Similar to 伊号第百八十一潜水艦

Japanese submarine Ro-31

Japanese submarine Ro-32

Japanese submarine Ro-46

Japanese submarine Ro-47

Japanese submarine Ro-48

Japanese submarine Ro-49

Japanese submarine Ro-50

Japanese submarine Ro-55 (1944)

Japanese submarine Ro-56 (1944)

Japanese submarine Ro-57

Japanese submarine Ro-58

Japanese submarine Ro-59

Japanese submarine Ro-64

Japanese submarine Ro-116

Japanese submarine Ro-117

German submarine U-511

Japanese submarine I-51

Japanese submarine I-152

Submarine No.71

Japanese submarine Ro-11

Japanese submarine Ro-12