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MAIB REPORT ON DRAGGING ANCHOR BY CELTIC SPIRIT

MAIB REPORT ON DRAGGING ANCHOR BY CELTIC SPIRIT

Marine Accident Investigation Branch, MAIB report on dragging anchor by Celtic Spirit, and the general cargo vessel’s subsequent collisions with Atlantic Explorer and Celtic Warrior, River Humber, England on 1 March 2018

At 02461 on 1 March 2018, the UK registered general cargo vessel Celtic Spirit dragged its anchor in heavy weather on the River Humber, England. The vessel subsequently collided with the research and survey vessel Atlantic Explorer and the general cargo vessel Celtic Warrior, which were also at anchor. All three vesselssustained shell plate damage, but there were no injuries and no pollution.
The MAIB investigation identified that:

•• Celtic Spirit dragged its anchor because insufficient anchor cable had been
deployed for the tidal range and environmental conditions experienced
•• It was not immediately identified that Celtic Spirit was dragging its anchor
because the anchor position monitoring was inadequate.
•• Celtic Spirit’s bridge watchkeeper did not alert Vessel Traffic Services or nearby
vessels that his own ship was dragging anchor.
•• Celtic Spirit was unable to manoeuvre in sufficient time to remedy the situation
because its engine was not on immediate readiness, and class conditions
relating to engine readiness while operating with only one anchor were not
followed or understood.
•• Lack of company guidance meant that there was an inconsistent approach to
engine readiness on board sister vessels in the same fleet.
•• Atlantic Explorer and Celtic Warrior were unable to weigh their anchors in the
time available.

Celtic Spirit’s owner, Charles M. Willie & Co (Shipping) Ltd, has taken action, with its fleet, to raise the standards of anchor watchkeeping and to clarify the term ‘main engine stand-by’. ABP Humber has completed an anchorage review and have implemented measures designed to mitigate the risk factors identified during theinvestigation. No recommendations have been made in this report.

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