Aquanautica Imperialis is a set of rules for naval games in the world of Warhammer 40K.
Pz8 is a series of two-page wargames rules. Among them are is a set of free wargames rules for coastal actions.
David Heading offers a set of free wargames rules for Renaissance Naval Battles.
Island Mayhem is a set of rules for playing games in which 25mm – 28mm Pirates are searching for treasure.