Jaffa: ORC Rating

GPH

650.9

OSN

631.3

LOA

9.12 m

Displacement

2600 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.629

Medium

0.8488

High

0.9643

Triple Offshore

Low

0.8089

Medium

1.0389

High

1.1622

Boat Specifications

Dimensions

Length overall: 9.12 m
Beam: 3.19 m
Draft: 1.72 m
Displacement: 2600 kg
Crew weight: 515 kg
Wetted surface: 19.26 m²

Sails

Mainsail: 26.95 m²
Genoa: 25.12 m²
Spinnaker: 56.77 m²
Asymmetric spinnaker: 0 m²

Design

Type: One off
Builder: Steve Etheridge
Designer: Robert Weguelin
Year built: 1989

Performance data

Polar CSV

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

6,43.5,4.701021,52,5.21,60,5.48,75,5.64,90,5.52,110,5.39,120,5.21,135,4.66,144.2,4.179696,150,3.92
8,41,5.485554,52,6.08,60,6.3,75,6.44,90,6.39,110,6.44,120,6.28,135,5.76,148.9,5.068512,150,5.01
10,38.9,5.923599,52,6.56,60,6.73,75,6.86,90,6.89,110,7.01,120,6.91,135,6.54,150,5.93,153,5.77998
12,37.9,6.108348,52,6.79,60,6.98,75,7.18,90,7.21,110,7.48,120,7.4,135,7.05,150,6.6,159.4,6.228236
14,37.7,6.19294,52,6.89,60,7.1,75,7.42,90,7.54,110,7.89,120,7.87,135,7.51,150,7.06,173.6,6.460261
16,38.4,6.290725,52,6.94,60,7.18,75,7.57,90,7.83,110,8.25,120,8.35,135,8,150,7.5,177.7,6.895555
20,39.2,6.323034,52,6.98,60,7.26,75,7.75,90,8.23,110,8.75,120,9.36,135,9.24,150,8.45,177.7,7.716216
24,41.5,6.31546,52,6.93,60,7.23,75,7.82,90,8.47,110,9.05,120,10.2,135,11.76,150,9.88,174.1,8.675958

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.21	5.48	5.64	5.52	5.39	5.21	4.66	3.92
8	6.08	6.3	6.44	6.39	6.44	6.28	5.76	5.01
10	6.56	6.73	6.86	6.89	7.01	6.91	6.54	5.93
12	6.79	6.98	7.18	7.21	7.48	7.4	7.05	6.6
14	6.89	7.1	7.42	7.54	7.89	7.87	7.51	7.06
16	6.94	7.18	7.57	7.83	8.25	8.35	8	7.5
20	6.98	7.26	7.75	8.23	8.75	9.36	9.24	8.45
24	6.93	7.23	7.82	8.47	9.05	10.2	11.76	9.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.41	144.2°	3.39
8	41°	4.14	148.9°	4.34
10	38.9°	4.61	153°	5.15
12	37.9°	4.82	159.4°	5.83
14	37.7°	4.9	173.6°	6.42
16	38.4°	4.93	177.7°	6.89
20	39.2°	4.9	177.7°	7.71
24	41.5°	4.73	174.1°	8.63

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 kt24 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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.21	6.08	6.56	6.79	6.89	6.94	6.98	6.93
60°	5.48	6.30	6.73	6.98	7.10	7.18	7.26	7.23
75°	5.64	6.44	6.86	7.18	7.42	7.57	7.75	7.82
90°	5.52	6.39	6.89	7.21	7.54	7.83	8.23	8.47
110°	5.39	6.44	7.01	7.48	7.89	8.25	8.75	9.05
120°	5.21	6.28	6.91	7.40	7.87	8.35	9.36	10.20
135°	4.66	5.76	6.54	7.05	7.51	8.00	9.24	11.76
150°	3.92	5.01	5.93	6.60	7.06	7.50	8.45	9.88