Update: Open-sided versus closed hangars in aircraft carriers

I’ve previously seen bits and pieces of this document quoted by authors such as Hobbs and Brown, I’ve now finally gotten hold of the whole thing.

This memorandum was compiled in July 1943. It was after some considerable war experience. It was also after the USN had shared its action and damage reports relating to aircraft carriers for the first years of the war in the Pacific.

Naturally, the naval constructors and designers had a burning question:

Which was better?

Open or closed hangars?

Obviously it is a question we are still asking. But it is fascinating to see what the RN’s Director of Naval Construction (Goodall) was thinking at the height of the war.