See also: a film about Harrison, and his designs for a sea-voyage-proof clock.<p><a href="http:&#x2F;&#x2F;www.imdb.com&#x2F;title&#x2F;tt0192263&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.imdb.com&#x2F;title&#x2F;tt0192263&#x2F;</a><p>(I enjoyed the film many years ago, and I can&#x27;t recall what, if anything, it has in the way of technical details.)