The Reffée Buoy outside the QEII Marina was replaced this week by a specialist vessel, upgrading one of the Bailiwick's key navigational markers.
Trinity House, the official body for lighthouses for much of the British Isles, used the THV Patricia to replace the buoy. Its vessels carry out the required works around the English and Welsh coasts, such as buoy positioning and surveying shipwrecks.
Patricia was required because of the weight and size of the buoy - it has a 20-tonne main crane capacity and a Dynamic Positioning System, which allowed the crew to hold the vessel in an exact position while it moved the new buoy into place.
This work was assisted by the Sarnia Workboat.
The buoy requires replacement every three years due to wear on the mooring chain holding, with other maintenance work scheduled to take place while Patricia is in local waters.
The vessel visited Jersey on 10 August before returning to Guernsey on 11 August to carry out further routine work to other important navigational aids.
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