Ah ha . . . my picture lives on in the cyber world! Well being Mike, that is not a cable in the picture. Its rubber tubing that runs from the final drive vents in the hull to the air intake in order to vent the final drives while surfing. The line you see in the photo Tees off on the engine deck to go to the final drives. The normal vents are replaced with replacements from the DWFK(Deep Water Fording Kit) that allow the rubber line to be attached. Once a Fording operation was complete the normal operation vents would be installed. They are normally left in place on MEU hogs that are embarked aboard Amphib ships and conduct Fording ops while deployed.
Outta here, Mike sends . . .