On this day, the British mini-submarine XE-4 and its five-man crew cut the undersea communications cables connecting Singapore to Saigon, and Saigon to Hong Kong. This forced the Japanese to communicate via radio, which was easier for the Allies to intercept.
The L4 was laid down in 1916 and commissioned in 1918. In October 1927, L4 and L5 submarines rescued crew members of the S.S. Irene from a pirate attack in Bias Bay, off Hong Kong waters. <Read more ...>
Date picture taken (to nearest decade for older photos):