NJORD: ORC Rating

GPH

648.2

OSN

630.2

LOA

9.503 m

Displacement

3459 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6264

Medium

0.8515

High

0.9721

Triple Offshore

Low

0.8106

Medium

1.0442

High

1.168

Boat Specifications

Dimensions

Length overall: 9.503 m
Beam: 3.14 m
Draft: 1.93 m
Displacement: 3459 kg
Crew weight: 550 kg
Wetted surface: 21.05 m²

Sails

Mainsail: 32.6 m²
Genoa: 22.86 m²
Spinnaker: 67.7 m²
Asymmetric spinnaker: 51.76 m²

Design

Type: SJ 320
Builder: Seaquest Ltd
Designer: S.Jones
Year built: 1994

Performance data

Polar CSV

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

6,42.8,4.497568,52,5.06,60,5.36,75,5.6,90,5.54,110,5.56,120,5.38,135,4.83,145,4.284919,150,4.05
8,41.2,5.302925,52,5.99,60,6.26,75,6.46,90,6.53,110,6.61,120,6.48,135,5.97,149,5.168186,150,5.12
10,40.5,5.944193,52,6.54,60,6.72,75,6.86,90,7,110,7.11,120,7.03,135,6.73,150,6.08,151,6.025476
12,39,6.150711,52,6.78,60,6.95,75,7.13,90,7.32,110,7.53,120,7.46,135,7.17,150,6.76,160,6.363783
14,38.8,6.248894,52,6.87,60,7.08,75,7.36,90,7.52,110,7.93,120,7.94,135,7.6,150,7.16,180,6.59
16,39,6.292254,52,6.91,60,7.13,75,7.53,90,7.79,110,8.29,120,8.42,135,8.08,150,7.56,180,7.02
20,39,6.382327,52,6.99,60,7.2,75,7.65,90,8.22,110,8.81,120,9.31,135,9.24,150,8.47,180,7.8

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.06	5.36	5.6	5.54	5.56	5.38	4.83	4.05
8	5.99	6.26	6.46	6.53	6.61	6.48	5.97	5.12
10	6.54	6.72	6.86	7	7.11	7.03	6.73	6.08
12	6.78	6.95	7.13	7.32	7.53	7.46	7.17	6.76
14	6.87	7.08	7.36	7.52	7.93	7.94	7.6	7.16
16	6.91	7.13	7.53	7.79	8.29	8.42	8.08	7.56
20	6.99	7.2	7.65	8.22	8.81	9.31	9.24	8.47

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.3	145°	3.51
8	41.2°	3.99	149°	4.43
10	40.5°	4.52	151°	5.27
12	39°	4.78	160°	5.98
14	38.8°	4.87	180°	6.59
16	39°	4.89	180°	7.02
20	39°	4.96	180°	7.8

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°	5.06	5.99	6.54	6.78	6.87	6.91	6.99
60°	5.36	6.26	6.72	6.95	7.08	7.13	7.20
75°	5.60	6.46	6.86	7.13	7.36	7.53	7.65
90°	5.54	6.53	7.00	7.32	7.52	7.79	8.22
110°	5.56	6.61	7.11	7.53	7.93	8.29	8.81
120°	5.38	6.48	7.03	7.46	7.94	8.42	9.31
135°	4.83	5.97	6.73	7.17	7.60	8.08	9.24
150°	4.05	5.12	6.08	6.76	7.16	7.56	8.47