By Stealth and Sea is a solitaire or cooperative game that takes place during the Battle of the Mediterranean in World War II. In By Stealth and Sea, you lead elements of an Italion commando frogmen unit called Decima Floggiglia MAS. Under your command, teams of frogmen will pilot manned torpedoes in attacks against the Royal Navy in the heavily guarded harbors of Gibralter, Altiers, and Alexandria.