G3's corrected deep-load displacement is roughly 54,800 tons, providing a useful comparison with the American Lexington design. Four geared turbines driving four shafts were expected to produce 160,000 shaft horsepower. That power supported a projected 31-32 knots, slightly below Lexington's 33 knots and 180,000 shaft horsepower. G3 answered with nine 16-inch guns rather than Lexington's eight. The comparison shows two large battlecruisers choosing different balances between machinery, speed, and broadside weight before the treaty system stopped either gunship design from being completed.
Chapter · 53:44-56:26
G3 trades Lexington's speed for a ninth 16-inch gun
The G3 design combines about 54,800 tons at deep load, 160,000 shaft horsepower, 31-32 knots, and nine 16-inch guns, giving up some Lexington speed for another main gun.