Endure cruel battles for survival in the elements of the oceans and seas. Protect the command post from the powerful onslaught of the attacking enemy. Repel the advancing waves of ships of the enemy fleet. Prevent them from destroying the command post and coastal artillery. Think tactics and strategy for a successful battle and complete victory over the enemy. Earn points, money and advance from lieutenant all the way to admiral of the fleet. Statistics keep records of your military achievements, victories and defeats.