Admiral: Sea Battles is a naval warfare turn-based strategy game but with the emphasis on action rather than accuracy. Instead of using rules to model real warfare conditions, or simulate historically accurate battles, Admiral uses a simple rule system and among the 11 types of ships you can command you can have both galleons and steam frigates at the same time for example!
The game is composed of 3 campaigns with 6 battles each. Each battle has specific objectives involving naval battles, invasions, strategic placement of forts and ports, etc.
You view the game from a top-down squared tactical-map perspective from where you issue orders to your fleet. Among the added features is the ability to board and capture ships, build forts and ports (to repair ships) and both single player and hot-seat multiplayer modes.