John Henslow (Surveyor of the Navy)
Sir John Henslow was a Surveyor to the Navy in the British, a post he held jointly or solely from 1784 to 1806.
Career
He was 7th child of John Henslow, a master carpenter in the dockyard at Woolwich.- 1745 Apprenticed to Sir Thomas Slade
- 1762 Master Boat Builder at Woolwich
- 1771 Assistant Surveyor to the Navy
- 1784 Surveyor to the Navy
- 1793 Knighted
- 1806 retired to Sittingbourne, Kent
From 1793 he worked jointly with William Rule.
Among the vessels he designed were the s and four frigates to the same design, the first of which was. He also designed the Bloodhound-class gun-brigs and Conquest-class gun-brigs. The sixth rates were a series of six ships built to his 1805 design. Perhaps his smallest vessels were the two Placentia-class sloops of 42 tons burthen, which he designed for coastal patrol duties off Newfoundland.