With 4 of 8 diesel generators running and connected to a closed ring bus, and 7 of the 8 thrusters selected to DP, a DP equipment class 3 MODU was […]
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 communications@legacy.imca-int.com
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
There – but not really there
This DP event occurred on a DP equipment class two supply vessel whilst carrying out cargo operations on the starboard side alongside the asset and working at the lee side […]
Equipment Class 3, even if you operate as ‘Class 2’
This case study examines a DP incident on an equipment class 3 multi-purpose vessel while operating in good conditions. The vessel was set up according to their class-approved FMEA in […]
Line of Sight
This case study covers events onboard a DP equipment class 2 vessel whilst holding position in a turbine field, with three position reference systems selected into DP – DGPS, HPR […]
DP Drill Scenario
DP emergency drill scenarios are included to assist DP vessel management, DPOs / Engineers, and ETOs in conducting DP drills onboard. The intent is that the template can be used […]
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 […]
Prepare for 2025 Solar Activity
This case study covers events that occurred on the same vessel, 8 months apart. The DP equipment class 2 vessel is fitted with six position references systems, 3 DGNSS, 2 […]
You’ve got the ASOG, so now you’ve got to follow it
This case study examines an DP incident that occurred on an equipment class 2 MODU, during well intervention operations. The unit was operating in open bus configuration with all four […]
Duty/not duty, which is the question?
This DP event occurred on an FPSO. The FPSO is fitted with one bow tunnel thruster and two stern azimuth thrusters; however, at the time of the event the starboard […]
Know your vessel capabilities and when to stop!
With all engines and thrusters engaged, a DP equipment class 2 pipe supply vessel (PSV) was operating in open bus configuration. The vessel was engaged in cargo operations with a […]
Button Trouble
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 […]
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 […]
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