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North Sails RESOURCES

A Class Catamaran Tuning Guide

The settings below are recommended for Fiberfoam 14 / DNA masts and 80 kg skipper.

Download PDF

MAST

UPWIND

DOWNWIND

WIND SPEED

Knots

SPREADER RAKE

PREBEND

CUNNIGHAM

BATTENS
(Top 4 battens)

MAST
ROTATION

CUNNIGHAM

MAST
ROTATION

TRAVELER

(off the center line if foling)

5-8

42 mm

20 mm

OFF

Light

45-50 degrees

OFF

80 degree
if foiling

180 mm

8 – 12

56 mm

27 mm

15 – 40%

Light
Medium (10+ kts)

35-45 degrees

10 – 25%

70 degrees

220 mm

12 – 16

60 mm

32 mm

100%

Medium

25 – 30 degrees

60 – 75%

65 degrees

300 – 400 mm

16 – 20

75 mm

38 mm

100%

Medium

Heavy (18+ kts)

20 – 25 degrees

80%

80 degrees

500 mm

20 – 24

90 mm

42 mm

100%

Heavy

20 – 25 degrees

80%

80 degrees

500 mm (Hang on!)

Lighter skipper will slide settings up the range one and heavier skipper will stay down range one setting for best performance. (70kg is light. 90kg is heavy)

Mainsheet should be tensioned enough to have an even twist profile from top to bottom and all tell tails should fly evenly.

Class Experts

Mike Marshall

Portsmouth, Rhode Island
mike.marshall@northsails.com

Derek Scott

Auckland, New Zealand – Sales Office
Auckland, New Zealand – Sail Loft
Derek.Scott@northsails.com