To avoid unnecessary wear on the drone and tether, after each dive in salt water, the drone and tether must be rinsed with fresh water.
The drone can either be submerged in fresh water or rinsed with a garden hose. Running the thrusters in fresh water after each dive will keep them in shape longer.
The tether can be rinsed inside the tether bag. NB: make sure that the blue cover on the Surface Unit is on. Remove the Surface Unit from the tether bag before rinsing the tether. The Surface Unit is not splash proof.
If necessary the surface unit can be cleaned with a dry cloth.