(Beaufort) Common Wind Force Scale (Year of 1807)

force 0	(calm)
force 1	(light air)	Just sufficient to give steergage way

force 2	(light breeze)	With which a well-conditioned man-	1 - 2 kn.
force 3	(gentle breeze)	of-war with all sail set, and clean	3 - 4 kn.
force 4	(moderate breeze)	full would go in smooth water from	5 - 6 kn.
force 5	(fresh breeze)	With which a	Royals, etc.
force 6	(strong breeze)	well-conditioned	Single reefed top-sails & top-gallant sails
force 7	(moderate gale)	man-of war	Double reefed topsails, jib, etc.
force 8	(fresh gale)	could just carry	Treble reefed topsails, etc.
force 9	(strong gale)	in chase, full & by	Close-reefed topsails & courses

force 10	(whole gale)	With which she could scarcely bear close-reefed main-topsail & reefed fore-sail
force 11	(storm)	With which she would be reduced to storm staysails
force 12	(hurricane)	To which she could show no canvas
•

1st rate	(man-of-war)	ship-of-war with 3 gun decks below the spar deck with/without guns
2nd rate	(man-of-war)	ship-of-war with 3 gun decks below the spar deck with/without guns
3rd rate	(man-of-war)	ship-of-war with 2 gun decks below the spar deck with/without guns
4th rate	(man-of-war)	ship-of-war with 2 gun decks below the spar deck with/without guns
5th rate	(man-of-war)	ship-of-war with 1 gun deck below the spar deck with/without guns (frigate)
6th rate	(man-of-war)	ship-of-war with 1 gun deck below the spar deck with/without guns (frigate)

sloop-of-war	(3 masts)	has 1 gun deck of 18 guns or less, below the spar deck with/without guns
brig	(2 masts)	has 1 gun deck of 22 guns or less, below the spar deck with/without guns
cutter	(1 mast)	no gun deck, but the spar deck has 16 guns or less

LEATHER SEALER'S OFFICE, Londonderry, Vt.

April 8th 1826

Rory Ely Cole

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