JAM — ORC Rating | RegattaPages

GPH

616.4

OSN

598.5

LOA

8.96 m

Displacement

2316 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6687

Medium

0.8891

High

1.0215

Triple Offshore

Low

0.8592

Medium

1.0925

High

1.2394

Boat Specifications

Dimensions

Length overall: 8.96 m
Beam: 2.85 m
Draft: 1.96 m
Displacement: 2316 kg
Crew weight: 320 kg
Wetted surface: 17.11 m²

Sails

Mainsail: 25.66 m²
Genoa: 21.76 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 94.94 m²

Design

Type: J-88
Builder: J-BOAT
Designer: R-JOHNSTONE
Year built: 2013
Stability index: 134.1

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.

6,42.9,4.668669,52,5.2,60,5.5,75,5.73,90,5.86,110,6.01,120,5.88,135,5.23,144.2,4.734523,150,4.43
8,41.8,5.633984,52,6.25,60,6.47,75,6.61,90,6.74,110,6.95,120,6.9,135,6.54,146,5.862219,150,5.62
10,39.4,6.108185,52,6.73,60,6.89,75,7.03,90,7.03,110,7.48,120,7.55,135,7.23,149.6,6.608591,150,6.58
12,38.4,6.265205,52,6.9,60,7.12,75,7.4,90,7.45,110,7.85,120,8.17,135,7.95,150,7.19,150.1,7.175018
14,38.1,6.32835,52,6.98,60,7.24,75,7.7,90,7.92,110,8.21,120,8.64,135,8.8,146.8,8.030935,150,7.76
16,37.8,6.36584,52,7.03,60,7.32,75,7.88,90,8.33,110,8.55,120,9.1,135,9.81,144.4,9.064067,150,8.51
20,37.9,6.450517,52,7.16,60,7.47,75,8.04,90,8.84,110,9.21,120,10.01,135,11.49,143,11.807639,150,10.89

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.2	5.5	5.73	5.86	6.01	5.88	5.23	4.43
8	6.25	6.47	6.61	6.74	6.95	6.9	6.54	5.62
10	6.73	6.89	7.03	7.03	7.48	7.55	7.23	6.58
12	6.9	7.12	7.4	7.45	7.85	8.17	7.95	7.19
14	6.98	7.24	7.7	7.92	8.21	8.64	8.8	7.76
16	7.03	7.32	7.88	8.33	8.55	9.1	9.81	8.51
20	7.16	7.47	8.04	8.84	9.21	10.01	11.49	10.89

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.42	144.2°	3.84
8	41.8°	4.2	146°	4.86
10	39.4°	4.72	149.6°	5.7
12	38.4°	4.91	150.1°	6.22
14	38.1°	4.98	146.8°	6.72
16	37.8°	5.03	144.4°	7.37
20	37.9°	5.09	143°	9.43

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