Offshore installations / Vessels are situated in some of the most hostile parts of the world, they are the main player in world economics, it is the crude oil which they extract that literally powers the world. Without them the world would literally grind to a halt and civilisation would be on the verge of the middle ages.

Require a workforce to remain onboard for oil processing to be carried out.

The trend of using FPSOs (drilling ships) has meant that commercial divers tend to operate from massive Dive Support Vessels (DSVs) which roam the seas carrying out essential work underwater for platform and vessel alike.