Patreon 72: If Jan 1939 Tsingtao incident leads to war, how does RN carrier force fair against IJN?

The opening frames the January 1939 Tsingtao scenario around diplomacy, geography, and timing rather than an instant Royal Navy versus IJN carrier battle.

Possibly at first, but probably not for long: if either Britain or the United States fought Japan alone, the other risked seeing its own position in East Asia weakened by the outcome.

A force-availability check separates the ships and commanders actually ready in early 1939 from the later Pacific War fleets.

The carrier-air comparison weighs British multi-carrier practice, Swordfish and Skuas, Japanese biplanes, B5N timing, and Royal Navy night-recovery systems.

The beacon still brought the aircraft into the carrier's general recovery area, where timed light buoys dropped astern could provide a visible trail for the final approach.

The fighter comparison sets the Blackburn Roc and Sea Gladiator against the Mitsubishi A5M, then asks how an early Pacific war might redirect British naval-aircraft development.

No: the test aircraft used fixed gear, but the planned service fighter was to have retractable gear and a gull wing better suited to carrier-landing loads.

Royal Navy harbor-attack studies show that Taranto-style carrier strikes grew from a long interwar planning tradition rather than a sudden wartime improvisation.

A concrete Tsingtao flashpoint follows HMS Birmingham, the SS Vincent Paul, Japanese heavy cruisers, and the risk of a convoy interception at sea.

The Type 93's exceptional range remains dangerous, but Royal Navy zigzag practice attacks the prediction problem on which a long-range torpedo solution depends.

HMS Folkestone's reported passage from Manila to Tsingtao appears too quick for the Hastings-class sloop's published 16-knot maximum, showing how recorded movements can test accepted specifications.

Japanese hopes for a decisive success and negotiated settlement collide with a British strategy built around continuing the war until the opponent can no longer sustain it.

Probably not: the merchant ship was already in Royal Navy custody, so a Japanese attempt to board it would still appear to violate protected British space and would be framed as Japanese aggression.

The obscurity of the Tsingtao incident helps explain why the Royal Navy's prewar attention to Japan can look disproportionate when close confrontations are omitted from the historical picture.

Japanese doctrine seeks to forestall, attrit, and then annihilate an approaching fleet, but concentrating that fleet far from home exposes fuel and tanker limits.

Not to the same degree: Britain had spent the interwar years building large fuel stores at Singapore, in Malaya and Ceylon, and at Australian bases such as Darwin.

That is unlikely to be the main explanation: ships of Yamato's exceptional size could not plausibly appear ordinary, while Japan's big-ship, big-gun concept advertised deterrence through visibly overwhelming ships and weapons.

The war plan discussion turns from battles to economic pressure, trade routes, American oil, Hong Kong, and cruiser stations for distant blockade.

Japan still obtained most of its oil from the United States and had little accumulated reserve after major operations in China, while continued fighting also consumed fuel and resources.

Relevant departments supplied information, but the Admiralty conducted much of the planning and sometimes trusted its own intelligence more than the civilian data it received.

They would escort carriers and lead other destroyers in the Royal Navy's close-range night-fighting sequence.

Very little at first: its 1939 bombers lack the range and forward bases needed to reach Japan, so substantial RAF involvement must wait for the Allies to secure and supply closer airfields.

An early war accelerates British carrier and capital-ship construction while blockade pressure deprives Japanese yards of imported oil, rubber, and other materials.

A doctrine section contrasts Japanese cruiser-and-destroyer torpedo attacks with British night action integrating carriers, capital ships, radar, and close-range destroyer work.

Probably within the original theater, because Britain was the attacked power and had already established the command structure, though the coalition might divide the war into an American-led Central Pacific theater and a British-led Southeast Asian theater.

Because the Tripartite Pact does not yet exist, war with Japan could assemble an unusually broad maritime coalition and delay or redirect the European conflict.

Japan would probably pass through 1939 without a decisive fleet attack, but the complete war could last roughly three or four years before blockade and economic exhaustion forced surrender.

The Royal Navy would rely on its established anti-submarine doctrine: ASDIC-equipped destroyers around task groups, supported by Swordfish patrols and continuous carrier-based air cover.

A possible Japanese carrier dash toward Singapore runs into scouting, British radar, flying boats, submarines, Hermes, and the cost of losing irreplaceable carriers.

The Hong Kong operation combines Philippine-based air power, an Allied amphibious force, massed carriers, submarines, and a renewed supply route to China.

The outcome is uncertain, but Chiang might remain because he is a known Allied partner, and far greater aid through Hong Kong could leave the Republic of China stronger than it was historically after 1945.

T-class and other Allied submarines gain forward bases from which to warn of a Japanese sortie and attack the shipping that sustains the home islands.

Germany might reconsider or redesign Graf Zeppelin after observing British carrier operations, while gaining useful but limited knowledge through coalition service and possibly through French cooperation rather than unrestricted British or American transfers.

Probably not: the United States is likely to support or join Britain, the two powers dominate the diplomatic balance, and the war remains distant from the British home front.

Canada would supply the campaign, develop Esquimalt as a major Pacific base, and expand its cruiser, destroyer, and escort forces.

Britain would recover Hong Kong and might seek influence at Shanghai, Germany would press for Tsingtao, China would demand the return of Chinese territory, and other powers could contest Japan's island possessions and frontier gains.

A late Japanese sortie into the East China Sea meets submarine warning, blockade attrition, British night attacks, an American dawn strike, and Allied surface forces.

Possibly, but Mitsumasa Yonai could instead take office and seek peace; an army takeover might remove Yonai and prolong resistance despite Japan's worsening strategic position.

Probably not: the Allies would instead destroy the fleet, bombard the coast, continue carrier strikes, and tighten the blockade until Japan surrendered.

Only if Japanese forces there threatened the campaign; otherwise the Allies could bypass and isolate the island.

A methodological aside explains why credible alternate history must preserve dates, readiness, logistics, and political reactions rather than compare finished weapon statistics in isolation.

King could object, but he was not the senior Pacific commander in early 1939, and the officers above the theater arrangement plus President Roosevelt would determine American participation.

They might appear late, but Japan would need enough aircraft and time to organize them, while growing Allied air power and armoured carriers would shape their effectiveness.

Japan would be in a much weaker naval-aviation position because Soryu only commissioned at the end of 1937 and Hiryu would not commission until 1939.

It could delay the crisis until roughly 1942, giving Poland more time to modernize while Allied mobilization, American cooperation, and Soviet commitments in Asia make the European balance less favorable to aggression.

A limited one at first: Japan lacks the prepared troops, logistics, and surprise that enabled its 1941 offensive, while the Philippines would have time to mobilize and strengthen its defenses.

Most of the First World War generation would go as newer construction arrived, with the Queen Elizabeth and Renown groups and eventually Hood replaced before Nelson and Rodney followed somewhat later.

Probably not: existing sloop, corvette, and Hunt-class escort programs would continue while industry expanded, potentially leaving Britain with a larger convoy force before the European war began.

Carriers would move to the forefront, but the mixed night, surface, bombardment, and escort missions in this war would not produce an immediate, clear-cut end to battleship construction.

Possibly, but only if the ship remained in service or reserve long enough to survive the later European conflict; otherwise Britain would probably scrap the hull and perhaps retain only a turret or another major relic.