Thomas Harrison Butler

Thomas Harrison Butler, DM, FRCS(Eng) (19 March 1871 – 29 January 1945) was a British ophthalmologist and amateur boat designer.

Butler graduated with an MA from Corpus Christi College, Oxford in May 1902, and received a Doctorate of Medicine (DM) at the same time.

The work can now be done by computer, but when it was applied by the brain, hand and eye of Dr. Harrison Butler it produced famously sweet-handling boats, in the age of heavy weather helm.

"[3] In the days before computers, Harrison Butler was known to cut out paper cross sections of his hulls in order to calculate lines of symmetry and centres of mass.

He wrote two books, Cruising Yachts: Design and Performance,[4] and An Illustrated Guide to the Slit-Lamp,[5] and was the subject of a 1980s BBC TV documentary.