Video

Patreon 36: Repair Ships, Depot Ships, Tenders and Stores Ships...

Study Patreon 36: Repair Ships, Depot Ships, Tenders and Stores Ships..., a Dr. Alex Clarke video from 25 Nov 2021, with 82 time notes. Topics include Depot Ships, Naval Logistics, Naval Maintenance.

Date
Runtime3:33:11
Guide points82 time notes

Time notes

  1. 7:52
    Why fleets need repair and support ships

    The opening definition separates repair ships, depot ships, store ships, and tenders while identifying the common problem they solve: small warships cannot carry every spare or specialist they need.

    Chapter
  2. 14:22
    Age-of-sail store ships and self-repair

    Store ships carried food, water, sailcloth, spars, and other essentials, but sailing warships also had enough crew, time, and hull space to perform much of their own repair work.

    Chapter
  3. 15:53
    Warrant officers as a shipboard maintenance system

    Carpenters, sailmakers, boatswains, and pursers connected repairs, stores, and dockyard training in the Royal Navy's age-of-sail support system.

    Notable Point
  4. 20:05
    Wood stocks and everyday repair work aboard sailing ships

    Sailing ships kept rough timber and long spars accessible on the upper deck, where carpenters could inspect, preserve, and shape them for running repairs.

    Notable Point
  5. 22:48
    From powder monkey to a skilled naval trade

    Training as a sailmaker, carpenter, or gunner offered boy sailors a route from powder-carrying work into better-paid and professionally valued trades.

    Notable Point
  6. 24:36
    QuestionWhat duties did a ship's carpenter have during battle?Answer

    The carpenter belonged to the damage-control effort, but carpenters on smaller ships could also lead boarding parties because they were skilled with heavy axes.

    Q&A
  7. 25:49
    QuestionHow often did crews have to perform the ship's most unpopular maintenance jobs?Answer

    Bilge pumping was done daily and sometimes two or three times a day, while sails and stores also required daily inspection.

    Q&A
  8. 27:04
    Prize crews and promotion for ship's carpenters

    Repairing a captured ship and bringing it home as acting carpenter could accelerate a carpenter's mate toward his own warrant.

    Notable Point
  9. 28:01
    QuestionWhat is a spar on a sailing ship?Answer

    It is one of the long timbers associated with the mast on which the sails are carried.

    Q&A
  10. 30:15
    QuestionWere ship's cats a danger to stored sails?Answer

    The larger danger was rats eating sailcloth, so carpenters and sailmakers valued cats for protecting their stores.

    Q&A
  11. 31:12
    QuestionWere auxiliary supply operations carried out at sea in the age of sail?Answer

    Yes. Boats handled ordinary transfers, while tackles, spare spars, and a mast could be rigged into lifting gear for heavier stores.

    Q&A
  12. 32:05
    Why gun carriages dominated post-battle repair work

    Damaged gun carriages could consume more carpenter effort than hull repairs, forcing ships to carry timber and sometimes heat wood aboard.

    Notable Point
  13. 35:28
    QuestionDid other navies pioneer the same kinds of shipboard maintenance and support?Answer

    Yes. Several European navies developed similar practices, but the Royal Navy sustained them with unusual administrative continuity, funding, and national reliance on sea power.

    Q&A
  14. 37:48
    USS Celtic and mobile supply

    USS Celtic illustrates how a ship formally classed as a store ship could take on supply, maintenance, and humanitarian work over a long service life.

    Notable Point
  15. 40:04
    Standardization and the rise of shore support

    Mixed machinery and coal dependence made shore bases essential until standardization allowed mobile support ships to carry a practical range of spares.

    Chapter
  16. 43:45
    Kamchatka and a fleet without friendly ports

    The Russian repair ship Kamchatka illustrates the severe support problem created when the Baltic Fleet sailed around the world toward the Russo-Japanese War without a chain of friendly bases.

    Notable Point
  17. 44:30
    QuestionWas a ship's carpenter also a backup surgeon or blacksmith?Answer

    Carpenters were repair specialists who could do occasional smithing and needed enough ironworking skill for their work.

    Q&A
  18. 46:40
    QuestionDid a repair or support ship accompany the Great White Fleet?Answer

    Yes. The store ship USS Celtic was one of the auxiliaries that followed the fleet.

    Q&A
  19. 47:11
    QuestionDid people in the ironclad era think emerging technologies would make naval ships unnecessary?Answer

    Yes, such claims recur. Torpedoes, submarines, and other innovations changed warships and warfare without making ships irrelevant.

    Q&A
  20. 49:19
    Forward foundries and the spare-parts problem

    Large overseas bases tried to cast, heat-treat, or repair machinery parts locally because waiting for a replacement from home could immobilize a ship for months.

