Video

What if HMS Hermes was the first of a class of Cruiser Carriers?

Study What if HMS Hermes was the first of a class of Cruiser Carriers?, a Dr. Alex Clarke video from 6 Jun 2026, with 42 time notes. Topics include Alternate History, Carrier Design, Force Structure.

Date
Runtime1:33:49
Guide points42 time notes

Time notes

  1. 0:18
    QuestionWhat would be the impact of the Admiralty building ten sub-10,000-ton Hermes-style aircraft carriers between 1926 and 1930?Answer

    A workable Hermes redesign could provide more reconnaissance and trade-protection coverage, release fleet carriers for other duties, and encourage a separate treaty category for light carriers. Wider adoption could change carrier development and early-war operations, while leaving Japan at an industrial disadvantage if it fought both Britain and America.

    Q&A
  2. 4:08
    Carrier tonnage limits turn ship size into an availability problem

    Article 7's aggregate carrier allowance means that individually powerful carriers can leave a global navy with too few operational decks.

    Chapter
  3. 5:50
    Experimental-carrier rules give Britain an early replacement advantage

    Article 8 classifies existing or already-building carriers as experimental, allowing Britain to replace Hermes and several conversions without waiting for normal age limits.

    Notable Point
  4. 7:22
    Large carrier conversions expose the cost of using scarce tonnage

    Article 9 permits two 33,000-ton conversions, while a possible British Admiral-class conversion remains a carefully qualified archival inference.

    Notable Point
  5. 10:50
    Global commitments reward six smaller carriers over a few giants

    The Royal Navy's need to cover several oceans makes carrier count, refit capacity, and training cycles as important as individual ship power.

    Chapter
  6. 12:18
    Carrier gun limits and the alternative of a cruiser escort

    Washington allowed heavy carrier guns, but its uncapped cruiser tonnage also offered a way to put surface-gun support in a separate escort.

    Notable Point
  7. 13:09
    The 10,000-ton threshold opens an uncapped cruiser-carrier route

    The Washington framework caps individual cruiser size without limiting total cruiser tonnage, making the 10,000-ton boundary central to the small-carrier scenario.

    Chapter
  8. 16:01
    Hermes already contains the outline of a light fleet carrier

    A comparison of Hermes with the later Colossus class shows that her size, speed, and machinery were credible foundations for a family of useful small carriers.

    Chapter
  9. 20:36
    Aircraft maintenance demands shape Hermes's operating rate

    Some early fighters needed more maintenance than the later Swordfish, so retaining maintainers could turn easier upkeep into more flying hours.

    Notable Point
  10. 21:23
    Hermes's first-generation features reveal where a successor could improve

    Removing high fire-control weight and revising the flight-deck ends could improve a Hermes successor, while her handling shows the practical effects of carrier windage.

    Notable Point
  11. 24:22
    Draining petrol lines limits carrier fire hazards

    Returning petrol to its tanks reduced the fuel left in exposed distribution lines where it could sustain a shipboard fire.

    Notable Point
  12. 25:03
    Fuel exclusions give a Hermes successor room for greater endurance

    The treaty definition excludes fuel and reserve boiler feed water, so the next small carrier need not inherit Hermes's limited fuel capacity.

    Notable Point
  13. 26:11
    A County-class hull offers a practical route to the cruiser carrier

    Later boilers, lighter armament, and County-class proportions could create a faster Hermes successor while freeing cruisers from carrying their own seaplanes.

    Chapter
  14. 29:54
    Beatty and RAF control block an otherwise plausible carrier policy

    Institutional confidence and procurement conservatism help explain why Britain did not turn a plausible small-carrier design into a sustained programme.

    Notable Point
  15. 32:18
    British maritime power depends on more than treaty parity

    Britain's shipping, finance, and global information networks made naval reach essential, while the Admiralty gambled that Congress would not fund the US Navy to its paper entitlement.

    Chapter
  16. 39:53
    Cruiser carriers spread naval aviation across distant stations

    Pairs of small carriers attached to cruiser squadrons could maintain scouting and trade-protection coverage from the South Atlantic through the East Indies to China.

    Chapter
  17. 44:02
    Land-based air threats preserve the need for armoured fleet carriers

    Small station carriers do not replace heavily protected fleet carriers in waters where the Royal Navy expects repeated attack by land-based aircraft.

    Notable Point
  18. 45:24
    A cruiser-carrier programme keeps shipyards and Dominion procurement active

    Four to eight extra cruiser-size carriers could sustain yards, lower repeated-build costs, and attract Australian or New Zealand funding.

    Chapter
  19. 48:41
    Why American and Japanese navies might adopt cruiser carriers

    A successful British pattern gives the United States and Japan different but compelling reasons to revisit their own small-carrier experiments.

    Notable Point
  20. 51:24
    Small carriers extend amphibious support and naval gunfire spotting

    Japan and Britain could use cruiser carriers for shore support and for aircraft spotting that extends the effective range of naval gunfire.

