The Maona Rossa is a Second World War wreck. It lies in Piran Bay in Croatia. The Maona Rossa is an iron cargo barge without its own propulsion. The barge was loaded with bauxite and was being towed by a tugboat. The open wreck lies upright in the mud at a depth of approximately 22 meters. The iron crossbeams are clearly visible and, as the structure is largely open, you can easily view the wreck and swim through it in various places.