Alerts iconPosition reference systems – a timely reminder

The IMCA Marine DP committee has identified a trend of DP station keeping events relating to the incorrect use or selection of PRSs.  Events reported to IMCA include incidents, where station keeping capability has been lost and undesired events where redundancy has been compromised. Recent Events Reported to IMCA Include the Following Learnings: Incorrect selection … Continue reading “Position reference systems – a timely reminder”

Alerts iconInadequate shallow water lay-up reactivation procedures

Comments from the Report The heat exchange system is poorly designed and without redundancy for half of the switchboard.  Design flaws were compounded by the introduction of turbidity and silt into the cooling system.  The vessel was idle for some time in shallow water and the systems were not adequately preserved.  There was biological fouling … Continue reading “Inadequate shallow water lay-up reactivation procedures”

Alerts iconCase study – Switching from auto DP to IJS (independent joy stick) mode caused loss of control

Case narrative A vessel collided with the working platform on a wind turbine transition piece. The incident occurred during worsening weather conditions. The vessel was on auto DP, when it was decided to pull off. Whilst moving away from the turbine, the DP operator switched from auto DP to independent joy stick (IJS) mode. The … Continue reading “Case study – Switching from auto DP to IJS (independent joy stick) mode caused loss of control”

Alerts iconLeak in fuel supply line causes engine to shut down – DP undesired event

Comments from the report: The vessel was employed within the renewable energy sector, no details were given of the drilling activities. A fuel leak developed in a corroded supply pipe to the port main engine.  This caused air to be drawn into the system and the engine to shut down.  Redundancy worked as designed.  The … Continue reading “Leak in fuel supply line causes engine to shut down – DP undesired event”