This is our modification of the Blue ROV basic design. The frame is our own construction from 1" thick HDPE. The batteries are our own design, 3D printed housings with 42 18650 LiPOs. The battery housings are 4" PVC with end caps, and the end caps are laser engraved with “TDSX” and our website on the other end. It weighs about 10 pounds more than the basic Blue ROV Heavy but is a little more than 1 pound buoyant.
Here is a link to our pool workout. SUNP0016 - YouTube