SILVER AGE — ORC Rating

GPH

551.8

OSN

539

LOA

11.99 m

Displacement

4936 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7562

Medium

0.9823

High

1.1055

Triple Offshore

Low

0.9746

Medium

1.2143

High

1.3522

Boat Specifications

Dimensions

Length overall: 11.99 m
Beam: 3.84 m
Draft: 2.57 m
Displacement: 4936 kg
Crew weight: 768 kg
Wetted surface: 28.63 m²

Sails

Mainsail: 54.87 m²
Genoa: 37.62 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 137.69 m²

Design

Type: Cookson 12m
Builder: Cookson Boats
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.

6,42,5.4229,52,6.12,60,6.47,75,6.77,90,6.72,110,6.65,120,6.46,135,5.77,142.5,5.281379,150,4.84
8,40.5,6.417625,52,7.22,60,7.46,75,7.62,90,7.62,110,7.75,120,7.66,135,7.17,144.5,6.461,150,6.07
10,39,6.819826,52,7.6,60,7.82,75,8.04,90,8.09,110,8.33,120,8.3,135,7.92,149.5,7.195671,150,7.16
12,38.2,6.960555,52,7.73,60,7.97,75,8.35,90,8.54,110,8.72,120,8.96,135,8.54,150,7.85,152,7.712802
14,38.2,7.04963,52,7.8,60,8.05,75,8.54,90,8.95,110,9.09,120,9.45,135,9.26,149.5,8.356263,150,8.32
16,37.5,7.146879,52,7.89,60,8.12,75,8.65,90,9.24,110,9.45,120,9.89,135,10.13,150,8.85,177,7.710567
20,38.2,7.227779,52,7.98,60,8.31,75,8.88,90,9.52,110,10.3,120,10.82,135,12,142.8,11.524991,150,10.6

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.12	6.47	6.77	6.72	6.65	6.46	5.77	4.84
8	7.22	7.46	7.62	7.62	7.75	7.66	7.17	6.07
10	7.6	7.82	8.04	8.09	8.33	8.3	7.92	7.16
12	7.73	7.97	8.35	8.54	8.72	8.96	8.54	7.85
14	7.8	8.05	8.54	8.95	9.09	9.45	9.26	8.32
16	7.89	8.12	8.65	9.24	9.45	9.89	10.13	8.85
20	7.98	8.31	8.88	9.52	10.3	10.82	12	10.6

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	4.03	142.5°	4.19
8	40.5°	4.88	144.5°	5.26
10	39°	5.3	149.5°	6.2
12	38.2°	5.47	152°	6.81
14	38.2°	5.54	149.5°	7.2
16	37.5°	5.67	177°	7.7
20	38.2°	5.68	142.8°	9.18

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