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Depot ship

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Title: Depot ship  
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Subject: Repair ship, Amenities ship, List of Empire ships (U–Z), List of shipwrecks in May 1940, Landing craft carrier
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Depot ship

A depot ship is an auxiliary ship used as a mobile or fixed base for submarines, destroyers, minesweepers, fast attack craft, landing craft, or other small ships with similarly limited space for maintenance equipment and crew dining, berthing and relaxation. Depot ships may be identified as tenders in American English. Depot ships may be specifically designed for their purpose or be converted from another purpose.
Submarine depot ship HMAS Platypus with a flotilla of submarines


Depot ships provide services unavailable from local naval base shore facilities. Industrialized countries may build naval bases with extensive workshops, warehouses, barracks, and medical and recreation facilities. Depot ships operating within such bases may provide little more than command staff offices,[1] while depot ships operating at remote bases may perform unusually diverse support functions. Some United States Navy submarine depot ships operating in the Pacific during World War II included sailors with Construction Battalion ratings to clear recreational sites and assemble buildings ashore,[2] while the Royal Navy mobile naval bases included specialized amenities ships to meet recreational needs of British Pacific Fleet personnel.[3]

Services provided by a depot ship depend upon whether typical client warship missions are measured in hours, or days, or weeks. A warship crew may be expected to remain at their stations for missions measured in hours, but longer missions may require provisions for dining, sleeping, and personal hygiene. The crew of small warships may carry individual combat rations and urinate or defecate from the weather deck. Longer missions typically require storage provisions for drinking water and preserved food, and some resting area for the crew, although rest may be limited to a sheltered spot to sit or recline. Cooking may be limited to warming food on an exhaust vent, and buckets may be used for bathing, laundry, and sanitary waste. Habitability standards vary among navies, but client warships large enough to include a head, bunks, a shower, a kitchen stove, refrigerated food storage, a drinking water distillation unit, and a laundry require little more than medical and repair service from a depot ship. Depot ships are similar to repair ships, but provide a wider range of services to a smaller portion of the fleet. Depot ships undertake repair work for a flotilla of small warships, while repair ships offer more comprehensive repair capability for a larger variety of fleet warships. Depot ships also provide personnel and resupply services for their flotilla. Some depot ships may transport their short-range landing or attack craft from home ports to launch near the scene of battle.[4] The following summary of World War II depot ships indicates the range of locations and warships served:

Boom defense depot ships

HMS St. Columba was the depot ship for the boom defense vessels at Greenock. The survey ship HMS Endeavor (J61) served as a depot ship for boom defense in Singapore and the Mediterranean Sea.[5]

Coastal forces depot ships

Requisitioned merchant ships HMS Aberdonian (F74) and Vienna (F138) and the French Belfort (U63) were used as depot ships for Coastal Forces of the Royal Navy. Aberdonian started at Fort William, Scotland, but spent most of the war at Dartmouth, Devon, while Vienna was in the Mediterranean. The Loch-class frigates Loch Assynt (K438) and Loch Torridon (K654) became coastal forces depot ships HMS Derby Haven and Woodbridge Haven, respectively.[5]

Destroyer depot ships

Destroyer depot ship HMS Woolwich
Destroyer tender USS Altair in Trinidad with two destroyers, a gunboat and a Dutch minesweeper alongside.

Escort vessel depot ship

HMS Sandhurst (F92) was a converted merchant ship used as a depot ship for coastal convoy escorts at Dover, Londonderry and Greenock.[8]

Landing craft depot ships

The first landing craft carrier was completed by Japan in 1935.[10] The United States Navy began launching dock landing ships in 1943.[11] The 8,580-ton Beachy Head-class ships HMS Buchan Ness, Dodman Point, Dungeness, Fife Ness, Girdle Ness and Spurn Point were used as depot ships for Ramped Cargo Lighters during the last year of World War II.[12]

