Unintentional deselection of a DP control function
- DP Event
- Published on 30 June 2016
- Generated on 22 February 2025
- DPE 02/16
- 1 minute read
Observation
Vessel operators should note that this type of event continues to occur and might consider whether additional barriers should be put in place.
Considerations
- This event highlights the possible consequences of deselecting critical DP system buttons. Significant changes to any system should not be made during critical phases of an operation.
- It was considered highly likely that the DPO was performing multiple tasks when the surge button was unknowingly deselected.
- Tools are available within position reference systems to monitor vessel position and alarm if the vessel moves outside a set limit.
- Vessel operators should note that this type of event continues to occur and might therefore consider whether additional barriers should be put in place for critical switches.
Latest DP incidents
-
Thorough preparation is key
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 set up in Green mode whilst on standby.
DPE 03/24
5 November 2024
Incident
-
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 in the drift-off position.
DPE 03/24
5 November 2024
Incident
-
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.
DPE 03/24
5 November 2024
Incident
-
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 and Fanbeam.
DPE 03/24
5 November 2024
Incident
-
DP Drill Scenario
DP emergency drill scenarios are included to assist DP vessel management, DPOs / Engineers, and ETOs in conducting DP drills onboard.
DPE 03/24
5 November 2024
Incident
The case studies and observations above have been compiled from information received by IMCA. All vessel, client, and operational data has been removed from the narrative to ensure anonymity. Case studies are not intended as guidance on the safe conduct of operations, but rather to assist vessel managers, DP operators, and technical crew.
IMCA makes every effort to ensure both the accuracy and reliability of the information, but it is not liable for any guidance and/or recommendation and/or statement herein contained.
Any queries should be directed to DP team at IMCA. Share your DP incidents with IMCA online. Sign-up to receive DP event bulletins straight to your email.