POWERBOATS EXPANSION 1 you can add complete to the Powerboats game. These tiles can bring your speedboat in trouble, but you try take advantage of the new situation. CONTENT: 7 tiles, each 3 water hexes long. 2 sides, dark and light blue (like the game board sides): 2x Redoubt 2x Current 2x Maelstrom 1x Low-water