 Calshot Salar, was owned by Dr W."bill" Souter and operated during filming by a Canadian, Captain Robin Blair Crawford, who also had a position as an extra in the movie and in addition was the lead safety diver at Loch Etive.At the insistence of her owner Calshot Salar had her original RAF number painted on the hull for the movie.After numerous adventures in both home and overseas waters Calshot Salar was sold and eventually became a houseboat at Shoreham.