LUCKY EIGHTS: ORC Rating

GPH

576.1

OSN

558.8

LOA

12.405 m

Displacement

5698 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7784

Medium

1.0708

High

1.2242

Triple Offshore

Low

1.0117

Medium

1.3299

High

1.4974

Boat Specifications

Dimensions

Length overall: 12.405 m
Beam: 3.48 m
Draft: 2.1 m
Displacement: 5698 kg
Crew weight: 831 kg
Wetted surface: 31.01 m²

Sails

Mainsail: 45.49 m²
Genoa: 35.48 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 121.14 m²

Design

Type: J-124
Builder: TPI
Designer: JOHNSTONE
Year built: 2005

Performance data

Polar CSV

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

6,43.2,4.924766,52,5.5,60,5.83,75,6.1,90,6.13,110,6.19,120,6.02,135,5.36,142.7,4.90274,150,4.5
8,41.9,5.951809,52,6.7,60,7.05,75,7.28,90,7.44,110,7.54,120,7.39,135,6.72,145.8,5.960725,150,5.69
10,40.9,6.74734,52,7.47,60,7.69,75,7.86,90,7.93,110,8.17,120,8.08,135,7.69,147.5,6.971852,150,6.79
12,39.2,7.019858,52,7.75,60,7.96,75,8.19,90,8.23,110,8.65,120,8.64,135,8.22,150,7.61,150.3,7.586646
14,38.4,7.132891,52,7.87,60,8.1,75,8.46,90,8.61,110,9,120,9.26,135,8.8,150,8.04,151.6,7.934987
16,38.1,7.192462,52,7.93,60,8.18,75,8.65,90,8.99,110,9.33,120,9.78,135,9.5,150,8.43,175.2,7.496291
20,37.5,7.335949,52,8.07,60,8.3,75,8.83,90,9.52,110,9.98,120,10.61,135,11.26,143.1,10.454121,150,9.66

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.5	5.83	6.1	6.13	6.19	6.02	5.36	4.5
8	6.7	7.05	7.28	7.44	7.54	7.39	6.72	5.69
10	7.47	7.69	7.86	7.93	8.17	8.08	7.69	6.79
12	7.75	7.96	8.19	8.23	8.65	8.64	8.22	7.61
14	7.87	8.1	8.46	8.61	9	9.26	8.8	8.04
16	7.93	8.18	8.65	8.99	9.33	9.78	9.5	8.43
20	8.07	8.3	8.83	9.52	9.98	10.61	11.26	9.66

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.59	142.7°	3.9
8	41.9°	4.43	145.8°	4.93
10	40.9°	5.1	147.5°	5.88
12	39.2°	5.44	150.3°	6.59
14	38.4°	5.59	151.6°	6.98
16	38.1°	5.66	175.2°	7.47
20	37.5°	5.82	143.1°	8.36

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°	5.50	6.70	7.47	7.75	7.87	7.93	8.07
60°	5.83	7.05	7.69	7.96	8.10	8.18	8.30
75°	6.10	7.28	7.86	8.19	8.46	8.65	8.83
90°	6.13	7.44	7.93	8.23	8.61	8.99	9.52
110°	6.19	7.54	8.17	8.65	9.00	9.33	9.98
120°	6.02	7.39	8.08	8.64	9.26	9.78	10.61
135°	5.36	6.72	7.69	8.22	8.80	9.50	11.26
150°	4.50	5.69	6.79	7.61	8.04	8.43	9.66