It's one of HABA's mini-games, which comes in the form of a box on a keychain. The ships are each painted in four different colours (yellow, blue, green and red). Players have three rolls of the dice to try to collect as many flags of one colour as they can to get one or both ships of that colour. If the boat already belongs to another player, the boat is taken from that player. The game ends when all the boats have been captured. The large boat scores 2 points and the small boat scores 1 point. The player with the most points wins.
Contents of the box : 4 large wooden boats, 4 small wooden boats, 3 small dice, 1 rule of the game.