USYRA MHS AMENDED MARCH 1983

VPP - RUN: 4/15/83 2:58:30

CERT# 24620 SAIL# 20879

SPEED, HEEL ANGLE, REEF, SAIL

FLATENING AND LIFT COEFFICIENTS

YACHT: ALCHURINGA

BY SAILING ANGLE & WIND STRENGTH.

CLASS: PSN10M

VTW = TRUE WIND VELOCITY

BTW = TRUE WIND ANGE

RIG: SLOOP

VAW = APPARENT WIND VELOCITY

PROP: FOLDING

BAW = APPARENT WIND ANGLE

INST: OUT OF APERTURE

V = BOAT SPEED

VMG = VELOCITY MADE GOOD

OWNER:

HEEL = HEEL ANGLE IN DEGREES

GUNNER FROEBEL

REEF = % OF SAIL AREA REMAINING

25 SIDE HILL RD

FLAT = % OF FULL DRAFT REMAINING

WESTPORT CT 06880

CL = COEFFICIENT OF LIFT

VTW

BTW

VAW

BAW

V

VMG

HEEL

REEF

FLAT

CL

8

46.7

11.79

27.8

5.171

3.548

9.7

1

1

2.078

8

52

11.93

29.9

5.631

3.467

10.1

1

1

2.081

8

80

10.64

43.7

6.368

1.106

12.9

1

1

2.481

8

110

8.11

62.3

6.401

-2.189

5.2

1

1

2.636

8

145

4.61

107.2

4.929

-4.04

1.3

1

1

1.926

10

45

14.09

27.4

5.752

4.069

15.7

1

0.937

1.947

10

52

14.08

30.6

6.247

3.846

17.3

1

1

2.083

10

80

12.56

47.6

6.797

1.18

10.3

1

1

2.023

10

110

9.60

67.7

6.918

-2.366

9.3

1

1

2.662

10

149.5

5.52

118

5.68

-4.893

1.4

1

1

1.601

12

42.5

16.12

27

5.946

4.381

18.6

1

0.801

1.663

12

52

15.91

31.6

6.628

4.019

21.6

1

0.901

1.877

12

80

14.21

50.1

7.12

1.236

14.6

1

1

1.986

12

110

10.98

72.1

7.297

-2.496

14.1

1

1

2.633

12

161.5

6.15

143.6

5.98

-5.672

1

1

1

0.894

14

41.1

18.03

26.9

6.067

4.571

21.3

1

0.691

1.435

14

52

17.64

32.6

6.693

4.123

24.4

1

0.791

1.649

14

80

15.69

51.9

7.358

1.278

19.7

1

1

1.952

14

110

12.20

75.6

7.588

-2.595

19.2

1

1

2.601

14

165.6

7.37

153.1

6.445

-6.244

0.9

1

1

0.646

16

40.4

19.86

27

6.148

4.685

23.4

1

0.602

1.251

16

52

19.30

33.5

6.807

4.191

26.6

1

0.697

1.455

16

80

16.93

53.1

7.528

1.307

24.7

1

1

1.927

16

110

13.24

78.5

7.813

-2.672

24.2

1

1

2.567

16

167.7

8.80

158.1

6.835

-6.677

0.9

1

1

0.513

20

40.1

23.32

27.1

6.241

4.774

29.9

0.99

0.484

0.986

20

52

22.48

34.9

6.924

4.263

29.3

0.949

0.624

1.174

20

80

19.24

55.3

7.722

1.341

30.7

0.961

1

1.735

20

110

15.06

83.4

8.125

-2.779

31.6

0.981

1

2.4

20

169.2

11.91

162.5

7.505

-7.373

1.2

1

1

0.397