German Type UB I submarine German Type UB II submarine German Type UB III submarine German Type UC I submarine German Type UC II submarine German Type UC III submarine British H-class submarine German Type II submarine Mackerel-class submarine German Type XVII submarine Type XXIII submarine Ha-201-class submarine Type 201 submarine Type 205 submarine Type 206 submarine Sang-O-class submarine Gotland-class submarine Ghadir-class submarine Andrasta-class submarine