Lt 221
- Type of ship: Tug Boat
- Lenght: 60 meters
- Position: Gulf of Cagliari
- Depth: 38 to 49 metri
American Tug Boat which sank the 15th of october 1944 in contact with a mine.13 people died during the sinking of the ship : nine members of the crew, two soldiers of the US-Army and two passenger. Was transporting a ponton which also sank about one mile away from the LT221 now known as the Chiatta dell’Lt 221.