NORTHSTAR: ORC Rating

GPH

614

OSN

598

LOA

10.757 m

Displacement

4940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6566

Medium

0.8901

High

1.0113

Triple Offshore

Low

0.8572

Medium

1.1013

High

1.2285

Boat Specifications

Dimensions

Length overall: 10.757 m
Beam: 3.52 m
Draft: 2.12 m
Displacement: 4940 kg
Crew weight: 768 kg
Wetted surface: 26.24 m²

Sails

Mainsail: 38.12 m²
Genoa: 29.08 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 120.31 m²

Design

Type: J 109 (DK)
Builder: Pearson Composites
Designer: R. Alan Johnsone
Year built: 2001
Stability index: 117

Performance data

Polar CSV

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

6,43,4.566874,52,5.12,60,5.48,75,6.04,90,6.3,110,6.09,120,5.79,135,5.19,144.8,4.687051,150,4.42
8,41.4,5.412532,52,6.12,60,6.53,75,6.97,90,7.15,110,7.06,120,6.95,135,6.47,147.8,5.672464,150,5.55
10,41.1,6.157412,52,6.79,60,6.99,75,7.32,90,7.56,110,7.55,120,7.5,135,7.24,148.2,6.67143,150,6.55
12,38.8,6.467027,52,7.12,60,7.29,75,7.5,90,7.85,110,7.96,120,7.98,135,7.7,150,7.19,150.5,7.157993
14,38.2,6.616981,52,7.27,60,7.46,75,7.68,90,8.05,110,8.41,120,8.47,135,8.2,150,7.51,152.3,7.363956
16,37.8,6.669577,52,7.34,60,7.55,75,7.89,90,8.23,110,8.79,120,8.88,135,8.74,150,7.82,174.8,7.049011
20,37.6,6.765203,52,7.4,60,7.62,75,8.1,90,8.56,110,9.34,120,9.65,135,10.11,150,8.57,175.7,7.731764

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.12	5.48	6.04	6.3	6.09	5.79	5.19	4.42
8	6.12	6.53	6.97	7.15	7.06	6.95	6.47	5.55
10	6.79	6.99	7.32	7.56	7.55	7.5	7.24	6.55
12	7.12	7.29	7.5	7.85	7.96	7.98	7.7	7.19
14	7.27	7.46	7.68	8.05	8.41	8.47	8.2	7.51
16	7.34	7.55	7.89	8.23	8.79	8.88	8.74	7.82
20	7.4	7.62	8.1	8.56	9.34	9.65	10.11	8.57

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.34	144.8°	3.83
8	41.4°	4.06	147.8°	4.8
10	41.1°	4.64	148.2°	5.67
12	38.8°	5.04	150.5°	6.23
14	38.2°	5.2	152.3°	6.52
16	37.8°	5.27	174.8°	7.02
20	37.6°	5.36	175.7°	7.71

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°	5.12	6.12	6.79	7.12	7.27	7.34	7.40
60°	5.48	6.53	6.99	7.29	7.46	7.55	7.62
75°	6.04	6.97	7.32	7.50	7.68	7.89	8.10
90°	6.30	7.15	7.56	7.85	8.05	8.23	8.56
110°	6.09	7.06	7.55	7.96	8.41	8.79	9.34
120°	5.79	6.95	7.50	7.98	8.47	8.88	9.65
135°	5.19	6.47	7.24	7.70	8.20	8.74	10.11
150°	4.42	5.55	6.55	7.19	7.51	7.82	8.57