Background
What happened? A Diving Support Vessel (DSV) was operating in the East Shetland basin replacing a major pump on the sea bed adjacent to an offshore installation at a depth of 140 meters.
Divers living in the saturation chambers on the DSV were travelling to the sea bed in a diving bell.
One diver, on his first saturation dive, developed a rare complication, burst lung in this case resulting in a pneumomediastinum, where breathing gas had leaked from his lung into the area around his heart and into his neck.