Here is an excerpt taken from http://members.lycos.co.uk/Firthview24/western.htm
Highland Seabird In 1976, Western Ferries took delivery of a high-speed catamaran, the first of her type to be seen in the UK. Her first season was spent on the Clyde, before moving to a new base at Oban in 1977. From there she ran services to Fort William, Mull, Iona, and Ireland. She spent her winters either on charter work or laid up. During March 1980 she spent a few days on charter to Sealink, operating to the Isle of Wight. A further charter in 1982 saw her spent some time based on the Mersey. Further charters around the UK followed, before she was sold out of the fleet in March 1985. She operated in the Channel Islands as Trident 2, later being transferred to other French owners.