Offshore Drilling Rig

The Offshore Drilling Rig is the third area and it is unlocked at level 4. There are fourteen items that maybe attacked. The Aircraft Carrier, two Drilling Rig, Hapless Civilian, two Large Bunker, Artillery Officer, Landmine Engineer, Frigate, Rocket Boat, Stealth Boat, Mine-Launcher,  Battleship, and a Cruiser.