McDermott Selects Sonardyne Subsea Navigation for Lay Vessel 108

Sonardyne Inc., Houston has supplied acoustically-aided inertial navigation technology for McDermott’s Lay Vessel 108 (LV 108).

The Ranger 2 Pro DP-INS system is being used to support touchdown monitoring surveys of submarine cables, umbilicals and pipelines and as an independent position reference for the LV 108’s Kongsberg dynamic positioning  system.

McDermott’s LV 108 entered service in 2015 and is currently on contract in the Ichthys field, Western Australia.

The equipment supplied to McDermott for the LV 108 included Sonardyne’s INS sensor co-located with the company’s sixth generation (6G) HPT acoustic transceiver. This hardware was installed on one of the vessel’s two Kongsberg through-hull deployment machines and interfaced directly with the vessel’s DP system, also supplied by Kongsberg.

Jason Peters, global survey manager at McDermott, said: “The decision to equip the LV 108 with Sonardyne’s DP-INS reflects our approach to fleet expansion and renewal. This strategy focuses on ensuring our vessels and acquisitions keep abreast of the industry’s
growing demand for safe, efficient, cost-effective installation solutions for field developments across all water depths.”

“DP-INS is a mature, field proven technology that addresses industry’s nRalph Galleed for a third, independent DP reference,” said , technical sales manager at Sonardyne in Houston.

“The LV 108 joins a significant fleet of vessels that now depend upon our acoustic inertial technology for safer and more efficient dynamic positioning operations.”