Granville crashed after control system failed

High-speed craft Granville (IMO 9356476) crashed into a pontoon and sailing yacht Shamu on May 13th 2018 after its control system failed, a Port of Jersey marine incident report has found.

Granville was making its approach to its berth in St Helier Harbour at No.3 berth, when it failed to stop and made contact with the sailing yacht Shamu, which was moored on the south end of Albert Pontoon, overhanging the edge of the pontoon. There were no reported injuries and neither vessel suffered significant damage. The pontoon adjacent suffered some damage to the outboard side.

The vessel was making its way into the port at seven knots, having come from Sark. During the berthing procedure the master of the boat transferred control onto the port-side wing controls on the outside deck of the vessel. As he went to put the Granville into reverse, he realized that the lights, which indicated the successful transfer of control, had not come on. He immediately shouted to his staff captain, who was still at the interior controls, to put the vessel into reverse but the latter was not able to do so in time. At around three knots, the vessel then hit the 10m yacht Shamu and the pontoon to which it had been moored. The accident caused damage to the exterior of the yacht, its wind turbine mast, deck, deck ladder and handrail.

The Ports of Jersey found that the vessel’s speed of seven knots was a contributing factor, as the speed limit was five knots, and recommended that the transfer of control to the ‘wing’ should take place earlier to allow for any potential failures. It was later discovered that a computer-processing unit was to blame for the failure. The unit was replaced. The control system suffered another failure while it was in Sark later in the year, and the Granville was taken out of service while it was repaired. 2006-built, France-flagged, 325 gt Granville is owned and managed by France Govt Manche of Cedex, France.

http://www.ports.je/SiteCollectionDocuments/GRANVILLE%20ALLISION%20Report%20-%20Nov18.pdf