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ANATOMY OF A SAIL

Rig Terms  
Rig Terms
EY = Mizzen boom length Distance from the back side of the mizzen mast to the black band at the end of the mizzen boom.
PY = Mizzen mast length Distance from the top of the mizzen boom to the black band at the top of the mizzen mast.
E = Main boom length Distance from the back side of the main mast to the black band at the end of the main boom.
P = Main mast length Distance from the top of the main boom to the black band at the top of the main mast.
I = Deck to mast length Distance from the deck to the intersection of the forestay and and mast.
J = Forestay to mast length Distance from the forestay at the deck to the mast at the deck.

 

Sail Terms

Sail Terms
A = Head The top corner of a sail is referred to as the Head.
B = Clew The trailing aftercorner of a sail is referred to as the Clew.
C = Tack The lower leading corner of a sail is referred to as the Tack.
D = Luff The leading edge of a sail is referred to as the Luff.
E = Foot The lower edge of a sail is referred to as the Foot.
F = Leech   The trailing edge of a sail is referred to as the Leech.
G = Batten Pockets Sewn perpendicular to the Leech, Batten Pockets house battens which keep the Leech flat.
H = Roach The extra material between the straight vertical line in the picture and the Leech is referred to as the sail's Roach. It gives extra drive to the sail when running or reaching.

 


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