UNIQUE: ORC Rating

GPH

741.4

OSN

718.6

LOA

6.855 m

Displacement

892 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5546

Medium

0.7481

High

0.8463

Triple Offshore

Low

0.7125

Medium

0.9098

High

1.0234

Boat Specifications

Dimensions

Length overall: 6.855 m
Beam: 2.44 m
Draft: 1.19 m
Displacement: 892 kg
Crew weight: 295 kg
Wetted surface: 9.81 m²

Sails

Mainsail: 16.49 m²
Genoa: 6.96 m²
Spinnaker: 25.59 m²
Asymmetric spinnaker: 0 m²

Design

Type: HUNTER FORMULA ONE
Builder: HUNTER UK
Designer: STEPHEN JONES
Year built: 1980
Stability index: 99.3

Performance data

Polar CSV

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

6,43,3.96525,52,4.41,60,4.64,75,4.78,90,4.95,110,4.93,120,4.77,135,4.29,146.2,3.754583,150,3.61
8,41.1,4.65787,52,5.19,60,5.37,75,5.48,90,5.71,110,5.72,120,5.6,135,5.19,150,4.58,151.6,4.513166
10,39.3,5.078568,52,5.61,60,5.76,75,5.88,90,6.12,110,6.19,120,6.08,135,5.78,150,5.34,157.4,5.0801
12,37.8,5.277445,52,5.83,60,5.99,75,6.16,90,6.39,110,6.62,120,6.52,135,6.19,150,5.85,171.8,5.354746
14,37.6,5.3642,52,5.94,60,6.13,75,6.39,90,6.56,110,7.04,120,6.97,135,6.62,150,6.24,179,5.78088
16,37.8,5.404003,52,6,60,6.22,75,6.56,90,6.77,110,7.47,120,7.53,135,7.08,150,6.63,179,6.150937
20,39.3,5.466245,52,6.04,60,6.3,75,6.75,90,7.25,110,8.28,120,9.36,135,8.81,150,7.61,179,6.901051

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.41	4.64	4.78	4.95	4.93	4.77	4.29	3.61
8	5.19	5.37	5.48	5.71	5.72	5.6	5.19	4.58
10	5.61	5.76	5.88	6.12	6.19	6.08	5.78	5.34
12	5.83	5.99	6.16	6.39	6.62	6.52	6.19	5.85
14	5.94	6.13	6.39	6.56	7.04	6.97	6.62	6.24
16	6	6.22	6.56	6.77	7.47	7.53	7.08	6.63
20	6.04	6.3	6.75	7.25	8.28	9.36	8.81	7.61

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	2.9	146.2°	3.12
8	41.1°	3.51	151.6°	3.97
10	39.3°	3.93	157.4°	4.69
12	37.8°	4.17	171.8°	5.3
14	37.6°	4.25	179°	5.78
16	37.8°	4.27	179°	6.15
20	39.3°	4.23	179°	6.9

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°	4.41	5.19	5.61	5.83	5.94	6.00	6.04
60°	4.64	5.37	5.76	5.99	6.13	6.22	6.30
75°	4.78	5.48	5.88	6.16	6.39	6.56	6.75
90°	4.95	5.71	6.12	6.39	6.56	6.77	7.25
110°	4.93	5.72	6.19	6.62	7.04	7.47	8.28
120°	4.77	5.60	6.08	6.52	6.97	7.53	9.36
135°	4.29	5.19	5.78	6.19	6.62	7.08	8.81
150°	3.61	4.58	5.34	5.85	6.24	6.63	7.61