Battle War At Sea is a set of free wargames rules for modern naval warfare. It is designed for 1/6000 scale ships
naval
Jutland: The Rules of the Game
Jutland: The Rules of the Game are a set of free wargames rules for large scale WWI Fleet Actions.
The Immortal Memory
The Immortal Memory is a set of rule for refighting Trafalgar.
Dark Days of the Admiralty
Dark Days of the Admiralty are a set of rules for Victorian Warfare:
These rules represent mid Victorian naval warfare, in many ways as naval officers of the time assumed it might be.
They are intended for fleet actions between the major powers. In fact there were no such actions in this period, from Lissa (1866) to Tsushima (1905). There were however many actions involving smaller powers – for example the wars in South America, the American Civil war and some small actions involving the great powers in for example the Franco-Prussian war.
Aquanautica Imperialis Submarine Rules
Aquanautica Imperialis is a set of free wargames rules for naval battles in the Warhammer 40K universe. The underwater rules are found here.