Naval Historywith Dr. Alex

Q&A · 4:05:30-4:07:41

A 9.2-inch Exeter would face stronger Japanese treaty cruisers too

Larger British cruiser guns would raise the treaty ceiling for Japan, while Exeter's outnumbered position and inexperienced replacement crew would remain decisive problems.

Battle Of The Java SeaHeavy CruisersHMS ExeterImperial Japanese NavyNaval Treaties
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Question

How much more damage could a 9.2-inch-gun Exeter inflict at the Java Sea?

Short answer

Not as much as the gun change suggests, because Japan would answer the higher treaty caliber and Exeter would still be outnumbered with a less experienced crew.

Notes

Giving Exeter 9.2-inch guns cannot be isolated from the treaty system that produced her opponents. If Britain normalizes that caliber, Japan is likely to build 9.2-, 9.8-, or 10-inch cruisers of its own. The relative gunnery advantage therefore shrinks before the battle begins. Exeter would still be outnumbered at the Java Sea and operating with a crew rebuilt after her River Plate damage and repair period. Better sensors or heavier shells cannot erase those operational disadvantages. Changing one fleet's weapon requires changing the international design environment as well.