement: 44,250 tons
- Operator: United States Navy: 2 in commission
Cape Flattery class barge carrier (AK 5070)
- Builder: United States
- Displacement: 62,300 tons
- Operator: United States Navy: 2 in commission
Cape Girardeau class container/bulk cargo ship (AK 2039)
- Builder: United States
- Displacement: 32,000 tons
- Operator: United States Navy: 2 in commission
Cape Hudson class vehicle cargo ship (AKR 5066)
- Builder: Japan / Norway
- Displacement: 51,000 tons
- Operator: United States Navy: 3 in commission
Cape Island class vehicle cargo ship (AKR 10)
- Builder: United States
- Displacement: 33,900 tons
- Operator: United States Navy: 4 in commission
Cape John class general cargo ship (AK 5022)
- Builder: United States
- Displacement: 23,000 tons
- Operator: United States Navy: 4 in commission
Cape Knox class vehicle cargo ship (AKR 5082)
- Builder: Japan
- Displacement: 29,200 tons
- Operator: United States Navy: 2 in commission
Cape Lambert class vehicle cargo ship (AKR 5077)
- Builder: United States
- Displacement: 30,360 tons
- Operator: United States Navy: 2 in commission
Cape Rise class vehicle cargo ship (AKR 9678)
- Builder: United States
- Displacement: 32,000 tons
- Operator: United States Navy: 3 in commission
Cape Texas class vehicle cargo ship (AKR 112)
- Builder: United States
- Displacement: 24,550 tons
- Operator: United States Navy: 3 in commission
Cape Vincent class vehicle cargo ship (AKR 9666)
- Builder: United States
- Displacement: 28,200 tons
- Operator: United States Navy: 2 in commission
Cape Washington class vehicle cargo ship (AKR 9961)
- Builder: Poland
- Displacement: 53,600 tons
- Operator: United States Navy: 2 in commission
Etna class Logistics Support Vessel
- Builder: Italy
- Displacement: 13,400 tons
- Operator:
  - Marina Militare: 1 in service
  - Hellenic Navy: 1 in service
General Frank S. Besson, Jr. class Logistics Support Vessel (LSV-1)
- Builder: United States
- Displacement: 4,199 long tons
- Operator:
  - United States Navy: 8 in commission
  - Philippine Navy: 2 in commission
Gordon class army prepositioning ship (AKR 296)
- Builder: Denmark / United States
- Displacement: 65,000 tons
- Operator: United States Navy: 2 in commission
Green Wave polar logistics ship (AK 2050)
- Builder: West Germany
- Displacement: 9,500 tons
- Operator: United States Navy
GySgt Fred W. Stockham army prepositioning ship (AKR 3017)
- Builder: Denmark
- Displacement: 55,500 tons
- Operator: United States Navy
Hauge class Marine Corps prepositioning ship (AK 3000)
- Builder: United States
- Displacement: 44,000 tons
- Operator: United States Navy: 5 in commission
Honqui class coastal freighter
- Builder: People's Republic of China
- Displacement: 1,950 tons
- Operator: People's Liberation Army Navy: 7 in service
Kocak class Marine Corps prepositioning ship (AK 3005)
- Builder: United States
- Displacement: 51,612 tons
- Operator: United States Navy: 3 in commission
LCpl Roy M. Wheat Marine Corps prepositioning ship (AK 3016)
- Builder: Soviet Union / United States
- Displacement: 50,570 tons
- Operator: United States Navy
Page class container ship (AKR 4496)
- Builder: United States
- Displacement: 74,500 tons
- Operator: United States Navy: 2 in commission
Qiongsha class troop ship
- Builder: People's Republic of China
- Displacement: 2,150 tons
- Operator: People's Liberation Army Navy: 4 troop ship and 2 hospital ship versions in service
Shughart class army prepositioning ship (AKR 295)
- Builder: Denmark
- Displacement: 54,300 tons
- Operator: United States Navy: 2 in commission
Titus class container/vehicle cargo ship (AK 5089)
- Builder: United States
- Displacement: 48,000 tons
- Operator: United States Navy: 3 in commission
Valkyrien support ship
- Builder: Norway
- Displacement: 3,000 tons
- Operator: Royal Norwegian Navy: 1 in service
Vulcano class Logistics Support Ship
- Builder: Italy
- Displacement: 23,500 tons
- Operator: Marina Militare: 1 on building
Watson class army prepositioning ship (AKR 310)
- Builder: United States
- Displacement: 62,600 tons
- Operator: United States Navy: 8 in commission
Wright class aviation logistics ship (AVB 3)
- Builder: United States
- Displacement: 23,800 tons
- Operator: United States Navy: 2 in commission

