The L4 was laid down in 1916 and commissioned in 1918. Broken up in April 1934.
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. A map of the Bias Bay attack is provided here
Source: This image came from Flickr, see https://flickr.com/photo.gne?id=31384484381
Date picture taken
1922
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