A Dynamically Positioned vessel experienced a loss of dynamic positioning (DP) control while installing cable within a wind farm.The incident occurred during the cable lay operation. The DP manual override […]
DP Event Bulletins
DP station keeping event bulletins enhance the traditional reporting and analysis of dynamic positioning station keeping events and incidents. They ensure that the industry is provided with prompt feedback, including anonymous factual case studies of events reported to IMCA.
Individual DP events are available individually online, tagged and searchable, while the traditional PDF collections are also available for download.
To be included into the subscription list for the DP Event Bulletin emails, email [email protected]
Submit a Report
All members are encouraged to contribute relevant DP information by using our reporting template which is available under Submit a Report where you will also see details on how to submit your information.
IMCA Contact
Richard Purser
Technical Adviser - Marine
Contact
DP Events
Closed Bus – PMS Failure Leading to Thrust Limitation of All Thrusters
A DP vessel was operating with its power plant configured in closed bus mode. This setup included three active generators: No. 2 port, No. 4 centre, and No. 6 starboard. […]
Push / Force Off
This case study examines an incident involving a vessel during cargo operations adjacent to a fixed platform in the North Sea. The event in focus is a push-off incident, where […]
The Cascade Effect
This case study examines a critical incident aboard a Dynamic Positioning (DP) vessel, five years post-construction, which experienced a significant power management failure. The incident unfolded during what was considered […]
Drill Scenario
DP emergency drill scenarios are included to assist DP vessel management and DPOs / Engineers and ETOs to conduct DP drills onboard. The intent is that the template can be […]
Position Reference Problems again! – Dangers of recalibrating
Overview A diving vessel was operating in approximately 25m of water depth. Four Position Reference Systems (PRSs) were in use, two DGNSS & two HPRs, weighting of the PRSs was […]
Follow the ASOG – It’s there for a reason
Overview A DP vessel was conducting remotely operated vehicle (ROV) operations beside an oil platform. As this was a Critical Activity Mode (CAM), the vessel was operating a split bus […]
Read the room – Port side azimuth thruster shutdown and subsequent partial blackout on DP vessel
Overview This report provides a detailed technical analysis of a series of incidents involving the unexpected shutdown of a port side azimuth thruster and a subsequent partial blackout on a […]
Thrust Incident Due to Dynamic Positioning System Mode Change on Construction Vessel
Overview This case study examines an incident involving a Construction vessel that experienced an insufficient thrust alarm while holding Dynamic Positioning (DP) position during offshore installation crew transfer operations. The […]
DP drill scenario
DP emergency drill scenarios are included to assist DP vessel management and DPOs / Engineers and ETOs to conduct DP drills onboard. The intent is that the template can be […]
News in brief from the DP Committee
M190 Code of practice for developing and conducting DP annual trials programmes and M191 Code of practice for DP annual trials for mobile offshore drilling units, published June 2023 M117 […]
Important PRS considerations when operating close to an asset that is not rigidly fixed to the seabed
1 Overview It has come to the attention of the IMCA DP Committee that, in recent years, there have been a number of collisions between vessels undertaking DP operations near to […]
What have the Alarms ever done for me?
1 Overview A DP vessel with a two-way redundant split was engaged in cargo operations alongside a fixed platform, the environmental conditions at the time were marginal however the vessel was […]
Distraction – Don’t text and navigate
1 Overview A dynamic positioned (DP) PSV was conducting operations near a drilling rig in the North Sea. The DPO of the PSV was using their phone while they were […]
Incorrect entry of DP Rotation Point offsets
1 Overview A vessel was engaged in Driving and ROV work over a live manifold. During ROV dive the vehicle had taken receipt of a hot stab connected to a recently […]
News in Brief from the DP Committee
1 Station Keeping Events STATS: The information below is a snapshot of the DP Station Keeping events to date for 2023. Figure 6‑1 Event Stats The percentage of DP incidents […]
Case Study – Human Factor – Position Reference Confusion
1 Overview A DP 2 vessel was engaged in diving operations and had deployed an ROV. The vessel was on Auto DP with two DGNSS and two HPR position references […]
News in Brief from the DP Committee
1 Information Notes 2 Codes & Recommended Practice 3 Station Keeping Events STATS: The information below is a snapshot of the DP Station Keeping events to date for 2023. The percentage of DP […]
151 post(s)