4D seismic survey for Tyra, Tyra SE and Roar fields of Total has been awarded to Shearwater GeoServices. This survey will be performed by Shearwater’s SW Amundsen vessel. The company has 20 years of experience in 4D source and streamer position, fleet and towing equipment, and sensor technologies. “We are pleased to see Total’s selection of the Isometrix multi-sensor acquisition system for their North Sea 4D season", said Shearwater's CEO.