The Galatea was definitely there yesterday, not sure about today. Found out some more about it:
http://www.trinityhouse.co.uk/commercial_activities/commercial_services/thv_galatea.html"Trinity House’s Multi Functional Tender (MFT), GALATEA, delivered in 2007, has been designed with buoy handling, wreck marking, towing and multibeam and side scan hydrographic surveying capability. At 84m long with a service speed of 13 knots, she is fitted to the highest and most modern technical standards.
GALATEA is a state of the art vessel enhanced by many additional features including DPAA dynamic positioning, a range of high specification survey equipment, a 30t lift crane, a 1.2m² moon pool, a large working deck with the facility to lock containers on deck with plug in to 230v or 400v supply, a helicopter-landing pad and a high-speed workboat."