Construction
Conventional R.O.V.s are built with a large flotation pack on top of an aluminium chassis, to provide the necessary buoyancy. Syntactic foam is often used for the flotation. A tool sled may be fitted at the bottom of the system and can accommodate a variety of sensors. By placing the light components on the top and the heavy components on the bottom, the overall system has a large separation between the center of buoyancy and the center of gravity: this provides stability and the stiffness to do work underwater.
Electrical cables may be run inside oil-filled tubing to protect them from corrosion in seawater. Thrusters are usually in all three axes to provide full control. Cameras, lights and manipulators are on the front of the ROV or occasionally in the rear to help in maneuvering.
The majority of the work class ROVs are built as described above; however, this is not the only style in ROV building. Specifically, the smaller ROVs can have very different designs, each geared towards its own task.
Read more about this topic: Remotely Operated Underwater Vehicle
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