Part of the mission for today involved deploying a Sound Velocity Probe on a vertical wire in a water depth of approximately 1500m. This probe observes the speed of sound at different depths as it is lowered in the water. In order to make use of the acoustic navigation and seabed mapping sensors onboard James Cook, the speed of sound in water must be known.
Elsewhere on deck, the ROV team continued working in the control van, calibrating the manipulator claw arms on Isis and checking the multiple control and computer systems. The vehicle was switched on towards the end of the afternoon so that the predator manipulator claw arms could be tested. All is ready now for the first test dive of Isis in the open ocean tomorrow.