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formula,s for the mainsail
it is important to keep this sequence of the formula,s
clew down =
(leech X leech)+(foot X foot) -
(dia.peak/tack X dia.peak/tack):(2 X luff)
biggest width in the foot or clewcut = 
extraction of roots
(foot X foot)-(clewdown X clewdown)
leechlenght -peak up =
(leech X leech)+(dia.throat/clew X dia.throat/clew ) -
(top X top):(2 X leech)
peak up = leech- (leech - peak up)
biggest width in the head or peakcut =
extraction of roots
(head X head) - (peak up X peak up)
number of cloths in the foot =
biggest width in the foot : cloth width
number of cloths in the head =
biggest width in the head : cloth width
number of cloths in the luff =
number of cloths in the foot - number of cloths in the head
luff gore,s =
leech - (peak up+clew down) : number of cloths in the luff
head gore,s =
peak up : number of cloths in the head
foot gore,s =
clew down : number of cloths in the foot
surface =
(luff X luff : 2 )+(head X head : 2 )
below you find tabel were you can fill in the outcome,s
remember cloth number one is the cloth that holds the clew
work your way down to the "tackcloth".
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