Ahoy je ľahko asymetrická hra, v ktorej hráči prevezmú rolu šmejdov a vojakov hľadajúcich slávu na šírom mori.
One player is the Bluefin Squadron, a company of sharks and their toothy friends, who keep order with shot and sword. Another player is the Mollusk Union, an alliance of undersea creatures and their comrades, who fight to reclaim their ancestral home. With more people, some players are Smugglers, maverick captains who run blockades to deliver cargo to those with the most need—or coin.