Ro-57, originally named Submarine No. 46, was an Imperial Japanese Navy Type L submarine of the L3 subclass. Except for a few months in 1938, she was in commission from 1922 to 1945. During World War II, she served on second-line duties in Japan.
Ro-57, originally named Submarine No. 46, was an Imperial Japanese Navy Type L submarine of the L3 subclass. Except for a few months in 1938, she was in commission from 1922 to 1945. During World War II, she served on second-line duties in Japan. (en)