Welcome back to the our channel for a feature on the exciting and physically challenging world of underwater ship cleaning. "Some hull cleaning may involve diving to depths that exceed normal diving depths" nope! the biggest ships have a draft of maybe 30 meters, or about 100 feet. That's certainly not shallow, but it's also definitely not the realm of saturation divers. I did that for a few years. It was a great gig. I got to travel everywhere the cruise ships go, and finish every work day at an all you can eat buffet. We used water powered machines, that ran off of the ship's firepumps. Much simpler than the big hydraulic carts they're using here. Can be cold hard Yakka, whilst hand scraping a cargo ships rudder I discovered that the hinge pin on the rudder had broken and was protruding around a metre . The crew had wondered why the ship was sluggish on the helm. Our dive company got the job to do a repair so the ship could get to drydock. After using the pneumatic wire brushes on the hull you would find dozens of pieces of wire in your wetsuit.