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The fascinating story of John Harrison who, in the 18th century, believed he could make a clock that would work on board a ship—and so solve the problem of finding longitude at sea.
William Harrison
John Harrison
Adm. Sir Clowdisley Shovell
Rupert Gould
Army Doctor
Elizabeth Harrison
Capt. Ainsley
Muriel Gould
Captain Ainsley
Sir Kenhelm Digby
Laura Gurney
Nevil Maskelyne
Dr. Bliss
Lord Sandwich
Lord Morton
Dodo Gould
John Jefferies
Commodore Forrest
Christopher Irwin
Doctor
Rear Admiral
Waddington
Sir Charles Pelham
Capt. Man (uncredited)
Halley's Secretary (uncredited)