A stealth, small type of attack Submarine that use Pistons to submerge. The Submarine is armed with 4 controllable Torpedos and 6 small antiship missiles. What special About the missiles? The Missles still fully functional after submerged into the water completely(usually, missiles and rockets no longer work after submerged. i use invisible mechanism to make the submarine), you can even launch the missiles while underwater. Sadly the Missiles can only be able to attack at medium range and over, attacking a target at a very short range will cause the missiles to miss the targets.

The Submarine able to go at over 76 Km/h
The acceleration is slow like in real life.

AG 1 to detach all weapons