The capital-ship baseline allows Britain and the United States 525,000 tons each, Japan 315,000, and France and Italy 175,000 each. At 35,000 tons per ship, those totals correspond to fifteen, nine, and five battleships respectively. Cruiser allowances differ by category: the American allowance favors heavy cruisers, while Britain has more room for light cruisers. The stated submarine ceiling of 52,700 tons leaves little room for Stalin's proposed 240 boats. Moscow would therefore have to make a substantial concession on undersea tonnage.
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The historical ratios define the bargaining space
The existing capital-ship, carrier, cruiser, destroyer, and submarine allocations show how difficult it would be to insert a sixth major navy.