Tuning Guide for your Ullman J/27 Sail

Headstay Length
31" 4 1/8 from center of pin to center of pin.

Mast Butt Location
16" 6 3/4 from the transom/deck intersection to the back of the mast.

Rig Tension
Upper Shrouds: 3/16 wire = 1300 lbs.
Intermediate Shrouds: 5/32 wire = 300 - 350 lbs.
Lower Shrouds: 7/32 wire; light air = 1100 lbs.; medium air = 1500 lbs.; heavy air = 1800 lbs.

Hull
Fair keel, rudder and bottom.

Deck Layout
Add 12:1 boom vang and cascading backstay system. Make sure the deck layout is functional and easy to us.

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