Search and Rescue Vessels

San Juan class Search and Rescue Vessel
- Builder: Australia
- Displacement: 540 tons
- Operator: Philippine Coast Guard: 4 in service
Ilocos Norte class Search and Rescue Vessel
- Builder: Australia
- Displacement: 120 tons
- Operator: Philippine Coast Guard: 4 in service

Training ships

See Category:Training ships

Amerigo Vespucci Tall ship
- Builder: Italy
- Displacement: 4,146 tons
- Operator: Marina Militare: 1 in service
Argus Aviation training ship
- Builder United Kingdom
- Displacement 28,081 tons
- Operator: Royal Navy, ( Royal Fleet Auxiliary), 1 in service
Eagle
- Builder: Germany
- Operator: United States Coast Guard
Sagres (A520) Tall ship
- Builder: Blohm & Voss Germany
- Displacement: 1,755 long tons (1,783 tons)
- Operator: Portuguese Navy: 1 in service
- Sister ship to both USCGC Eagle and Gorch Fock
Gorch Fock Tall ship
- Builder: Germany
- Displacement: 2,006 tons
- Operator: German Navy: 1 in service
Horten training ship
- Displacement: 2,535 tons
- Operator: Royal Norwegian Navy
Palinuro Tall ship
- Builder: France
- Displacement: 1,341 tons
- Operator: Marina Militare: 1 in service
Juan Sebatián de Elcano Tall ship
- Displacement: 3,673 tons
- Operator: Spanish Navy
Shiyan training ship
- Displacement: 6,000 tons
- Operator: People's Liberation Army Navy
Zhenghe training ship
- Displacement: 4,500 tons
- Operator: People's Liberation Army Navy
Type 82 training ship
- Builder United Kingdom
- Displacement: 6,000 tons
- Operator: Royal Navy 1 in service

Naval ships and warships in the Late Modern period

Naval ship classes in service submarine auxiliary Operational zones Blue-water navy Brown-water navy Green-water navy Gun placement Broadside Central battery/casemate Turretes

Aircraft carriers	Aircraft cruiser Amphibious assault ship Anti-submarine warfare carrier Balloon carrier CAM ship Escort carrier Fighter catapult ship Fleet carrier Helicopter carrier Light aircraft carrier Merchant aircraft carrier Seaplane tender Submarine aircraft carrier Supercarrier

Battleships	Coastal defence ship Dreadnought Fast battleship Pre-dreadnought battleship Super-dreadnought (Standard-type battleship) Treaty battleship

Cruisers	Armored cruiser Battlecruiser Flight deck cruiser Heavy cruiser Pocket battleship Light cruiser Merchant raider Protected cruiser Strike cruiser Torpedo cruiser Unprotected cruiser

Escort	Aviso Convoy rescue ship Destroyer Destroyer escort Destroyer leader Escort destroyer Frigate Guided missile destroyer Kaibōkan Sloop

Transport	Amphibious transport dock Amphibious warfare ship Attack transport Dock landing ship Landing craft Landing craft carrier Landing Craft Support Landing Ship Heavy Landing ship, infantry Landing Ship Medium Landing Ship, Tank Landing Ship Vehicle Troopship

Patrol craft	Armed boarding steamer Armed yacht Coastal Motor Boat Corvette Gunboat Harbour Defence Motor Launch Motor Launch Naval drifter Naval trawler Ocean boarding vessel Patrol boat Q-ship Steam Gun Boat Submarine chaser Torpedo boat

Fast attack craft	E-boat MAS MGB Missile boat MTB MTM MTSM PT boat Shin'yō

Mine warfare	Danlayer Destroyer minesweeper Mine countermeasures vessel Mine planter Minehunter Minelayer Minesweeper

Command and support	Amenities ship Ammunition ship Auxiliary repair dock Auxiliary ship Collier Combat stores ship Command ship Crane vessel Depot ship Destroyer tender Dispatch boat Fast combat support ship General stores issue ship Hospital ship Naval tugboat Net laying ship Repair ship Replenishment oiler Submarine tender

Submarines	Attack submarine Ballistic missile submarine Coastal submarine Cruise missile submarine Cruiser submarine Deep-submergence vehicle DSRV Fleet submarine Midget submarine U-boat

Miscellaneous	Arsenal ship Barracks ship Breastwork monitor Capital ship Flagship Guard ship Littoral combat ship Monitor River monitor Training ship