![]() The decision to change over in a position in close proximity to the transition piece was inconsiderate. ![]() Officer of the watch handover procedure was unclear to those involved.All systems were found in good working condition without any technical defects found. Note: after the incident the vessels DP, IJS and manual thruster control systems were extensively tested. They were ultimately successful in regaining control of the vessel but were unable to prevent collision with the transition piece and its work platform. The crew attempted to gain control of the vessel using the IJS. The action of the environmental forces started to drift the vessel back towards the turbine. The thrusters’ set point went to zero for the deselected surge, sway and/or yaw axis the moment the change was made, leaving the vessel without axis control, approximately 120m from the turbine. Whilst moving away from the turbine, the DP operator switched from auto DP to independent joy stick (IJS) mode. The vessel was on auto DP, when it was decided to pull off. ![]() The incident occurred during worsening weather conditions.
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