    Chapter
  21. 52:51
    The TSR initials lead into linked carrier and bomber cancellations

    The change in meaning from the Swordfish's TSR role to the later jet bomber opens a discussion of how British carrier and bomber cancellations reinforced one another.

    Notable Point
  22. 54:33
    France and Italy gain a politically manageable carrier option

    A small carrier fits limited national tonnage allowances and can be justified as an organic scouting platform rather than a full fleet carrier.

    Notable Point
  23. 55:36
    Cruiser carriers force a different 1930 London Treaty bargain

    British investment in sub-10,000-ton carriers removes support for counting the type against carrier tonnage and could put the treaty conference at risk.

    Chapter
  24. 57:53
    British decline appears as a sequence of economic shocks

    The London Treaty digression rejects a single-cause account of British decline, linking World War I debt, the Great Depression, World War II, and the abrupt end of Lend-Lease.

    Notable Point
  25. 1:00:01
    A 13,500-ton category separates light and fleet carrier missions

    A proposed 13,500-ton light-carrier limit separates scouting and presence duties from fleet-carrier design, with national totals dependent on both ship size and yard capacity.

    Chapter
  26. 1:05:04
    Twelve imperial light carriers share one treaty allowance

    Using smaller hulls could fit twelve carriers within the proposed imperial allowance, including two operated by Australia and ten by the Royal Navy.

    Chapter
  27. 1:07:50
    A small-carrier production line could change HMS Unicorn's ancestry

    An existing family of small carriers could supply the design basis for Unicorn and create demand for her aviation-support role.

    Notable Point
  28. 1:08:38
    Employment politics can protect an interwar carrier programme

    Interwar naval orders could be distributed and named to make cancellation costly for constituency MPs, tying fleet construction to employment policy.

    Notable Point
  29. 1:10:09
    Historical distance matters when interpreting interwar Britain

    Reading the 1930s through later British decline can obscure contemporary choices, while analysis of current conflict requires care about personal investment in the outcome.

    Notable Point
  30. 1:11:17
    Light carriers could release tonnage for a larger Ark Royal

    Removing older experimental carriers and developing separate light carriers could let Britain order larger Ark Royals with stronger protection and revised deck arrangements.

    Chapter
  31. 1:14:59
    Separate light carriers could replace Ranger and Wasp with more Yorktowns

    Ranger and Wasp lose their rationale in this scenario, opening a route to additional Yorktowns alongside separate scouting carriers.

    Notable Point
  32. 1:16:16
    Small carriers become practical laboratories for deck-edge lifts

    A numerous light-carrier force could test new designs in service, with unsuccessful ships reassigned to training while the results inform larger carriers.

    Chapter
  33. 1:17:18
    QuestionWhy did the Royal Navy take so long to adopt deck-edge lifts?Answer

    Experience of the North Sea sweeping aircraft from exposed decks made British designers wary. Small carriers intended for other stations might accept that exposure to gain hangar space.

    Q&A
  34. 1:19:56
    Japan's minimum-force strategy combines fleet strength and distant logistics

    More small carriers could reinforce Japan's search for a force large enough to make distant intervention costly, while construction capacity still limits the programme.

    Notable Point
  35. 1:22:20
    Russia's fleet concentration problem survived improved gunnery

    Improved Russian gunnery between Dogger Bank and Tsushima did not solve the difficulty of combining distant squadrons against Japan.

    Notable Point
  36. 1:23:25
    More Japanese carriers would require more pilots

    Additional decks could push Japan to reconsider elite pilot selection and develop the wingmen and improving recruits needed for a deeper aviation force.

    Chapter
  37. 1:25:39
    Extra carriers do not erase the Allies' industrial advantage

    The alternate force changes campaigns and losses but not the overwhelming production imbalance if Japan still fights both the British Empire and the United States.

    Notable Point
  38. 1:27:17
    More carrier exercises could expose faulty air-defence assumptions

    More carriers in interwar exercises could provide earlier evidence against misleading assumptions about naval anti-aircraft defence.

    Chapter
  39. 1:28:10
    Allied light carriers could complicate a cruiser offensive in Southeast Asia

    Several Allied navies could field local carrier groups that complicate surface operations, while remaining vulnerable to concentrated fleet-carrier aviation.

    Notable Point
  40. 1:29:27
    Swordfish could add a second attack direction at the River Plate

    In the counterfactual River Plate action, Swordfish torpedoes could slow Admiral Graf Spee while she fought the cruisers and prevent her reaching Uruguay.

    Notable Point
  41. 1:30:06
    Light-carrier duties in the Atlantic could change later losses off Norway

    Extra Atlantic carriers could strengthen raider hunts and assume anti-submarine duties, with possible consequences for the large carriers available during the Norwegian campaign.

    Notable Point
  42. 1:30:48
    German construction limits and French allegiance leave further uncertainties

    Foreign carrier growth would not automatically remove Germany's building constraints, and French carriers could follow very different wartime paths.

    Notable Point