    Notable Point
  21. 50:39
    The Great White Fleet's logistics lesson

    The voyage exposed weak American fleet logistics and dependence on British coal transport, reinforcing the need for a US Navy fleet train of colliers, tankers, and supply ships.

    Notable Point
  22. 52:11
    QuestionDid Royal Navy overseas stations such as the China Station have their own auxiliaries?Answer

    Usually they had an auxiliary or similar support ship, often an older cruiser converted to carry stores and provide local services.

    Q&A
  23. 53:06
    HMS Ambrose and the depot-ship role

    The conversion of HMS Ambrose from a cargo liner to a submarine and destroyer depot ship shows how a mothership could provide the space a flotilla lacked.

    Chapter
  24. 58:22
    QuestionWhere does the naval term tender come from?Answer

    It describes a vessel that tends to, supplies, or cares for another ship, flotilla, or service rather than one rigid hull type.

    Q&A
  25. 1:00:54
    QuestionDid naval tenders also provide recreation for the crews they supported?Answer

    Yes. Some tenders included recreational facilities such as cinemas alongside their other support functions.

    Q&A
  26. 1:01:07
    Treaty limits and USS Medusa

    USS Medusa represents a Pacific answer to limited shore infrastructure: if new bases could not be developed, a fleet had to bring repair capacity with it.

    Chapter
  27. 1:06:44
    HMS Vindictive as a converted depot ship

    HMS Vindictive provides a named example of the Royal Navy converting an older cruiser into a depot ship rather than building every support vessel from scratch.

    Notable Point
  28. 1:08:24
    QuestionHad the Type 83 destroyer already received an official design?Answer

    No. The government had released no official design at the time, so the circulating images were personal concepts.

    Q&A
  29. 1:10:01
    HMS Resource and the cost of specialization

    HMS Resource and USS Medusa were valuable but expensive answers to a question larger warships partly solved with their own workshops.

    Notable Point
  30. 1:15:22
    QuestionWhat might a modern battleship armed mainly with missiles look like?Answer

    The Kirov-class battlecruisers, especially Pyotr Velikiy, provide the closest existing guide to the idea.

    Q&A
  31. 1:16:20
    QuestionWould vulnerable Cold War bases make repair ships more important?Answer

    Potentially, but Cold War planning often assumed a short conventional or nuclear conflict and therefore underinvested in the sustainment needed for a long war.

    Q&A
  32. 1:20:39
    QuestionAre repair ships likely to return to modern fleets?Answer

    Dedicated repair ships are unlikely to return quickly unless fleets grow, while forward tenders combining repair, headquarters, and personnel functions remain useful in a long war.

    Q&A
  33. 1:24:16
    Converted tenders as affordable long-war preparation

    Converting viable cruisers into tenders saved money, supplied the space small combatants lacked, and offered some protection if an enemy attacked the support fleet.

    Notable Point
  34. 1:25:44
    QuestionCould a landing-platform dock serve as a repair ship for uncrewed surface vessels?Answer

    Yes. An LPD could use its dock, lifts, gantries, and standardized containers to receive, repair, rearm, and return drones to service.

    Q&A
  35. 1:27:44
    HMS Unicorn as forward aviation support

    HMS Unicorn was designed to supply, repair, and redistribute aircraft so carrier groups could preserve their aviation strength far from shore facilities.

    Chapter
  36. 1:29:10
    QuestionWould a repair ship be a useful peacetime force multiplier?Answer

    Yes, especially on prolonged deployments, but nearby shore facilities make the additional ship difficult to justify in a peacetime budget.

    Q&A
  37. 1:29:35
    QuestionDid the Royal Navy need a relief force after the Falklands fighting ended?Answer

    Yes. A group led by HMS Bristol went south to relieve ships that were wearing out and needed to return home while the postwar presence continued.

    Q&A
  38. 1:31:11
    QuestionWhat would a never-built Royal Navy SLBM depot ship have been used for?Answer

    It could have provided dispersed maintenance and support if British submarine bases were threatened, with possible use beyond its SSBN mission.

    Q&A
  39. 1:35:05
    Xanthus-class heavy fleet repair ships

    The Xanthus class was a rare purpose-built heavy repair-ship class whose immense workshop capacity saw limited wartime use but later value in Korea.

    Notable Point
  40. 1:42:57
    QuestionWhat did HMS Unicorn lack compared with a proper fleet carrier?Answer

    She was slower and optimized for support, but she retained many carrier capabilities; her auxiliary classification depended more on intended role and treaty law than on appearance.

    Q&A
  41. 1:47:52
    QuestionWhat did the inside of a repair ship look like?Answer

    It contained many machinery and craft workshops like those inside HMS Belfast, but repeated on the scale of an entire support ship.

