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.
Time notes
- 0:18QuestionWhat would be the impact of the Admiralty building ten sub-10,000-ton Hermes-style aircraft carriers between 1926 and 1930?AnswerQ&A
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.
- 4:08Carrier tonnage limits turn ship size into an availability problemChapter
Article 7's aggregate carrier allowance means that individually powerful carriers can leave a global navy with too few operational decks.
- 5:50Experimental-carrier rules give Britain an early replacement advantageNotable Point
Article 8 classifies existing or already-building carriers as experimental, allowing Britain to replace Hermes and several conversions without waiting for normal age limits.
- 7:22Large carrier conversions expose the cost of using scarce tonnageNotable Point
Article 9 permits two 33,000-ton conversions, while a possible British Admiral-class conversion remains a carefully qualified archival inference.
- 10:50Global commitments reward six smaller carriers over a few giantsChapter
The Royal Navy's need to cover several oceans makes carrier count, refit capacity, and training cycles as important as individual ship power.
- 12:18Carrier gun limits and the alternative of a cruiser escortNotable Point
Washington allowed heavy carrier guns, but its uncapped cruiser tonnage also offered a way to put surface-gun support in a separate escort.
- 13:09The 10,000-ton threshold opens an uncapped cruiser-carrier routeChapter
The Washington framework caps individual cruiser size without limiting total cruiser tonnage, making the 10,000-ton boundary central to the small-carrier scenario.
- 16:01Hermes already contains the outline of a light fleet carrierChapter
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.
- 20:36Aircraft maintenance demands shape Hermes's operating rateNotable Point
Some early fighters needed more maintenance than the later Swordfish, so retaining maintainers could turn easier upkeep into more flying hours.
- 21:23Hermes's first-generation features reveal where a successor could improveNotable Point
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.
- 24:22Draining petrol lines limits carrier fire hazardsNotable Point
Returning petrol to its tanks reduced the fuel left in exposed distribution lines where it could sustain a shipboard fire.
- 25:03Fuel exclusions give a Hermes successor room for greater enduranceNotable Point
The treaty definition excludes fuel and reserve boiler feed water, so the next small carrier need not inherit Hermes's limited fuel capacity.
- 26:11A County-class hull offers a practical route to the cruiser carrierChapter
Later boilers, lighter armament, and County-class proportions could create a faster Hermes successor while freeing cruisers from carrying their own seaplanes.
- 29:54Beatty and RAF control block an otherwise plausible carrier policyNotable Point
Institutional confidence and procurement conservatism help explain why Britain did not turn a plausible small-carrier design into a sustained programme.
- 32:18British maritime power depends on more than treaty parityChapter
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.
- 39:53Cruiser carriers spread naval aviation across distant stationsChapter
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.
- 44:02Land-based air threats preserve the need for armoured fleet carriersNotable Point
Small station carriers do not replace heavily protected fleet carriers in waters where the Royal Navy expects repeated attack by land-based aircraft.
- 45:24A cruiser-carrier programme keeps shipyards and Dominion procurement activeChapter
Four to eight extra cruiser-size carriers could sustain yards, lower repeated-build costs, and attract Australian or New Zealand funding.
- 48:41Why American and Japanese navies might adopt cruiser carriersNotable Point
A successful British pattern gives the United States and Japan different but compelling reasons to revisit their own small-carrier experiments.
- 51:24Small carriers extend amphibious support and naval gunfire spottingChapter
Japan and Britain could use cruiser carriers for shore support and for aircraft spotting that extends the effective range of naval gunfire.
- 52:51The TSR initials lead into linked carrier and bomber cancellationsNotable Point
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.
- 54:33France and Italy gain a politically manageable carrier optionNotable Point
A small carrier fits limited national tonnage allowances and can be justified as an organic scouting platform rather than a full fleet carrier.
- 55:36Cruiser carriers force a different 1930 London Treaty bargainChapter
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.
- 57:53British decline appears as a sequence of economic shocksNotable Point
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.
- 1:00:01A 13,500-ton category separates light and fleet carrier missionsChapter
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.
- 1:05:04Twelve imperial light carriers share one treaty allowanceChapter
Using smaller hulls could fit twelve carriers within the proposed imperial allowance, including two operated by Australia and ten by the Royal Navy.
- 1:07:50A small-carrier production line could change HMS Unicorn's ancestryNotable Point
An existing family of small carriers could supply the design basis for Unicorn and create demand for her aviation-support role.
- 1:08:38Employment politics can protect an interwar carrier programmeNotable Point
Interwar naval orders could be distributed and named to make cancellation costly for constituency MPs, tying fleet construction to employment policy.
- 1:10:09Historical distance matters when interpreting interwar BritainNotable Point
Reading the 1930s through later British decline can obscure contemporary choices, while analysis of current conflict requires care about personal investment in the outcome.
- 1:11:17Light carriers could release tonnage for a larger Ark RoyalChapter
Removing older experimental carriers and developing separate light carriers could let Britain order larger Ark Royals with stronger protection and revised deck arrangements.
- 1:14:59Separate light carriers could replace Ranger and Wasp with more YorktownsNotable Point
Ranger and Wasp lose their rationale in this scenario, opening a route to additional Yorktowns alongside separate scouting carriers.
- 1:16:16Small carriers become practical laboratories for deck-edge liftsChapter
A numerous light-carrier force could test new designs in service, with unsuccessful ships reassigned to training while the results inform larger carriers.
- 1:17:18QuestionWhy did the Royal Navy take so long to adopt deck-edge lifts?AnswerQ&A
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.
- 1:19:56Japan's minimum-force strategy combines fleet strength and distant logisticsNotable Point
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.
- 1:22:20Russia's fleet concentration problem survived improved gunneryNotable Point
Improved Russian gunnery between Dogger Bank and Tsushima did not solve the difficulty of combining distant squadrons against Japan.
- 1:23:25More Japanese carriers would require more pilotsChapter
Additional decks could push Japan to reconsider elite pilot selection and develop the wingmen and improving recruits needed for a deeper aviation force.
- 1:25:39Extra carriers do not erase the Allies' industrial advantageNotable Point
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.
- 1:27:17More carrier exercises could expose faulty air-defence assumptionsChapter
More carriers in interwar exercises could provide earlier evidence against misleading assumptions about naval anti-aircraft defence.
- 1:28:10Allied light carriers could complicate a cruiser offensive in Southeast AsiaNotable Point
Several Allied navies could field local carrier groups that complicate surface operations, while remaining vulnerable to concentrated fleet-carrier aviation.
- 1:29:27Swordfish could add a second attack direction at the River PlateNotable Point
In the counterfactual River Plate action, Swordfish torpedoes could slow Admiral Graf Spee while she fought the cruisers and prevent her reaching Uruguay.
- 1:30:06Light-carrier duties in the Atlantic could change later losses off NorwayNotable Point
Extra Atlantic carriers could strengthen raider hunts and assume anti-submarine duties, with possible consequences for the large carriers available during the Norwegian campaign.
- 1:30:48German construction limits and French allegiance leave further uncertaintiesNotable Point
Foreign carrier growth would not automatically remove Germany's building constraints, and French carriers could follow very different wartime paths.