Back German submarine U-23 English اسام یو-۲۳ Persian Unterseeboot 23 French U-23 Polish U-23 (tàu ngầm Đức) Vietnamese U-23號潛艇 Chinese
- U-23 - podmornica Kaiserliche Deutsche Marine
- U-23 - podmornica k.u.k Kriegsmarine
- U-23 - podmornica Kriegsmarine
- U-23 - podmornica Bundeswehra