Trinity House are looking for suppliers to provide a timely cost effective inspection, maintenance and repair service for diesel engines and associated equipment and systems on board Trinity House Vessels Patricia, Galatea, and Alert plus additional ad-hoc maintenance and repair service for other Trinity House Vessel Engines. The successful tenderer(s) shall be required upon request to attend the vessel(s) in order to carry out such maintenance and/or repairs under the co-ordination of Trinity House Superintendents or Chief Engineer Officers. Maintenance and repairs may be required at any port in the United Kingdom, but most frequently at the ports of Harwich, Essex and Swansea, Wales.