DENHAM

Sir Henry Mangles ( son of Henry Denham of Sherborne, Dorset ). b. 28 Aug. 1800; entered navy April 1809; captain 17 Aug. 1846; F.R.S. 28 Feb. 1839; a younger brother of Trinity House 1841 to death; employed in the construction of charts 1822–52; inspector of steam-boat accidents; invented a valuable contrivance for steering a ship when disabled called Denham’s Jury Tiller, also Denham’s Rowlocks for rowing boats; knighted at Windsor Castle 26 March 1867; retired admiral 1 Aug. 1877; A.I.C.E. 4 March 1851; author of Sailing directions for the British Channel 1839 and other works. d. 21 Carlton road, Maida vale, London 3 July 1887. Min. Proc. I.C.E. xci , 460–62 (1888).