SAIL EXCHANGE — ORC Rating

GPH

557.2

OSN

542.6

LOA

11.99 m

Displacement

5269 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7328

Medium

0.9844

High

1.1229

Triple Offshore

Low

0.9479

Medium

1.2104

High

1.3648

Boat Specifications

Dimensions

Length overall: 11.99 m
Beam: 3.84 m
Draft: 2.58 m
Displacement: 5269 kg
Crew weight: 810 kg
Wetted surface: 29.34 m²

Sails

Mainsail: 50.88 m²
Genoa: 35.18 m²
Spinnaker: 129.11 m²
Asymmetric spinnaker: 130.33 m²

Design

Type: Cookson 12
Builder: Cookson
Designer: FARR
Year built: 1995

Velocity Prediction

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.

6,42.4,5.227127,52,5.86,60,6.19,75,6.5,90,6.71,110,6.48,120,6.29,135,5.62,143.5,5.112851,150,4.74
8,40.9,6.218136,52,6.99,60,7.26,75,7.52,90,7.68,110,7.64,120,7.54,135,6.98,146,6.224085,150,5.95
10,39,6.806958,52,7.56,60,7.74,75,7.94,90,8.17,110,8.23,120,8.15,135,7.79,150,7.043673
12,37.5,6.983017,52,7.77,60,7.98,75,8.25,90,8.6,110,8.7,120,8.78,135,8.35,150,7.76,156.5,7.447713
14,37.5,7.109064,52,7.86,60,8.1,75,8.54,90,8.91,110,9.22,120,9.4,135,9.02,150,8.27,172,7.492921
16,37.1,7.159121,52,7.91,60,8.18,75,8.71,90,9.14,110,9.82,120,9.84,135,9.79,150,8.87,180,7.95
20,37.1,7.297038,52,8.06,60,8.37,75,8.87,90,9.62,110,10.76,120,11.12,135,11.68,150,10.33,180,9.02

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.86	6.19	6.5	6.71	6.48	6.29	5.62	4.74
8	6.99	7.26	7.52	7.68	7.64	7.54	6.98	5.95
10	7.56	7.74	7.94	8.17	8.23	8.15	7.79	7.04
12	7.77	7.98	8.25	8.6	8.7	8.78	8.35	7.76
14	7.86	8.1	8.54	8.91	9.22	9.4	9.02	8.27
16	7.91	8.18	8.71	9.14	9.82	9.84	9.79	8.87
20	8.06	8.37	8.87	9.62	10.76	11.12	11.68	10.33

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.86	143.5°	4.11
8	40.9°	4.7	146°	5.16
10	39°	5.29	150°	6.1
12	37.5°	5.54	156.5°	6.83
14	37.5°	5.64	172°	7.42
16	37.1°	5.71	180°	7.95
20	37.1°	5.82	180°	9.02

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