The game consists of a map of the North Sea, showing the United Kingdom, coasts of Norway, Denmark, Germany, Belgium and France. There are two paths of points that wrap around England and in each part are points of conflict (numbered to match lists supplied in the rules).

Cards with silhouettes of target ships are supplied to match the numbers. The cards include vital data regarding tonnage and size and a number that represents the roll needed to sink the ship. The game also includes 3 plastic submarines and 3 plastic airplanes to represent the players.