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”

Alerts iconRoutine maintenance leads to loss of thruster – DP undesired event

Comments from the report: During a routine weekly maintenance operation, a ships engineer took an oil sample from the starboard azimuth thruster sample point, which is a small valve located on the line to the pressure switch.  The location of the oil sample point on the line to the pressure switch creates a risk of … Continue reading “Routine maintenance leads to loss of thruster – DP undesired event”