This list is incomplete; you can help by adding missing items. (June 2022)
Wanamassa (YTB-820)
Ships of the United States Navy
Ships in current service
Ships grouped alphabetically
Ships grouped by type

This is a list of yard and district craft of the United States Navy. It covers the various types of craft and ships that support the bases and harbors of the United States Navy. The hull classification symbols for these craft begin with (Y).

Ship status is indicated as either currently active [A] (including ready reserve), inactive [I], or precommissioning [P]. Ships in the inactive category include only ships in the inactive reserve, ships which have been disposed from US service have no listed status. Ships in the precommissioning category include ships under construction or on order.

Historical overview

This list demonstrates that the US Navy constantly recycles and repurposes its small craft for new roles. Some craft on this list have had as many as six such conversions in their history. Some of these conversions have been surprising from an environmental viewpoint, such as the conversion of fuel oil barges into water barges. Some conversions have been surprising from an economic viewpoint, such as the simultaneous conversions of open barges to covered barges during the conversions of covered barges to open barges, which can be justified only by relatively high transportation costs.

The District auxiliary, miscellaneous (YAG) designation has been used as a cover for at least two ships employed in classified tests of biological, chemical, and nuclear weapons (aka WMD).

Some of these vessels have held prior or later classifications as unclassified miscellaneous (IX), or more rarely as auxiliaries miscellaneous (AG, T-AG).

Ash barges (YA)

District auxiliary, miscellaneous (YAG)

For similar lists of 'miscellaneous' ships see

List of auxiliaries of the United States Navy § Miscellaneous ships (AG, T-AG)


List of unclassified miscellaneous vessels of the United States Navy (IX)

Radar picket ships (YAGR)

Further information: Radar picket § Converted merchant ships

Guardian-class radar picket ship

All Guardian-class ships were reclassed as AGR in 1958; they were originally intended to be classed as District auxiliaries, miscellaneous (YAG) - see YAG-41 through YAG-44 - but this was not done.

Open barges (YC, YCK)

The YCK hull symbol denoted a wooden barge.

Coaling derricks (YCD)

Car floats (YCF)

Further information: car float

Aircraft transportation barges (YCV)

Floating derricks (YD)

Further information: Crane vessel

Degaussing craft (YDG)

Main article: List of mine warfare vessels of the United States Navy § Degaussing craft (YDG)

Diving tenders (YDT)

Ammunition barges (YE)

Covered barges (YF, YFN)

YF barges are self-propelled, YFN barges are not.[51]

Hull numbers 1 through 256 were built before World War II. [52]

Hull numbers 257 through 1153 were built during World War II.[53][54]

Hull numbers starting with 1154 were built after World War II.[57]

Yard ferry boats or launches (YFB)

Yard floating drydocks (YFD)

Further information: Auxiliary floating drydock § Yard Floating Dock (YFD)

All YFDs were reclassified as AFDMs in 1945 (see List of auxiliaries of the United States Navy § Medium auxiliary floating dry docks (AFDM)).

Large covered barges, non-self propelled (YFNB)

Dry dock companion craft, non-self propelled (YFND)

Barges, special purpose, non-self propelled (YFNX)

Floating power barges (YFP)

Refrigerated covered barges (YFR, YFRN)

YFR barges are self-propelled, YFRN barges are not.

The YFR and YFRN hull numbers are part of the YF and YFN sequence.

Range tenders (YFRT)

Torpedo transportation barges (YFT)

Harbor utility craft (YFU)

Most if not all of the early YFU vessels were LCUs which had been retired from amphibious duties due to age.

YFU-71-class: 11 "Skilak" lighters purchased as Commercial off-the-shelf for the Vietnam War[62]

Garbage barges (YG, YGN)

YG barges are self-propelled, YGN barges are not.

Ambulance boats / Small medical support vessels (YH)

Main article: List of United States Navy hospital ships § Ambulance boats and transports

Houseboats (YHB)

Salvage lift craft, heavy (YHLC)

Heating scows (YHT)

This section is empty. You can help by adding to it. (June 2022)

Open landing barges (YLA)

This section is empty. You can help by adding to it. (June 2022)

Salvage lift craft (YLC)

Salvage lift craft, light (YLLC)

Dredges (YM, YMN)

Further information: Dredging

YM dredges are self-propelled, YMN dredges are not.

Mud scows (YMD)

Salvage lift craft medium (YMLC)

Motor mineplanters (YMP)

Main article: List of mine warfare vessels of the United States Navy § Motor mineplanters (YMP)

Auxiliary motor mine sweepers (YMS)

Main article: List of mine warfare vessels of the United States Navy § Auxiliary motor mine sweepers (YMS)

Yard motor tugs (YMT)

Yard net tenders (YN)

Further information: Net laying ship § US Navy

All specially-built yard net tenders were reclassified in 1944 as auxiliary net laying ships, see List of auxiliaries of the United States Navy § Net laying ships (AN) for the reclassification result. The 24 impressed tugboats were reclassed as Net tender tugs (YNT), later some as tugboats (YTB or YTL).

