Sonardyne INS for Norway & Ghana
Innova, the specialist Norwegian subsea engineering and technology organisation, has commissioned Sonardyne combined Sprint Inertial Navigation Systems and Syrinx Doppler Velocity Logs for two new ROVs being built by IKM Technology of Bryne.
The joint equipment assemblies will provide tightly coupled navigation data in support of a wide variety of proposed survey and inspection missions in depths down to 4,000m.
Each all-in-one Sprint-Nav design assemby is said to conserve payload space while improving subsea navigation integrity. Their design also features a high-accuracy pressure sensor which can be removed for re-calibration without affecting basic operations.
Meanwhile, Sonardyne in Aberdeen reports a Sprint INS has also recently been operational in offshore Ghana off the west coast of Africa as part of a deepwater ROV 3D laser survey carried out by Scottish Adus DeepOcean and its local Ghanaian subsidiary on behalf of Tullow Oil. Survey operations covered 12 drill centre locations and a total of 27 metrologies in depths between 800 and 1,800m. Used in conjunction with a depth-rated 2G Robotics ULS 500 Pro Laser, the system reportedly exceeded expectations by producing accuracies approaching 1cm in a dynamic mode.
By David Goodfellow
