The players have to get their merchant ships from their home harbor to the destination harbor of the same color and back again. The war ships are used to attack enemy ships and defend their own ships. In the center of the game board is a island with two safe neutral harbors. The player harbors are guarded by coast artillery.
Movement is determined by a color die and a standard number die. The color die decides which of the three windroses (red = strong wind, blue = medium wind, yellow = weak wind) is used whereas, the number die defines the wind direction.
The game ends when all surviving merchant ships are back in their home harbor or if a player has no war ships left. At the end of the game points for reaching a harbor or surviving war ships are awarded and the player with the most points wins the game.
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