Ocean Conqueror

As a submarine pilot within a war, your task is to destroy enemy munitions
convoys in your sector. There are eight destroyers and four transports to
destroy, within a time limit of 18 hours. You are armed with torpedos and
guided missiles (upon firing one, control inputs are applied to the missile,
rather than the ship). You also have a long range radar and a static map with
co-ordinates. Controls are complex, with the periscope and rudder coming under
your direct control.