Similar to 呂号第二十一潜水艦

Japanese submarine Ro-20

Japanese submarine Ro-19

Japanese submarine Ro-22

Japanese submarine I-180

Japanese submarine I-182

Japanese submarine I-184

Japanese submarine I-185

HMAS Adelaide (1918)

USS S-10

RMS Empress of Canada (1920)

HMS Thracian (1920)

RMS Lancastria

Japanese submarine Ro-3

Japanese submarine Ro-4

Japanese submarine Ro-5

Japanese submarine Ro-16

Japanese submarine Ro-56 (1921)

Japanese submarine Ro-57

Japanese submarine Ro-58

Japanese destroyer Aoi (1920)

Japanese battleship Mutsu

Japanese submarine Ro-15