Silent Service II is a full version simulation game designed for Mac users, allowing players to experience the strategic challenges of commanding a submarine during World War II. The game emphasizes realistic navigation and combat scenarios, where players must utilize instruments and charts to locate enemy convoys. Players are faced with critical decisions, such as choosing between a submerged periscope attack or a surface charge at night based on radar readings.

The gameplay revolves around the motto 'FIND 'EM, CHASE 'EM, SINK 'EM,' highlighting the strategic depth involved in submarine warfare. Players can decide whether to launch a spread of torpedoes or take a calculated single shot, adding layers of complexity to the simulation. Silent Service II offers an immersive experience that challenges players to think like a commander in the elite ranks of the Silent Service.