This is the TR35 stealth sub. It's design is based on a thresher shark to confuse enemy sonar. It has a dorsal fin plasma cannon and an array of sensor disruptors along it's sides. The underside features a powerful 3d sonar system which allows for accurate mapping of the sea bed. It also features a pair of forward firing sonic disruptors.
This was created using only kit 8118 Hybrid Rescue Tank. I will create instructions if they are wanted.