Minesweeper depot ships

Nettlebeck, Brommy and Van der Groeben were depot ships for the 1st, 2nd and 3rd R boat flotillas, respectively. The 1st and 3rd flotillas were at Kiel, and the 2nd was at Cuxhaven.[13] HMS Ambitious (F169), Celebrity and St. Tudno served as depot ships for minesweepers. Ambitious was stationed at Scapa Flow, and St. Tudno was at the Nore.[5] Japan requisitioned Chohei Maru, Rokusan Maru and Teishu Maru from civilian service as depot ships for minesweepers.[14]

Motor torpedo boat depot ships

Tsingtau and Tanga were depot ships for the 1st and 2nd E-boat flotillas at Kiel and Hamburg, respectively.[13] Kamikaze Maru, Nihonkai Maru, Shinsho Maru and Shuri Maru were requisitioned from civilian service as depot ships for Japanese Motor Torpedo Boats.[14]

Patrol vessel depot ships

HMS Marshal Soult and the French ships Courbet, Paris, Coucy and Diligente were used as depot ships for vessels patrolling the English Channel after the Second Armistice at Compiègne.[5]

Submarine depot ship HMS Maidstone with submarines alongside
Submarine tender USS Pelias with submarines alongside
Whang Pu is representative of the depot ships requisitioned from civilian service

Submarine depot ships


Some depot ships support a naval base. HMAS Platypus was the base ship at Darwin, Australia during World War II.[8] In the Royal Navy, under section 67 of the Naval Discipline Act 1866, the provisions of the act only applied to officers and men of the Royal Navy borne on the books of a warship. When shore establishments began to become more common it was necessary to allocate the title of the establishment to an actual vessel which became the nominal depot ship for the men allocated to the establishment and thus ensured they were subject to the provisions of the Act.[36]

See also

  • Stone frigate, a shore establishment listed as a ship for the purposes of naval organization.



  1. ^ a b c d e Lenton (1975) pp.391-394
  2. ^ "Euryale". Dictionary of American Naval Fighting Ships. United States Navy. Retrieved 23 March 2014. 
  3. ^ Lenton & Colledge, pp.333&335
  4. ^ Lenton & Colledge, p.333
  5. ^ a b c d e f g h i j k l m Lenton & Colledge, pp.341-348
  6. ^ a b c d e f g h i Silverstone, p.285
  7. ^ a b c d e f Silverstone, p.283
  8. ^ a b c d Lenton & Colledge, p.336
  9. ^ a b c d e f Lenton & Colledge, p.338
  10. ^ Watts, pp.307-309
  11. ^ Silverstone, p.263
  12. ^ Lenton & Colledge, p.350
  13. ^ a b c d e f g Kindell, Don. "FRENCH, POLISH, GERMAN NAVIES, also US SHIPS IN EUROPE, SEPTEMBER 1939". Naval History. Retrieved 22 March 2014. 
  14. ^ a b Watts, p.322
  15. ^ a b c d Silverstone, p.288
  16. ^ a b c d e Lenton & Colledge, p.334
  17. ^ a b Blair, p.821
  18. ^ Blair, p.239
  19. ^ Silverstone, p.287
  20. ^ a b c d e f g h i j Hackett, Bob; Kingsepp, Sander; Cundall, Peter. "SENSUI-BOKAN!". Combined Fleet. Retrieved 21 March 2014. 
  21. ^ Blair, pp.447&533
  22. ^ Blair, pp.131&136
  23. ^ Blair, p.582
  24. ^ Blair, pp.200,227,305,447,766&820
  25. ^ Blair, pp.59,194-195,411&582
  26. ^ Blair, pp.60,168,646&807
  27. ^ Auphan & Mordal, p.390
  28. ^ Kafka & Pepperburg, p.480
  29. ^ Blair, pp.582&646
  30. ^ Blair, pp.109&363
  31. ^ a b Kafka & Pepperburg, p.806
  32. ^ Blair, pp.61&213
  33. ^ Lenton (1968) p.123
  34. ^ Blair, p.847
  35. ^ Blair, pp.225,344,346,533&766
  36. ^ Warlow, Ben (2000). Shore Establishments of the Royal Navy.  
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