I toured the USS Cobia, a World War II submarine that sank 13 ships and received 4 battle stars. Take a look inside. The USS Cobia submarine sank 13 ships and rescued seven downed American pilots ...

The USS Cobia submarine sank 13 ships and rescued seven downed American pilots during World War II. The US Navy submarine is open to the public for tours at the Wisconsin Maritime Museum in Manitowoc.