Great War at Sea series

The Great War at Sea series of board wargames released by Avalanche Press features operational and tactical-level naval combat in the period of the early battleships and dreadnoughts (various titles cover from 1898 to 1930).

With many missions, the entire route and actions must be pre-plotted at the beginning, with some more flexible assignments (usually raiding or searching) only requiring two turns of planning.

There is a certain amount of record-keeping in the system, with hits from combat being recorded against gunnery, hull or speed factors.

For combat, ships are primarily rated as having primary, secondary and tertiary gunnery factors, which have different ranges and ability to penetrate armor to do damage.

Great War at Sea: U.S. Navy Plan Orange won the Origins Awards for "Best Historical Board Game" of 1998.