Rupert Gould with H-3
The man who restored Harrison's clocks to proper working order shared an equal billing with him in the TV adaptation of Longitude
, and indeed his own labours and dedication were comparable to the clockmaker's. Rupert Gould
was a navigation officer in the Royal Navy, and so would have had a particular interest in the story of Longitude.
As well as a definitive guide to maritime clocks, he wrote books on sea serpents, "unexplained facts" and the Loch Ness Monster.
Time Restored by Jonathan Betts - summarised in this excellent article
The Marine Chronometer by Rupert Gould