This is the largest submarine in the game and it also carries the worst weapons, missiles. The typhoon submarines can show up at any time and is a huge threat to the patrol boat. Since the missiles rise very fast they are difficult to escape, unless you are precautious. Before the typhoon fires a missile it must first open a hatch in the hull, this is the point you should watch out for. Due to the long contact to salt water the hatches make a sound when they open, lucky for you !
A typhoon submarine carries twenty missiles. When all missiles are fired, the typhoon disappears and so does your score chances.
You score between 10,000 and 20,000 points when destroying a typhoon submarine.