Age of Sail Campaign

David Manley has written campaign rules for the 1782-1783 naval campaign between the French and British off the coast of India. Manley writes:

Between February 1782 and June 1783 the fleets of French captain Pierre Andre de Suffren de St. Tropez and British Vice-Admiral Sir Edward Hughes fought a series of naval actions along the Indian Coromandel coast in what has become one of the most popular campaign settings for wargamers of the age of sail. Five actions, all largely inconclusive and fought between fleets that were relatively equal in numbers, were fought on the Coromandel Coast, at Sadras, Providien, Cuddalore, Negapatam and Trincomalee.

Pieces of Eight Rules

Pirates anyone? Pieces of Eight is a set of free wargames rules from Andy Watkins portraying Hollywood pirate skirmishes. They are a relatively simple set of rules — but that’s a good thing! Who wants complications when you’re playing pirates.

Grand Fleets demo rules

Majestic 12 games has these demo rules for their Grand Fleets miniature wargame. My group has played these and really enjoys them. Majestic 12 explains:

Grand Fleets is a comprehensive miniatures game of dreadnought-era naval warfare. In addition to rules for everything from ships to aeroplanes, Zeppelins to submarines, the rulebook includes:
Data cards for over 120 ships, plus guidelines for converting any ship of the period to game values; Eight scenarios encompassing conflicts from the Sino-Japanese War of 1894 through the opening salvoes of World War Two, including several variants; Fifteen pages of weapon data, covering all major gun and torpedo models in use through 1939, over 200 aeroplanes, and more than 20 airships; and Optional rules for flotillas, night-fighting, smokescreens, and more!

Red Banner Modern Naval Rules

Red Banner is a set of free wargames rules for modern naval combat.

Corvus Ancient Naval Rules

Corvus is a set of free wargames rules for fighting ancient sea battles.