The Unexpected Freeze of Your Critical Navigation System Imagine being in the middle of a crucial drilling operation when suddenly, all three of your state-of-the-art DP system gyros fail. That’s exactly what happened during a recent drilling venture—within just five minutes, the gyros, essential for maintaining your vessel’s heading, froze, leaving the drillship’s DP model…
Overview This case study analyzes a DP incident on a class 2 MODU during well intervention operations. The unit was in open bus mode, with all four thrusters active and four out of the six generators connected, two on each side. What occurred? Engineers requested the DPOs to deselect and stop Thruster No.1 from the…
Overview On an FPSO, the DP event took place. Although the FPSO has two stern azimuth thrusters and a bow tunnel thruster, the bow thruster was turned off for continuous diving operations during the event, and the starboard aft thruster was not in use because of upgrades. From a light diving craft (LDC), diving was…
A comprehensive review has been carried out to assess incidents that jeopardize DP operations, derive valuable lessons, and prevent future dangerous occurrences. These case studies are sourced from the IMCA DP Event Bulletin. Overview A DP equipment class 2 PSV was operating in open bus mode with all engines and thrusters engaged. The vessel conducted…