    Q&A
  42. 1:49:19
    British defence spending and the NATO central front

    The loss of CVA-01 is linked to a policy of seeking maximum diplomatic effect from limited defence spending by prioritizing NATO's central front.

    Notable Point
  43. 1:53:29
    QuestionWhy did a forward aviation support ship need its own flight deck?Answer

    It allowed maintainers to test repaired aircraft and let serviceable or replacement aircraft fly directly back to operational carriers.

    Q&A
  44. 1:54:12
    QuestionWhat difference would three HMS Unicorn-class support ships have made in 1943?Answer

    They could have eased the carrier shortage by assigning a dedicated aircraft-repair and replacement ship to each armored fleet carrier.

    Q&A
  45. 1:56:26
    USS Vulcan and Japanese forward repair

    USS Vulcan's long service and Japan's Akashi demonstrate how forward repair capacity protected destroyer readiness and scarce experienced crews in Pacific operations.

    Chapter
  46. 1:59:39
    QuestionWould a modern version of HMS Unicorn be useful?Answer

    Yes, if the fleet operated enough aircraft to keep it useful; an LHD-like design would be the likely modern form.

    Q&A
  47. 1:59:58
    Modular replenishment reduces demand for repair ships

    Modern replenishment ships can deliver modular replacement parts and materials to the workshops already aboard larger warships, reducing the demand for a separate repair hull.

    Notable Point
  48. 2:03:55
    QuestionWhen did navies begin relying on purpose-built repair ships, and why were they uncommon in peacetime?Answer

    They became important mainly during the Second World War; in peacetime, onboard workshops, depot ships, and shore bases were usually cheaper substitutes.

    Q&A
  49. 2:08:08
    QuestionCould surviving Courageous-class carriers have been converted into aircraft repair ships?Answer

    Probably. They were larger and better suited than Furious, although their condition would determine whether conversion remained worthwhile.

    Q&A
  50. 2:10:04
    QuestionHow large was HMS Unicorn's operational fighter force?Answer

    A rough later estimate gives eighteen fighters plus eighteen strike aircraft, or about thirty-six fighters once types such as the Seafire could cover both roles.

    Q&A
  51. 2:10:45
    British repair versus American aircraft replacement

    American carrier logistics could emphasize a conveyor belt of replacement aircraft and island repair facilities, while British distance from industry encouraged more intensive repair close to the fleet.

    Notable Point
  52. 2:14:01
    QuestionWhich Second World War naval aircraft were especially maintenance-heavy?Answer

    The Seafire was particularly demanding, with the Corsair also intensive; the Swordfish was simpler and the Hellcat was a practical aircraft to maintain.

    Q&A
  53. 2:15:11
    QuestionCould an earlier HMS Unicorn have accompanied Force Z?Answer

    Possibly. An undelayed Unicorn could have been available in early 1941 and might have supplied Force Z with fighter support.

    Q&A
  54. 2:18:08
    A Seafire's carrier adaptation under strain

    A photograph of a Seafire caught in a deck barrier illustrates how closely the naval fighter still resembled its minimally adapted Spitfire parent.

    Notable Point
  55. 2:21:42
    What a multi-role support ship could replace

    A common RFA support hull could cover carrier sustainment, Bay-class landing support, hospital work, and littoral-strike missions if its design accepts the tradeoffs between those roles.

    Chapter
  56. 2:23:20
    Why amphibious command still needs dedicated LHDs

    Replacing Albion and Bulwark requires naval-standard LHDs with protected command spaces, troop and vehicle capacity, and the ability to lead a task group close to shore.

    Chapter
  57. 2:29:33
    QuestionWould using one common hull for hospital and command roles blur the line between them?Answer

    Not if one ship is clearly assigned and marked for the hospital role rather than trying to perform both functions at once.

    Q&A
  58. 2:29:56
    QuestionWas a CAM Hurricane heavily modified for use at sea?Answer

    No. The only relevant change was fitting the aircraft to its launch carriage.

    Q&A
  59. 2:30:49
    QuestionHow many multi-role support ships would be needed for a credible fleet?Answer

    A pool around twelve could cover several support roles and keep multiple ships available through normal force-generation cycles.

    Q&A
  60. 2:34:47
    QuestionHow would a submarine tell that a multi-role support hull was operating as a hospital ship?Answer

    The ship should broadcast and display its protected status, with the submarine using visual confirmation if necessary; compliance by both sides remains essential.

    Q&A
  61. 2:38:13
    QuestionWhy did other navies not adopt Britain's forward aviation support-ship concept?Answer

    Britain's exceptionally long Pacific supply chain rewarded forward repair, while the United States could rely more heavily on mass production and a steady flow of replacement aircraft.

