We also discussed how to power the operation of the endofector. It was generally agreed that compressed air should be used. The rules state that a pressure of up to 40psi can be used. The question was then raised where were the control valves to be located? Placed actually on the ROV would require only one air hose but might require a holding tank and control wires to operate the valves. A much easier design would be to have two air hoses and place mechanically operated valves on the surface.
Discussion then moved to Task#4, removal of a goop sample from the sea floor. For this the crew had come up with a thin metal tube pushed down into the goop (gelatin) with a flap valve that would close and create a vacuum when the tube was with drawn. It was found that if tabs were cut and bent into the tube the sample of goop could be retrieved successfully.