Vessel gangway rolled off platform tower and fell to the quayside in high wind

During stormy weather, there were sudden and violent gusts of wind of greater than 50 knots, resulting in a vessel alongside being pushed off the quay. This resulted in the gangway rolling off the platform tower and falling approximately 5.2 m to the quay.

The vessel’s side of the gangway remained attached to the vessel.

There was no-one nearby at the time; no-one was harmed; however, the incident had the potential to cause fatal injury.

The incident occurred when a vessel was in port for maintenance.

A shipyard’s gangway was attached to the vessel’s deck and placed on top of a stairway tower platform on the quayside. 

The gangway was only fixed at the vessel side and could move via rollers on the platform side.

The platform was used to assist with tidal height variation.

• The potential risk of a falling gangway was not considered or recognised. There was no previous history of issues or incidents with this setup, the task was considered as a low risk routine duty by the shipyard (IMCA bold).
• During sudden, violent gusts of wind, the mooring ropes stretched allowing the vessel to move away from Yokohama fenders and quay. Mooring ropes worked as designed.
• In response to the available weather forecast, precautions where put in place, including additional mooring lines, additional manpower to monitor mooring lines and gangway watchman closely observing gangway movements.
• The was no consideration for safety in design. The positioning of the stairs in front of the platform forced personnel to pass underneath the gangway which can be classified as supported load.
• The incident had the potential to cause a fatal injury.