SILVER AGE: ORC Rating

GPH

550.4

OSN

536.6

LOA

11.99 m

Displacement

4936 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8522

Medium

1.1151

High

1.2638

Triple Offshore

Low

1.0959

Medium

1.3707

High

1.5327

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: 108.75 m²
Asymmetric spinnaker: 137.69 m²

Design

Type: COOKSON 12M
Builder: COOKSON BOATS
Designer: FARR
Year built: 1995

Performance data

Polar CSV

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

6,42.2,5.440031,52,6.1,60,6.44,75,6.7,90,6.62,110,6.65,120,6.45,135,5.78,143.1,5.264575,150,4.86
8,40.8,6.459752,52,7.22,60,7.46,75,7.62,90,7.61,110,7.76,120,7.67,135,7.16,142.5,6.64269,150,6.09
10,38.8,6.826307,52,7.61,60,7.82,75,8.04,90,8.08,110,8.33,120,8.3,135,7.91,150,7.17069
12,38,6.95422,52,7.74,60,7.97,75,8.35,90,8.53,110,8.72,120,8.95,135,8.54,150,7.88,157,7.539341
14,38.2,7.062355,52,7.81,60,8.06,75,8.54,90,8.94,110,9.09,120,9.44,135,9.28,150,8.44,172.3,7.598514
16,37.5,7.172088,52,7.89,60,8.11,75,8.66,90,9.24,110,9.45,120,9.88,135,10.13,150,9.1,180,8.06
20,38,7.233404,52,7.99,60,8.32,75,8.88,90,9.53,110,10.28,120,10.82,135,11.98,148.8,10.895943,150,10.76

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.1	6.44	6.7	6.62	6.65	6.45	5.78	4.86
8	7.22	7.46	7.62	7.61	7.76	7.67	7.16	6.09
10	7.61	7.82	8.04	8.08	8.33	8.3	7.91	7.17
12	7.74	7.97	8.35	8.53	8.72	8.95	8.54	7.88
14	7.81	8.06	8.54	8.94	9.09	9.44	9.28	8.44
16	7.89	8.11	8.66	9.24	9.45	9.88	10.13	9.1
20	7.99	8.32	8.88	9.53	10.28	10.82	11.98	10.76

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	4.03	143.1°	4.21
8	40.8°	4.89	142.5°	5.27
10	38.8°	5.32	150°	6.21
12	38°	5.48	157°	6.94
14	38.2°	5.55	172.3°	7.53
16	37.5°	5.69	180°	8.06
20	38°	5.7	148.8°	9.32

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	6.10	7.22	7.61	7.74	7.81	7.89	7.99
60°	6.44	7.46	7.82	7.97	8.06	8.11	8.32
75°	6.70	7.62	8.04	8.35	8.54	8.66	8.88
90°	6.62	7.61	8.08	8.53	8.94	9.24	9.53
110°	6.65	7.76	8.33	8.72	9.09	9.45	10.28
120°	6.45	7.67	8.30	8.95	9.44	9.88	10.82
135°	5.78	7.16	7.91	8.54	9.28	10.13	11.98
150°	4.86	6.09	7.17	7.88	8.44	9.10	10.76