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TWS – True Wind Speed<br />
24<br />
<strong>Mumm</strong> <strong>30</strong> <strong>Tuning</strong> <strong>Guide</strong><br />
SAIL RANGE CHART<br />
34<br />
33<br />
32<br />
31<br />
<strong>30</strong><br />
29<br />
28<br />
27<br />
26<br />
25<br />
24<br />
23<br />
22<br />
21<br />
20<br />
19<br />
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17<br />
16<br />
15<br />
14<br />
13<br />
12<br />
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10<br />
9<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
Overlap<br />
Heavy Headsail<br />
60<br />
Overlap<br />
Medium<br />
Headsail<br />
Overlap<br />
70<br />
Light Headsail<br />
Frac.<br />
Asy.<br />
Asymmmetric<br />
or Symmetric<br />
Spinnaker<br />
80 90 100 110<br />
Both Sails<br />
TWA – True Wind Angle<br />
120 1<strong>30</strong> 140 150<br />
Fractional<br />
Spinnaker<br />
.75 Masthead<br />
Spinnaker<br />
Overlap<br />
<strong>30</strong>/20 20/20 Masthead<br />
Spinnaker<br />
No Mans Land<br />
170<br />
160 180<br />
How to use this Chart: Select True Wind Speed (TWS) on the vertical bar and True Wind Angle (TWA) on the horizontal bar.<br />
Where the two intersect will tell you what sail should be used. If this point falls within one of the overlap areas, there will be little<br />
or no speed difference between the two sails.
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