Episode 4

Aberdeen lorry driver Kenny Watson is nicknamed Pirelli because he used to be a tyre fitter. During the week he drives cargo to and from the harbour. But at weekends he hangs up his overalls, puts on his Stetson and becomes a country and western singer.

Visibility has been reduced to just a few feet for the divers on the Bibby Sapphire. As always, they rely on the Dive Supervisor to be their eyes and ears as a new pipeline is installed.

Assistant Life Support Technician Nancy Orton looks after the home comforts of the divers when they are in saturation.

And at the Harbour thousands of gallons of fuel are unloaded from a huge tanker.