I,J,P,E

[Chip]

I am a novice who is unfamiliar with the meaning of these measurements. What measurements do each of these letters represent?Thanks for your help.

 

[Doug T.]

IJPE

I and J describe your foretriangle:- I is the vertical distance from the highest hoist point of your jib halyard to the boat's sheerline abaft the mast (basically, down to the deck level)- J is the horizontal distance from the front of your mast to the jib tack attachment point.P and E describe your mainsail:- P is the vertical distance from your highest mainsail halyard hoist point to the top of the boom- E is the horizontal distance from the back of your mast to the furthest possible clew attachment point on your boom. (Not to the end of the boom, because you need room for shackles, outhaul blocks and whatnot.)

 

[Greg Sampson]

Definitions....

I - measurment from the intersection of the forestay and top of the mast down to the deck of the boatj - measurement from the forestay attachment at the the bow to the front of the mastP - Max Luff - measurement from the top of the mast (as far as your main halyard will go up) to the top of the boom.E - Max Foot - measurement from the back of the mast to the clew at its aft-most position.Hope this helps,Greg

 

[Tom Wootton]

Why?

Does anyone know why those particular letters are used? I can't think of any association between the letters and the dimensions they refer to, so I have trouble remembering which is which.

 

[Claude L.-Auger]

Look in the archives (photo forum)

Under Sailboat specs. Sometimes last year I posted an old diagram that shows where all of these measurements are taken and then some. Welcome to the sailing fraternity. May you enjoy it as much as we do. Happy sailing.