Coxswain/Mechanic Hewitt Clark of Lerwick joined the crew in 1965, and was reserve mechanic from 1966 to 1967. He then served as mechanic until his appointment as coxswain/ mechanic in 1979.

Hewitt was awarded a bronze medal in 1983 for the rescue of the crew of three and the saving of the yacht Hermes of Lune which was dragging her anchor in North East Mouth, Out Skerries in a south westerly hurricane, rough seas and torrential rain on 21 September 1982. In 1989 he was awarded a bar to his bronze medal for rescuing three crew members from the fishing vessel Boy Andrew which was aground on rocks at Trebister Ness on 13 January.

The Thanks of the Institution inscribed on vellum was accorded to him in recognition of the leadership, seamanship and boathandling skill displayed by him when 33 crew members were taken off the fish factory ship Azu, which was stranded on a rock and rolling heavily at Brei Wick in an easterly gale on 28 October 1989.

Hewitt, who is married with three children, also works part-time as a skipper of the Lerwick Harbour pilot vessel.

His son, William, is a crew member of the Lerwick lifeboat..