Investigation Report
Parting of mooring lines from liquid petroleum gas tanker Havkong while loading butane
Parting of mooring lines from liquid petroleum gas tanker Havkong while loading butane
- MAIB
- Investigation Report
- Unknown
- Marine OperationsVessel and Mooring
- Loss of station keepingMechanical failureRisk managementVessel grounding
- Cargo transferMooring operationsTowing
- Mooring linesWinchWire rope
- Alarm managementEmergency responseOperating and work proceduresRisk assessment
- Marine industry
- Port and quaysideVessel
Summary
Joint investigation of Havkong’s breakaway during butane loading at Braefoot Bay. It examines ineffective mooring geometry, overloaded winch brakes, severe-weather procedures and emergency coordination. Loading arms disconnected without cargo spillage. Vessel-specific mooring analysis, tug arrangements and emergency planning are considered alongside modelling of potential release consequences.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Mechanical failure; equipment failure.
Classifications: Risk management; risk evaluation.
Classifications: Vessel grounding.
Classifications: Cargo transfer; cargo handling.
Classifications: Mooring operations; berthing; unmooring.
Classifications: Towing; towage.
Classifications: Mooring lines; mooring rope; mooring wire.
Classifications: Winch; winches.
Classifications: Wire rope; steel wire rope.
Classifications: Alarm management.
Classifications: Emergency response; emergency preparedness.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Port and quayside; quayside; harbour; harbor.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
An investigation into mooring-line failures on an LPG tanker during butane loading.
Themes: marine operations, vessel and mooring.