4d Subsea Sonar Usage At Alvheim

摘要

Atthe Alvheim oil and gas field, surface and subsea positioning services were used during the installation of the Alvheim floating, production, storage and offloading vessel. The surface positioning was provided by Fugro's Starfix.HP and SkyFix-XP high-precision DGPS positioning systems. These two state-of-the-art systems utilise GPS carrier-phase computational techniques combined with carrier-phase corrections from the Fugro Reference Station Network (Starfix.HP). In addition to the surface positioning, CodaOctopus utilised their Echoscope 4D sonar for subsea positioning during the hook-up operation.