Auxiliary ship#Replenishment

File:HMCS Preserver (AOR 510).jpg auxiliary oiler {{HMCS|Preserver|AOR 510|6}} during New York fleet week, 2009]]

File:US Navy 070615-N-4614W-035 Amphibious assault ship USS Essex (LHD 2) conducts a refueling at sea with Australian auxiliary oiler HMAS Sirius (AOR 266) as dock landing ship USS Tortuga (LSD 46) approaches during exercise Talisma.jpg

File:USNS Furman (T-AK-280) underway off Guam 1981.JPEG, 1981]]

File:USS Vulcan AR-5 Norfolk 1992.jpeg

File:Cuxhaven 2005 -Seeschlepper Wangerooge- by-RaBoe 001.jpg, 2005]]

File:Leeuwin at Waterhen Dec2013.JPG

File:US Navy 031009-N-9693M-002 The U.S. Navy Barracks Craft Auxiliary Personnel Lighter Sixty One (APL-61) is moored alongside the U.S. Naval Academy's Dewey Seawall.jpg

{{main|Replenishment oiler}}

One of the most direct ways that auxiliary ships support the fleet is by providing underway replenishment (also known as "replenishment at sea") to major fleet units. This allows the fleet to remain in the same location, with the replenishment vessels bringing up fuel, ammunition, food, and supplies from shore to the fleet wherever it is operating.{{Cite web |last=Marine |first=Mega |date=2023-10-09 |title=Significance of Auxiliary Ship |url=https://www.shipmachineryparts.com/post/significance-of-auxiliary-ship |access-date=2024-07-11 |website=Ship Machinery Parts |language=en}}

Oilers ("replenishment tankers") are vessels specifically designed to bring fuel oil to the fleet, while the earlier Colliers supplied coal-burning steamships. Specific role replenishment vessels include combat stores ships, depot ships, general stores issue ships, and ammunition ships.{{Citation needed|date=June 2023}}

Tenders are specifically designed to support a type of smaller naval unit, like submarines, destroyers, and seaplanes, providing a mobile base of operations for these units: specifically destroyer tenders, submarine tenders, seaplane tenders, torpedo boat tenders.{{Cite web|url=http://shipbuildinghistory.com/navalships/as.htm|title=Submarine Tenders (AS)|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ago.htm|title= Other Auxiliaries(AGB, AGC, AGDS, AGEH, AGER, AGF, AGM, AGMR, AGP, AGR, AGTR)|website=shipbuildinghistory.com|access-date=2019-01-23}}

{{main|Attack transport}}

Supporting front-line operating bases requires immense transportation capacity. Transport ships are often converted merchant ships simply commissioned (APA, APD, APH, APV){{Technical inline|date=June 2023}} into naval service. Tankers are transports specifically designed to ship fuel to forward locations. Transport ships are often employed not only carrying cargo for naval support but are in support of all forces of a nation's military (AK, AKA, AKN, AKR, AKS). In particular, troopships and attack transports are used to carry a large number of soldiers to operational theatres. Some transport ships are highly specialized, like the ammunition ships employed by the US Navy.{{Cite news|date=2011-02-01|title=Royal Fleet Auxiliary ship makes last Plymouth call|language=en-GB|work=BBC News|url=https://www.bbc.com/news/uk-england-cornwall-12340832|access-date=2021-09-18}} Large ocean tugs (AT, ATO, ATF, ATA, ATR){{Technical inline|date=June 2023}} are used to tow large auxiliary ships, like barges, floating repair docks, and floating cranes in the open sea, also disabled ships.{{refn|{{Cite web|url=http://shipbuildinghistory.com/smallships/auxat.htm|title=Ocean Tugs (AT, ATO, ATF, ATA, ATR)|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ao.htm|title=Oilers AO|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ac.htm|title=Combat Logistics Resupply Ships AC AE AF AFS AKE AOE AOR|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ak.htm|title=Cargo Ships AK AKA AKN AKS|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/aog.htm|title=Gasoline Tankers AOG|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ad.htm|title=Destroyer Tenders AD|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/av.htm|title=Aviation Support Ships AV AVP AVS|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ag.htm|title=Miscellaneous Auxiliaries AG|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/ap.htm|title=Troop Transports (AP)|website=shipbuildinghistory.com|access-date=2019-01-23}}{{Cite web|url=http://shipbuildinghistory.com/navalships/apa.htm|title=Attack and Other Transports (APA, APD, APH, APV)|website=shipbuildinghistory.com|access-date=2019-01-23}}}}

