Type 15 Flounder Attack Sub

The Flounder is a large double hull attack submarine. Armed with 60x torpedeos and 4x dual 203mm cannons, it can deliver withering damage for a submarine. It can cruise at 20 knots and change depth quickly. It is best to feather the depth buttons as you ascend so you don't breach out of the water when coming up from the deep. For the supply cost, it's a formidable opponent.