Naval Historywith Dr. Alex

Q&A · 3:04:49-3:05:03

Why the escalator clause rose to 45,000 tons

The escalator clause sought a clearly viable battleship limit rather than another marginal increase that still forced the compromises of 35,000 tons.

Arms ControlBattleshipsEscalator ClauseSecond London Naval Treaty (1936)Ship Design
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Question

Why did the London treaty escalator clause move to 45,000 tons instead of 40,000?

Short answer

It was intended to cross from a marginally constrained design into a clearly viable modern battleship, making another small compromise ceiling less attractive.

Notes

Treaty negotiators needed a figure that could absorb modern speed, protection, armament, and wartime growth without immediately inviting another round of evasions. A rise only to 40,000 tons risked remaining too close to the previous constraint, whereas 45,000 tons offered a practical design margin.