Aircraft Carriers of the 1920s & 1930s Long Patrol Part 2: Papers & Treaties

A definition of capital ships explains why carrier deployments became strategic and political decisions rather than routine fleet movements.

The Washington and London treaties set national carrier tonnage, unit size, and gun limits while allowing two large battlecruiser or battleship conversions.

Arthur Johns's wording and Reginald Henderson's appointment show the Royal Navy shifting from gun-centered definitions toward aviation-led carrier design.

Because roughly six 22,000-ton carriers could fit within Britain's 135,000-ton treaty allowance, compared with five ships at the normal 27,000-ton maximum.

The treaty definition excluded ships that could launch but not recover aircraft aboard, leaving HMAS Albatross and Commandant Teste outside carrier allowances.

Eugene Ely's 1910 takeoff and 1911 arrested landing demonstrate the basic operations from which purpose-built carriers developed.

Early split-superstructure concepts and Ark Royal's launch-only deck clarify the operational boundary between true carriers and seaplane carriers.

A comparison of island and flush-deck carriers shows how smoke, airflow, hangar space, navigation, and stability shaped interwar layouts.

Interwar carriers used forward lower decks to launch light fighters quickly when visual warning left too little time to clear the main flight deck.

A carrier inventory shows why the Royal Navy accumulated more practical experience in the 1920s despite smaller air groups than later American and Japanese ships.

Furious, Courageous, and Glorious illustrate how fast commerce-protection hulls became carriers while navies invested scarce treaty tonnage in the new type.

British carrier capacity figures counted complete serviceable aircraft, making simple international air-group comparisons misleading.

Treaty clauses capped carrier displacement and guns, enabled two 33,000-ton conversions, and then tightened rules for small carriers and aviation decks on other warships.

A gap in the original treaty treatment of carriers below 10,000 tons helps explain Ryūjō's unusual compact design.

The precision of treaty limits shows that navies already valued carriers as scarce strategic assets capable of moving an air base across the globe.