The Submarine is a naval vehicle designed to be a stealth type. However it does have a considerably low health because it can be taken out by two-three hits by a HEAT Round turret. It has limited armament, but is very deadly if used properly. It's torpedoes can bring down Destroyers with one or two hits, and are quite accurate. A good strategy is to pop above the water and shoot then go deeper, a hit and run strategy. It is good to move around so you can confuse the destroyer.