GOOD LOOKIN': ORC Rating

GPH

616.2

OSN

596.4

LOA

10.57 m

Displacement

3893 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.661

Medium

0.8934

High

1.0126

Triple Offshore

Low

0.8496

Medium

1.1002

High

1.234

Boat Specifications

Dimensions

Length overall: 10.57 m
Beam: 3.35 m
Draft: 2 m
Displacement: 3893 kg
Crew weight: 476 kg
Wetted surface: 24.33 m²

Sails

Mainsail: 34.76 m²
Genoa: 25.58 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 86.62 m²

Design

Type: J 105
Builder: TILLOTSON-PEARSON
Designer: JOHNSTONE
Year built: 1991
Stability index: 113.5

Performance data

Polar CSV

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

6,43.3,4.740491,52,5.26,60,5.54,75,5.72,90,5.73,110,5.78,120,5.62,135,5.05,143.4,4.608769,150,4.27
8,40.8,5.601093,52,6.26,60,6.5,75,6.66,90,6.8,110,6.92,120,6.79,135,6.28,147.3,5.585193,150,5.43
10,39,6.176446,52,6.86,60,7.04,75,7.17,90,7.33,110,7.53,120,7.45,135,7.12,148.7,6.483636,150,6.4
12,37.6,6.43704,52,7.14,60,7.32,75,7.51,90,7.6,110,8.01,120,8.01,135,7.68,150,7.07,150.1,7.059664
14,37,6.548669,52,7.28,60,7.49,75,7.77,90,7.87,110,8.42,120,8.53,135,8.24,149.3,7.547808,150,7.49
16,36.6,6.614206,52,7.37,60,7.59,75,7.97,90,8.18,110,8.72,120,9.06,135,8.84,150,7.89,173.9,6.989575
20,37,6.711447,52,7.45,60,7.72,75,8.18,90,8.64,110,9.3,120,10.01,135,10.42,150,8.75,174.8,7.80211

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.26	5.54	5.72	5.73	5.78	5.62	5.05	4.27
8	6.26	6.5	6.66	6.8	6.92	6.79	6.28	5.43
10	6.86	7.04	7.17	7.33	7.53	7.45	7.12	6.4
12	7.14	7.32	7.51	7.6	8.01	8.01	7.68	7.07
14	7.28	7.49	7.77	7.87	8.42	8.53	8.24	7.49
16	7.37	7.59	7.97	8.18	8.72	9.06	8.84	7.89
20	7.45	7.72	8.18	8.64	9.3	10.01	10.42	8.75

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.3°	3.45	143.4°	3.7
8	40.8°	4.24	147.3°	4.7
10	39°	4.8	148.7°	5.54
12	37.6°	5.1	150.1°	6.12
14	37°	5.23	149.3°	6.49
16	36.6°	5.31	173.9°	6.95
20	37°	5.36	174.8°	7.77

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°	5.26	6.26	6.86	7.14	7.28	7.37	7.45
60°	5.54	6.50	7.04	7.32	7.49	7.59	7.72
75°	5.72	6.66	7.17	7.51	7.77	7.97	8.18
90°	5.73	6.80	7.33	7.60	7.87	8.18	8.64
110°	5.78	6.92	7.53	8.01	8.42	8.72	9.30
120°	5.62	6.79	7.45	8.01	8.53	9.06	10.01
135°	5.05	6.28	7.12	7.68	8.24	8.84	10.42
150°	4.27	5.43	6.40	7.07	7.49	7.89	8.75