The US Navy was trying to establish whether Capt. McVeigh was zig-zagging as per standing order. The Japanese submarine skipper was brought in to establish that he wasn’t. The defense on cross-examination asked Capt. Hashimoto, “would it have made a difference?” His answer was, “No.”
Apologize. It was “McVay”. Should have checked.
The US Navy was trying to establish whether Capt. McVeigh was zig-zagging as per standing order.
Captain Tory was busted to a desk job because of this, but was later promoted to Admiral.