The primary operations for PGS Onshore in the Beaufort Sea near Oliktok Point consist of seismic surveys that involving laying out long lines of cable on the ocean floor and firing air guns into the water.  The air guns create a pressure wave that goes down and bounces off the subsurface topography of the ocean floor, then comes back up.  The cables measure the bounce back signal from the subsurface topography to determine if any formations might be viable for development.  Here, crews from a Reliance boat haul in the cable  in a manner very similar to hauling in fish lines and nets.  In fact, many of the crews are former operators of shrimp boats in Louisiana.

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