1 & 7 = submarine(special is torpedo) 2 & 8 = destroyer (special sky bomb) 3 & 9 = sea knight helicopter(drop boat that can be kill) 4 & 0 = plane boat (special send plane to attack) player one arrow key O & U to move cannon P to drop sea mine and Y to use special player two AWSD to move Q & E to move cannon Z to shoot X to drop sea mine and C to use special look pretty much like my other game(plane arcade) but its different in the gameplay to make variety give me idea for other game of that kind
