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Sailboat Rig Dimensions and Specs: Z

Go to: I, J, P, E, ISP and JSP definitions


BOAT	I	J	P	E	ISP	JSP	PY	EY

ZAP 26	30.0	10.0	34.0	11.0
ZAP 26	30.0	10.0	34.0	11.0	30.0	10.0
ZAPATA II	52.0	18.5	47.0	18.2			8.5	26.6
ZEE 37	43.2	15.5	39.7	18.8

How to Calculate Sail Areas

The following formulas will give you approximately areas for:

Mainsail = (P x E) / 1.8 (1.6 for racing profile mainsails)

155% Genoa = (( J x I ) / 2) x 1.65

135% Genoa = (( J x I ) / 2) x 1.44

100% Jib = ( I x J ) / 2

Racing Symmetrical Spinnaker = 1.8 x J x I

Racing Asymmetrical Spinnaker = 1.8 x J x I

Cruising Asymmetrical Spinnaker = 1.90 x ((J x I)/2)

Definitions

"P" is the luff length of the mainsail, measured along the aft face of the mast from the top of the boom to the highest point that the mainsail can be hoisted or black band.

"E" is the foot length of the mainsail, measured along the boom from the aft face of the mast to the outermost point on the boom to which the main can be pulled or to the black band.

"I" is measured along the front of mast from the genoa halyard to the main deck. The main deck is where the deck would be if there were no deckhouse.

"J" is the base of the foretriangle measured along the deck from the headstay pin to the front of the mast.

"JSP" is the length of the spinnaker pole or the distance from the forward end of the bowsprit (fully extended) to the front face of the mast.

"ISP" is measured from the highest spinnaker halyard to the deck.

"PY" and "EY" are, respectively the luff length and foot length of the mizzen of a yawl or ketch measured in the same way as for the mainsail.

"IY" is the measurement from the staysail halyard to the deck.

"JY" is the measurement from the staysail stay to the front face of the mast.

"LP" is the shortest distance between the clew and the luff of the genoa.

Sailboat Rig Dimensions

We at Mauri Pro Sailing are fully committed to be your sailboat hardware specialist not only providing the sailing community with a comprehensive and easy to use web site but with all the appropriate technical information that you might need to select sailboat hardware and sailing equipment.

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