{{main|Repair ship}}

Repairing ships at sea or in conflict areas is important as it allows these vessels to return to service more quickly, while also increasing the chance of survival for ships critically damaged in battle. Repair vessels (US Navy: AR, ARB, ARC, ARG, ARH, ARL, ARV){{Technical inline|date=June 2023}} range from small equipment ships known as Auxiliary repair docks, to the larger Auxiliary floating drydocks, there are also Aircraft repair ships that specialize in repair of naval aircraft.{{cite web|url=http://www.shipbuildinghistory.com/smallships/auxafd.htm|title=Floating Dry-Docks (AFDB, AFDM, AFDL, ARD, ARDM, YFD)|date=30 April 2015|publisher=shipbuildinghistory.com|access-date=8 January 2019}}

{{main|Type V ship|Type B ship}}

Harbor support is a critical support role, with various types of vessels including tugboats, barges, lighter barges, derrick-crane vessels, and others used to move ships and equipment around the port facilities, and depot ships and tends to service ships currently in the harbor. These vessels also help maintain the harbor by dredging channels, maintaining jetties and buoys, and even providing floating platforms for port defenses.{{Citation needed|date=June 2023}}

In US Navy, tugboats are type YT, YTB, YTM, YTL or a Type V ship.{{Cite web|url=http://shipbuildinghistory.com/smallships/yt2.htm|title=Yard Tugs Wartime YT YTB YTM YTL|website=shipbuildinghistory.com|access-date=2019-01-23}} and barges are classified as a Type B ship or YF, YFN, YFR, or YFRN.{{Cite web|url=http://shipbuildinghistory.com/smallships/yf2.htm|title=Freight Lighters Wartime YF YFN YFND YFR YFRN YFRT|website=shipbuildinghistory.com|access-date=2019-01-23}}

Radar picket to increase the radar detection range around a force. Communications Relay Ships (AGMR) are floating communications stations. Tracking ships or Range Instrumentation Ships (AGM) are equipped with antennas and electronics to support the launching and tracking of missiles and rockets. Command ship (AGF) are flagships of the commander of a fleet. Wind-class icebreaker (AGB WAGB) are support ships. Rescue and salvage ship and Submarine rescue ship (ASR) for surface support ship for ship and submarine rescue. Barracks ships or Auxiliary Personal Living ships, (APL) are vessels-barges for service men to live on.{{Citation needed|date=June 2023}}

A wide variety of vessels are employed as Technical Research Ships(AGTR), Tracking Ships(AGM), Environmental Research Ships (AGER), Hydrofoil Research Ships (AGEH), and Survey Vessels, primarily to provide a navy with a better understanding of its operating environment or to assist in testing new technologies for employment in other vessels.{{Cite web|url=http://shipbuildinghistory.com/navalships/ago.htm|title=Other Auxiliaries AGB, AGC, AGDS, AGF, AGM, AGMR, AGP, AGR|website=shipbuildinghistory.com|access-date=2019-01-23}}

{{main|Hospital ship}}

Hospital ships are able to provide medical care in remote locations to personnel.{{Cite web|last=Custodio|first=Jonathan|title=U.S. transport ship and field hospitals heading to Haiti for quake relief|url=https://www.politico.com/news/2021/08/19/us-transport-ship-haiti-aid-506342|access-date=2021-09-18|website=POLITICO|language=en}}

{{main|List of unclassified miscellaneous vessels of the United States Navy}}

The US Navy also used an unclassified miscellaneous auxiliary ship classification in which the unclassified miscellaneous auxiliary ship classification is IX. An unclassified miscellaneous auxiliary ship can be a new ship without a classified role or a ship that does not fit into a standard category or a ship that had been removed from its classification.[https://www.militaryperiscope.com/weapons/ships/auxiliary/unclassified-miscellaneous-ix-units/overview/ Overview — UNCLASSIFIED MISCELLANEOUS (IX) Units]militaryperiscope.com[http://www.navsource.org/archives/09/46/46idx.htm Unclassified auxiliary ships] navsource.org[https://www.shipscribe.com/usnaux/IX3/IX3type.html Unclassified (IX): Special Types]shipscribe.com

• List of auxiliaries of the United States Navy
• List of auxiliary ship classes in service
• Service Squadron
• US Naval Advance Bases

{{Reflist}}

• {{cite book|title=Dictionary of Naval Terms |url=https://books.google.com/books?id=6mGLsY0G1O8C&q=auxiliary+ship |last1=Cutler |first1=Deborah W. |last2=Cutler |first2=Thomas J. |edition=6 |publisher=Naval Institute Press |date=2005 |isbn=978-1591141501}}
• {{cite book|title=Academic Press Dictionary of Science and Technology |url=https://archive.org/details/academicpressdic00morr |url-access=registration |page=[https://archive.org/details/academicpressdic00morr/page/192 192] |quote=role of auxiliary vessels. |first=Christopher G. |last=Morris |publisher=Academic Press |edition=1 |date=1992 |isbn=978-0127356327}}

• {{Commons category-inline}}

{{Warship types of the 19th & 20th centuries}}

{{Authority control}}

{{DEFAULTSORT:Auxiliary Ship}}

Category:Ship types