    Q&A
  62. 2:40:19
    The scale of logistics support at Okinawa

    The support force behind Okinawa included oilers, ammunition ships, cargo ships, hospital ships, repair ships, floating docks, and tugs alongside combatant formations.

    Notable Point
  63. 2:43:43
    QuestionWhy not buy smaller corvettes or carriers to obtain more hulls?Answer

    Because governments may authorize a fixed number of ships rather than a fixed tonnage; smaller designs can therefore mean the same hull count with less capability.

    Q&A
  64. 2:48:15
    Modern depot ships for smaller crews

    A depot ship becomes useful when small, automated crews lack the space or skills to repair themselves while operating far from home.

    Notable Point
  65. 2:50:45
    QuestionWhere is the line between a corvette, a frigate, and a destroyer?Answer

    The boundaries are blurred, especially as armament grows, which supports a clearer capability-based rating system.

    Q&A
  66. 2:51:13
    A 48-escort Royal Navy force model

    A personal force model assigns twelve ships to each of four escort classes, dividing global-presence work from six heavier carrier, amphibious, or surface-action groups.

    Notable Point
  67. 2:55:21
    QuestionDid the US Navy know American prisoners of war were aboard ships it attacked?Answer

    No. Had commanders known, they would probably have tried to board the ships.

    Q&A
  68. 2:55:27
    QuestionWhat could HMS Belfast have contributed in the Falklands War?Answer

    In this counterfactual, she could have served as Michael Clapp's flagship and delivered heavy naval gunfire from her twelve 6-inch guns.

    Q&A
  69. 2:56:12
    QuestionDid submarine milk cows count as tenders?Answer

    To an extent: they carried some other supplies, but their primary role was fuel supply.

    Q&A
  70. 2:56:22
    Maintenance battalions and forward upkeep

    A modern depot concept could place dedicated maintenance personnel alongside deployed ships whose crews lack time for routine upkeep and post-damage repair.

    Notable Point
  71. 2:59:53
    QuestionWhat was the British equivalent of the US Navy's Seabees?Answer

    The Mobile Naval Air Bases, or MONABs, were the closest British naval comparison.

    Q&A
  72. 3:05:03
    Why Norway mattered to the Atlantic war

    The loss of Norway is rated as especially damaging because control or even continued neutrality there would have made the later North Atlantic struggle much easier for Britain.

    Notable Point
  73. 3:06:01
    QuestionCould USS Enterprise (CVN-65) have been used to test EMALS?Answer

    Physically yes, but adapting and operating her for the test would have been too expensive to attract political support.

    Q&A
  74. 3:09:13
    QuestionHad an intake cover caused the Mediterranean F-35 loss?Answer

    That was only an unconfirmed rumor in November 2021; the conspicuous cover and routine checks made the claim questionable, so the cause still required evidence.

    Q&A
  75. 3:10:56
    QuestionWould using two Pegasus engines have benefited the Fleet Air Arm?Answer

    Possibly. It could have been very useful if the new design retained the Pegasus engine's reliability.

    Q&A
  76. 3:12:28
    QuestionWhat did Britain spend money on before World War II instead of defence?Answer

    Education, local services, some health care, infrastructure, foreign policy, administration, and the costs of governing the empire all competed for funds.

    Q&A
  77. 3:13:02
    QuestionWhat if HMS Warspite or HMS Vanguard had been reactivated for the Falklands War?Answer

    Its 15-inch guns would have provided overwhelming naval gunfire support for the force around San Carlos Water.

    Q&A
  78. 3:16:45
    QuestionWhat unusually specialized auxiliary ship did the Royal Navy consider?Answer

    It considered a shower tender, but ultimately fitted showers aboard individual ships instead.

    Q&A
  79. 3:20:36
    QuestionWould 3D printing favor specialist repair ships or printers on individual warships?Answer

    It could support either model: central printers improve efficiency, while distributed printers improve resilience; complex items such as engines would still require conventional support.

    Q&A
  80. 3:25:52
    QuestionWould less naval aviation and more battleship construction lead to more Jutland-style battles?Answer

    Not necessarily. Geography and dispersed task groups would often produce smaller engagements more like the Falklands or Dogger Bank.

    Q&A
  81. 3:29:57
    QuestionHow specialized could a naval store ship become?Answer

    Very specialized, depending on its cargo and task, including whether stores needed to be kept cool.

    Q&A
  82. 3:30:36
    QuestionDid skilled-trade costs and competition from civilian repair firms help push the US Navy away from depot ships?Answer

    Yes. Those personnel pressures mattered even though the capability remained useful.

    Q&A