JOT — ORC Rating | RegattaPages

GPH

659.3

OSN

641.2

LOA

8.032 m

Displacement

1443 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6291

Medium

0.8284

High

0.9493

Triple Offshore

Low

0.8075

Medium

1.0187

High

1.155

Boat Specifications

Dimensions

Length overall: 8.032 m
Beam: 2.49 m
Draft: 1.5 m
Displacement: 1443 kg
Crew weight: 339 kg
Wetted surface: 12.94 m²

Sails

Mainsail: 21.17 m²
Genoa: 13.96 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 65.77 m²

Design

Type: J-80
Builder: J. Boats
Designer: R. Johnstone
Year built: 1993
Stability index: 113.2

Velocity Prediction

Polar CSV

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

6,43,4.348101,52,4.89,60,5.18,75,5.4,90,5.55,110,5.68,120,5.55,135,4.98,144.8,4.491248,150,4.24
8,41.8,5.218143,52,5.81,60,6.02,75,6.17,90,6.33,110,6.49,120,6.44,135,6.11,147.8,5.471564,150,5.34
10,39.4,5.68113,52,6.24,60,6.39,75,6.53,90,6.59,110,7.04,120,7.05,135,6.74,150,6.16,150.1,6.148368
12,38.2,5.815308,52,6.41,60,6.61,75,6.88,90,6.95,110,7.43,120,7.69,135,7.39,149.6,6.712937,150,6.69
14,38.1,5.883586,52,6.48,60,6.73,75,7.15,90,7.37,110,7.77,120,8.19,135,8.16,146.6,7.462437,150,7.2
16,37.8,5.910233,52,6.52,60,6.79,75,7.31,90,7.74,110,8.1,120,8.63,135,9.1,144.1,8.39463,150,7.86
20,38.4,5.997243,52,6.63,60,6.95,75,7.4,90,8.18,110,8.73,120,9.53,135,11.19,141.8,11.376117,150,10.32

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.89	5.18	5.4	5.55	5.68	5.55	4.98	4.24
8	5.81	6.02	6.17	6.33	6.49	6.44	6.11	5.34
10	6.24	6.39	6.53	6.59	7.04	7.05	6.74	6.16
12	6.41	6.61	6.88	6.95	7.43	7.69	7.39	6.69
14	6.48	6.73	7.15	7.37	7.77	8.19	8.16	7.2
16	6.52	6.79	7.31	7.74	8.1	8.63	9.1	7.86
20	6.63	6.95	7.4	8.18	8.73	9.53	11.19	10.32

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.18	144.8°	3.67
8	41.8°	3.89	147.8°	4.63
10	39.4°	4.39	150.1°	5.33
12	38.2°	4.57	149.6°	5.79
14	38.1°	4.63	146.6°	6.23
16	37.8°	4.67	144.1°	6.8
20	38.4°	4.7	141.8°	8.94

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