Beautifully realized model of the sea battle. A single ship battling a fleet of submarines. The most effective weapon against this enemy is Ashcan. Dropping bombs, you have to calculate the speed of falling bombs and speed of movement and depth of the submarine. If at least one Ashcan fly past and fall to the bottom, you get a penalty on points. Not all boats are the same, among the usual harmless, and deep, and can be seen attacking options that could sink your ship.