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Centaur Spithead January 5th. 1772.
Memorandum
relating to the Triangular Courses
I should wish to have these Course bent, abaft the Common ones, with a Strong Tack, leading thro' a Block, secured to the fore Part of the Main Hatchway, (and forward to the Bowspreet, Just abaft the Gammoning.) To the same Clew (A) there should likewise be a Clewgarnet, to hawl it up to the Slings of the Main (of fore) yard.
On the quarters of the yard, there should be Blocks, thro which leachlines should be reeved, alost the yard, which being again reeved thro' Thimbles in the bringles of the Sail at B. would have their Standing Parts mde fast to the Main yard, between the Two Mainsails: of these there should be as many as, upon Tryal would be found Necessary, and when they are hawled up, I apprehend the Sail would lay exceedingly quiet, since the other Mainsail being then Set, the Wind could not have any Power over it.
This Sail may be either set or hawled up in any weather, without any Difficulty or Risk, since it may be always be Managed so as not to Shake or beat, which in Setting or hawling up, is the Cause of loosing many Courses, at Times, when their Preservation is as Essential as it is Difficult. now whenever either of those operations is required to be performed with the Square Sails, the Previously Setting the Triangular one, would render its Perfectly safe and easy, since, in the first Case,
the