During the build of Henriette Marie, the production of the first iron yacht was started at Charles John Mare's shipyard in Blackwall. Her designer, Thomas Waterman, had already produced commercial vessels, both steam and sail. To produce the racing cutter, he drew significantly on the published works of John Scott Russell, especially the waveline theory, so when the Mosquito was christened and launched in 1848, she became an immediate threat to larger yachts. Although she did not take part in the 1851 RYS £100 Cup, the Mosquito won the 1852 Queen's Cup and in that year beat the larger 178-ton America in another race 'round the Isle of Wight. The Mosquito's "easy and hollow bow, large displacement, well-raked post and deep keel" (in George Lennox Watson's own words) were proven right by her long and successful racing career; Watson followed: "If the Mosquito had been the product of a foreign yard, she would have created a greater sensation than the schooner America, for she exhibited quite as much ingenuity in her design". It is therefore unfortunate that she did not immediately or substantially influence cutter design, although it is important to note that 40 years after her launch, she became one of the very first yachts to be converted to pilotage. She served at Barrow-in-Furness and closely resembled other pilot cutters of that period.
body plan and half-breadth plan of the Mosquito (Badminton Library, volume 22, 1894)
the rig of the racing cutter Mosquito (print from Montague John Guest's memoirs of the Royal Yacht Squadron, 1902) Mosquito
year of launch: 1848
builder: Charles John Mare and Company (Blackwall, UK)
designer: Thomas Waterman
Length Over All: 21.44m
displacement: 49 tons
rig: fore-and-aft gaff cutter rig with square lug topsail and two headsails