Sonar & Seafloor MappingVeri? cation of Next-Generation Subsea MetrologyBetter Measurements, FastBy Gordon Beattie, Survey Innovation Lead, DOF Subsea UKOF Subsea, together with panies and service providers, attended and inertial navigation information, it is subsea technology compa- the demonstrations which were held now possible to generate centimeter res-nies Sonardyne, 2G Robotics over three days at The Underwater Cen- olution engineering models from which and Seatronics (an Acteon tre in Fort William. accurate measurements can be instanta-Dcompany), successfully demonstrated a The event was organized by DOF Sub- neously and repeatably captured.new underwater surveying technique in sea to showcase the capabilities of dy-Shared Knowledge & December that could signi? cantly short- namic mobile mapping. The new tech-Communicationen the time needed to map underwater nique uses a 3D laser scanner ? tted to structures and offshore sites. an ROV to create highly detailed, point In conventional marine construction Representatives from across the North cloud images of subsea assets and envi- support terminology, metrology is the Sea energy sector, including senior ? g- ronments. By combining the 3D laser work done by surveyors and ROV to ures from oil majors, contracting com- data with precise underwater acoustic acquire various subsea measurements, The worksiteAll images courtesy DOF Subsea UKMarch 201752 MTRMTR #2 (50-65).indd 52 MTR #2 (50-65).indd 52 3/1/2017 10:19:04 AM3/1/2017 10:19:04 AM