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{{More citations needed|date=April 2020}}
{{Use dmy dates|date=June 2021}}
'''Sir John Henslow''' (9 October 1730 – 22 September 1815) was a [[Surveyor to the Navy]] in the British ([[Royal Navy]]), 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.<ref>[http://assets.cambridge.org/97805211/17999/excerpt/9780521117999_excerpt.pdf ''Darwin’s Mentor: John Stevens Henslow, 1796-1861''] S. M. Walters and E. A. Stow CUP</ref>

* 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

Cape Henslow on [[Guadalcanal]] is named after him.

From 1793 he worked jointly with [[William Rule (Surveyor of the Navy)|William Rule]].<ref name="Thr">{{cite web |title=Sir John Henslow (1730-1815) |url=https://threedecks.org/toc/nnr/prob%2011/1569/index.php?display_type=show_crewman&id=23272 |website=Three Decks |access-date=10 November 2022}}</ref>

Among the vessels he designed were the {{sclass|Acute|gun-brig|1}}s and four frigates to the same design, the first of which was {{HMS|Phoebe|1795|2}}. He also designed the [[List of gun-brigs of the Royal Navy#Bloodhound class|''Bloodhound''-class gun-brigs]] and ''Conquest''-class gun-brigs. The {{sclass|Laurel|post ship|1}} [[sixth rate]]s were a series of six ships built to his 1805 design.  Perhaps his smallest vessels were the two [[HMS Placentia (1789)|''Placentia''-class]] sloops of 42 tons burthen, which he designed for coastal patrol duties off [[Newfoundland Colony|Newfoundland]].

==Family==

His son John Prentis Henslow, solicitor, was father of [[John Stevens Henslow]].  He was also the grandfather of [[Francis Hartwell Henslowe]], who was the son of Edward Prentis Henslow.

==Notes and references==
{{reflist}}

{{DEFAULTSORT:Henslow, John}}
[[Category:1730 births]]
[[Category:People from Woolwich]]
[[Category:1815 deaths]]
[[Category:Surveyors of the Navy]]
[[Category:18th-century British engineers]]
[[Category:19th-century British engineers]]
[[Category:18th-century Royal Navy personnel]]
[[Category:19th-century Royal Navy personnel]]


{{UK-navy-bio-stub}}

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