Aloe-class net laying ships

The 24 impressed commercial tugboats.

Ailanthus-class net laying ships

Cohoes-class net laying ships

Net gate craft (YNG)

Net tender tugs (YNT)

All these ships were former Yard net tenders (YN)

Fuel oil barges (YO, YON)

YO barges are self-propelled, YON barges are not.

Gasoline barges (YOG, YOGN)

YOG barges are self-propelled, YOGN barges are not.

Oil storage barges (YOS)

Patrol craft (YP)

Further information: Yard patrol boat

During World War II many private fishing and United States Fish & Wildlife Service (US FWS) vessels were pressed into naval service as patrol craft. A small number would be modified for delivering refrigerated food to small isolated island bases, most without any reclassification.

Later purpose-built yard patrol craft would be assigned mainly to train US Naval Academy and US Merchant Marine Academy midshipmen.

Floating pile drivers (YPD)

Pontoon storage barges (YPK)

Floating workshops (YR)

Repair and berthing barges (YRB)

Repair, berthing and messing barges (YRBM)

Submarine rescue chambers (YRC)

Floating dry dock workshops, hull (YRDH)

Floating dry dock workshops, machine (YRDM)

Covered barges repair (YRL)

Radiological repair barges (YRR)

Salvage craft tenders (YRST)

Stevedoring barges (YS)

Yard seaplane derricks (YSD)

YSD-11-class crane ship

Salvage barges (YSP)

Sludge removal barges (YSR)

Yard tugs (YT)

Many of these tugs were later assigned YTB, YTL, or YTM classifications.




Large harbor tugs (YTB)


Small harbor tugs (YTL)

Medium harbor tugs (YTM)

Torpedo trials craft (YTT)

Further information: Torpedo trials craft

Cape Flattery-class

Drone aircraft catapult control craft (YV)

Catapult barges (YVC)

This section is empty. You can help by adding to it. (June 2022)

See also: List of auxiliaries of the United States Navy § Seaplane catapult, light (AVC)

Water barges (YW, YWN)

YW barges are self-propelled, YWN barges are not.

Unclassified vessels

Barrier boats

Barrier Boat (19BB)

The 19 foot, 9.5 ton Barrier Boats (19BB) were built to deploy and maintain port security booms surrounding Navy ships and installations in port. A total 13 unnamed boats were first delivered in 2003.[105]

Other Barrier Boats are 30-foot Modutech work boats.[106]


See also

Similar United States Maritime Administration (MARAD) designations:


  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z "Casualties Navy and Coast Guard Ships - Continued". Public1.nhhcaws.local.
  2. ^ YAG-1
  3. ^ YAG-2
  4. ^ YAG-3
  5. ^ YAG-4
  6. ^ YAG-5
  7. ^ YAG-6
  8. ^ YAG-7
  9. ^ YAG-8
  10. ^ YAG-9
  11. ^ a b c d e f g YAG
  12. ^ YAG-11
  13. ^ YAG-12
  14. ^ YAG-13
  15. ^ YAG-14
  16. ^ YAG-15
  17. ^ YAG-16
  18. ^ YAG-17
  19. ^ YAG-18
  20. ^ YAG-19
  21. ^ YAG-20
  22. ^ YAG-21
  23. ^ YAG-22
  24. ^ YAG-23
  25. ^ YAG-24
  26. ^ YAG-25
  27. ^ YAG-26
  28. ^ YAG-27
  29. ^ YAG-28
  30. ^ YAG-29
  31. ^ YAG-30
  32. ^ YAG-31
  33. ^ YAG-32
  34. ^ YAG-33
  35. ^ YAG-34
  36. ^ YAG-36
  37. ^ YAG-37
  38. ^ YAG-38
  39. ^ a b c d e f g Martin, Edwin J; Rowland, Richard H (April 1, 1982). Castle Series, 1954 (PDF). Washington DC: Defense Nuclear Agency. OCLC 831905820. DNA 6035F – via Defense Technical Information Center.
  40. ^ a b c d e "Operation WIGWAM, Report of Commander, Task Group 7.3" (PDF). Defense Technical Information Center. July 22, 1955. Archived (PDF) from the original on December 1, 2021. Retrieved December 1, 2021.
  41. ^ a b c "Ships Associated with SHAD Tests". Archived from the original on July 26, 2013. Retrieved 21 September 2012.
  42. ^ "Class: Unnamed (EAG 155, C4-S-1a)".
  43. ^ YAG-60
  44. ^ YAG-61
  45. ^ YAG-62
  46. ^ YAG-87
  47. ^ a b "Fleet Oiler (YO) Photo Index".
  48. ^ "Civilian Vessel".
  49. ^ a b "NO NAME (YPD 45) (Floating Pile Driver)". Retrieved 6 July 2022.
  50. ^ "YCK-8 (1943)". Retrieved 6 July 2022. On December 13th, 1943, US open cargo lighter YCK-8 sinks (cause unspecified) off Key West, Florida.
  51. ^ "YFN - Steel Covered Lighter".
  52. ^ "Freight Lighters Pre-War YF YFN YFND YFR YFRN YFRT". Retrieved 6 July 2022.
  53. ^ a b c "Freight Lighters Wartime YF YFN YFND YFR YFRN YFRT". Retrieved 6 July 2022.
  54. ^ "NavSource Auxiliary Ship Photo Archive".
  55. ^ a b c "NO NAME (YPD 46) (Floating Pile Driver)". Retrieved 6 July 2022.
  56. ^ a b c "USS YFR-1152 ex YF-1152". Retrieved 6 July 2022.
  57. ^ "Freight Lighters Post-War YF YFN YFND YFR YFRN YFRT". Retrieved 6 July 2022.
  58. ^ "Leeward (YFB) Ferryboat or Launch (S-P)". Naval Vessel Register. Retrieved 5 September 2012.
  59. ^ "Windward (YFB93)". Naval Vessel Register. Retrieved 5 September 2012.
  60. ^ "YFR-443 ex YF-443". Retrieved 6 July 2022.
  61. ^ "YFR-451". Retrieved 6 July 2022.
  62. ^ "The Saga of the YFU-79 & the U-Boat Sailors of I Corps – The Mobile Riverine Force Association". Retrieved 6 July 2022.
  63. ^ "YG-5". public2.nhhcaws.local.
  64. ^ "The Heroism of YG-17 at Pearl Harbor". Pearl Harbor. April 4, 2019.
  65. ^ "Garbage Lighter (YG)".
  66. ^ "NH 74186 US Navy Garbage Lighter (YG-51)". public2.nhhcaws.local.
  67. ^ "NO NAME (YG 53) (Garbage Lighter)". Retrieved 6 July 2022.
  68. ^ "Garbage Lighter (YG)".
  69. ^ "YHB-10". public1.nhhcaws.local.
  70. ^ "Miscellaneous Photo Index".
  71. ^ "CRILLEY (YHLC 1) (Salvage Life Craft)". Retrieved 6 July 2022.
  72. ^ "YHLC".
  73. ^ "NO NAME (YLC 2) (Salvage Lift Craft)". Retrieved 6 July 2022.
  74. ^ "Landing Craft Tank Photo Index".
  75. ^ "Miscellaneous Photo Index".
  76. ^ a b "Miscellaneous Photo Index".
  77. ^ "Miscellaneous Photo Index".
  78. ^ "Miscellaneous Photo Index".
  79. ^ "SEABEE (YM 38) (Dredge)". Retrieved 6 July 2022.
  80. ^ "19-N-24347 USS YNG-1". Public1.nhhcaws.local.
  81. ^ World War II Shipwrecks of the Philippines, by Tom Bennett
  82. ^ "Fleet Oiler (YO) Photo Index".
  83. ^ "Naval Losses WWII".
  84. ^ "Official Chronology of the US Navy in WWII". Retrieved 4 January 2014.
  85. ^ The Official Chronology of the U.S. Navy in World War II, By Robert Cressman, YO-159
  86. ^ "Fleet Oiler (YO) Photo Index".
  87. ^ "Republic of Viet-Nam Navy (VNN): List of Ships and Crafts" (PDF). Archived from the original (PDF) on 2011-07-25. Retrieved 6 July 2022.
  88. ^ "Yard Oiler (YOG) Photo Index".
  89. ^ "Yard Oiler (YOG) Photo Index".
  90. ^ "19-N-23827 USS YP-29". Public2.nhhcaws.local.
  91. ^ "YP-72". Public1.nhhcaws.local.
  92. ^ "Barcelo (IX-199)"
  93. ^ Naval History And Heritage Command (26 June 2015). "Brave". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 1 September 2019.
  94. ^ "NO NAME (YPD 36) (Floating Pile Driver)". Retrieved 6 July 2022.
  95. ^ "NO NAME (YPD 37) (Floating Pile Driver)". Retrieved 6 July 2022.
  96. ^ a b c d e f g "Repair and Berthing Barges YR YRB YRBM YRDH YRDM YRR". Retrieved 6 July 2022.
  97. ^ "YRBM".
  98. ^ a b "Miscellaneous Photo Index".
  99. ^ a b World War II Wrecks of the Philippines
  100. ^ Operation Dominic I (PDF) (DNA6040F), Washington, DC: Defense Nuclear Agency, 1983, archived from the original (PDF) on 23 August 2012, retrieved 12 January 2014
  101. ^ "Landing Ship Medium LSM".
  102. ^ "Landing Ship Medium LSM-446".
  103. ^ "Turner I (Destroyer No. 259)". Dictionary of American Naval Fighting Ships.
  104. ^ "YW-114". Retrieved 6 July 2022.
  105. ^ Roza, David (6 October 2020). "Meet the Navy's most adorable boat". Task & Purpose.
  106. ^ Tenorio, Nicholas (February 3, 2023). "The Barrier Boats of NSA Souda Bay Port Operations". America's Navy.

"Ship Abbreviations and Symbols - Y".

Museum ship