Racing sails


I = Height of headstay termination above the sheer line

J = Distance between the headstay termination at the deck and the front of the mast at the sheer line.

P = Distance between black bands on the mast, or the maximum luff length of the main.

E = Distance between black bands on the boom, or the maximum foot length of the main

PY & EY are similar to P & E, but indicate mizzen dimensions

(Please note that the measurement rules for rig dimensions vary from class rule to class rule and from measurement rule to measurement rule. Many yacht designers use different definitions as well. These definitions are general enough to provide guidelines to approximate your sail area. None of the information here is guaranteed to be accurate, as manufacturers often change rig dimensions without notice. You should physically measure your boat and record precise measurements to calculate accurate sail area figures.)

Sail Area Calculations
(Again, these formulas will give approximate sail area calculations)

Mainsail Area = P x E *1.12 / 2

Headsail Area = ( Luff x LP ) / 2               OR      ( I * J * LP%) / 2

( LP is the shortest distance between the clew and the luff )
Approx. 150% Genoa Area = ( 1.5 x J x I ) / 2
Approx. 135% Genoa Area = ( 1.35 x J x I ) / 2
100% Foretriangle = ( I x J ) / 2

Approx. Spinnaker Area =  1.8 x J x I

Thank you for giving us this opportunity to be of service to you.


Sails are highly customised products designed to serve you, your boat, and your sailing goals as exactly as possible. To do this best, we need a little information about your sailing plans to develop the most appropriate sail quote for you.


For example, in the comments section, you might tell us for what sort of sailing you will use the sail. Will it be coastal or blue water cruising? Club racing? Grand Prix racing? What sort of wind range and wave conditions do you anticipate being the norm when you use the sail? Any information you can give us along those lines will be of great help in tweaking the sail design to your needs.

PLEASE NOTE: This is NOT an automated quote system. Please complete the form below, and we will contact you with a price for the sails via your email address within 24 hours.

Download Our Measurement Form
Postal address*
E-mail address*
Phone Number
Design of boat*
Boat's name
Sail required *
Mainsail Jib Genoa Asymetrical spinnaker Symetrical spinnaker Code zero Staysail Gennaker Drifter or reacher Windseeker Trysail Storm jib
Gaff Mainsail
Type of sail*
Performace Crusing Blue Water Cruising Club Racing Top Racing
LP (%)
ISP (Spinnaker)
JSP (Spinnaker)