I met DH about 3 years ago and he was very interested to hear about my Grandad's contact with him! Grandad also designed hulls for a number of WW2 fast coastal patrol boats, downed-pilot rescue dinghies dropped from planes, and such like. His slide rule was about 5 ft long with a pop-up magnifier on the sliding index (forgot its proper name). Boss of a local theatrical chandler (very useful and good prices for nuts, bolts, paint, tools etc) has one of my Grandad's Virtue Class. All teak, very pretty in and out, and he goes on amazing adventure and discovery journeys, like up into the Arctic, around Bear Island and the Maelstrøm, the world's bleakest places, then does great slide-show lectures with lashings of Badger Beers for guests. A character not unlike Sir Ranulph Twisleton Wyckhenham Fiennes.
Hid did not design any Micros, not even Scootercars, and never went to a National Rally, neatly steering the thread back towards its topic!