JOT — ORC Rating | RegattaPages

GPH

665.2

OSN

648.8

LOA

7.997 m

Displacement

1446 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7058

Medium

0.9231

High

1.0438

Triple Offshore

Low

0.907

Medium

1.1338

High

1.2694

Boat Specifications

Dimensions

Length overall: 7.997 m
Beam: 2.49 m
Draft: 1.49 m
Displacement: 1446 kg
Crew weight: 339 kg
Wetted surface: 13.63 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

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.

6,42.5,4.353857,52,4.91,60,5.2,75,5.42,90,5.56,110,5.69,120,5.54,135,4.95,144.7,4.460032,150,4.2
8,41.2,5.18331,52,5.79,60,6,75,6.15,90,6.3,110,6.47,120,6.41,135,6.06,147.9,5.382932,150,5.26
10,38.9,5.628061,52,6.21,60,6.36,75,6.51,90,6.55,110,6.96,120,6.97,135,6.66,149.7,6.103807,150,6.09
12,38.1,5.756511,52,6.35,60,6.55,75,6.81,90,6.89,110,7.31,120,7.55,135,7.25,150,6.57,150.7,6.536178
14,37.9,5.816871,52,6.42,60,6.64,75,7.04,90,7.27,110,7.57,120,8.01,135,7.94,150,6.98,176.3,6.162846
16,37.7,5.864335,52,6.44,60,6.69,75,7.17,90,7.6,110,7.87,120,8.36,135,8.77,144.2,8.100472,150,7.58
20,38.5,5.928893,52,6.54,60,6.83,75,7.27,90,7.94,110,8.48,120,9.12,135,10.64,140.8,10.658828,150,9.54

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.91	5.2	5.42	5.56	5.69	5.54	4.95	4.2
8	5.79	6	6.15	6.3	6.47	6.41	6.06	5.26
10	6.21	6.36	6.51	6.55	6.96	6.97	6.66	6.09
12	6.35	6.55	6.81	6.89	7.31	7.55	7.25	6.57
14	6.42	6.64	7.04	7.27	7.57	8.01	7.94	6.98
16	6.44	6.69	7.17	7.6	7.87	8.36	8.77	7.58
20	6.54	6.83	7.27	7.94	8.48	9.12	10.64	9.54

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.21	144.7°	3.64
8	41.2°	3.9	147.9°	4.56
10	38.9°	4.38	149.7°	5.27
12	38.1°	4.53	150.7°	5.7
14	37.9°	4.59	176.3°	6.15
16	37.7°	4.64	144.2°	6.57
20	38.5°	4.64	140.8°	8.26

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