The time is 1939-40. Many of the anti submarine lessons of WW1 have been forgotten. But Hitler has thrown an unprepared world into WW2 and under Admiral Karl Doenitz the U Boat menace has returned to the North Atlantic. Take command of Allied convoys as they struggle to relearn the lessons and deal with ever more deadly Nazi submarines. But other dangers also lurk. Well armed surface raiders are at sea and aircraft are becoming a growing menace. In the North Sea area the enemy have introduced fast motor torpedo craft. British ASW methods are barely adequate. French ASW is antiquated. But the convoys must get through. This game can be played solo or with several players and is designed for use with players own warship miniatures or counters.