JETTE — ORC Rating | RegattaPages

GPH

618.3

OSN

599

LOA

9.95 m

Displacement

3877 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6633

Medium

0.8976

High

1.0243

Triple Offshore

Low

0.852

Medium

1.0938

High

1.2218

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 2.1 m
Displacement: 3877 kg
Crew weight: 480 kg
Wetted surface: 22.66 m²

Sails

Mainsail: 30.96 m²
Genoa: 26.3 m²
Spinnaker: 92.09 m²
Asymmetric spinnaker: 107.86 m²

Design

Type: J 99 DK
Builder: J. COMPOSITE
Designer: JOHSTONE
Year built: 2018

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.

6,43,4.703606,52,5.22,60,5.49,75,5.65,90,5.81,110,5.89,120,5.76,135,5.13,143.9,4.653524,150,4.34
8,40.8,5.548253,52,6.17,60,6.4,75,6.56,90,6.77,110,6.92,120,6.84,135,6.4,147,5.651802,150,5.48
10,39,6.09924,52,6.74,60,6.9,75,7.05,90,7.26,110,7.43,120,7.42,135,7.16,149.3,6.512747,150,6.46
12,37.6,6.348688,52,7.02,60,7.18,75,7.33,90,7.58,110,7.8,120,7.87,135,7.67,150,7.16,156.7,6.870298
14,37.3,6.474132,52,7.16,60,7.35,75,7.56,90,7.8,110,8.08,120,8.29,135,8.15,150,7.61,169.8,6.970159
16,37.1,6.544766,52,7.23,60,7.43,75,7.74,90,7.95,110,8.39,120,8.7,135,8.68,150,8.06,176.2,7.336129
20,37.5,6.630085,52,7.31,60,7.53,75,7.93,90,8.3,110,9.1,120,9.38,135,10.24,150,9.12,176.2,8.167958
24,38.5,6.644449,52,7.31,60,7.54,75,8.02,90,8.57,110,9.77,120,10.86,135,12.63,143.5,12.626626,150,11.71

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.22	5.49	5.65	5.81	5.89	5.76	5.13	4.34
8	6.17	6.4	6.56	6.77	6.92	6.84	6.4	5.48
10	6.74	6.9	7.05	7.26	7.43	7.42	7.16	6.46
12	7.02	7.18	7.33	7.58	7.8	7.87	7.67	7.16
14	7.16	7.35	7.56	7.8	8.08	8.29	8.15	7.61
16	7.23	7.43	7.74	7.95	8.39	8.7	8.68	8.06
20	7.31	7.53	7.93	8.3	9.1	9.38	10.24	9.12
24	7.31	7.54	8.02	8.57	9.77	10.86	12.63	11.71

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.44	143.9°	3.76
8	40.8°	4.2	147°	4.74
10	39°	4.74	149.3°	5.6
12	37.6°	5.03	156.7°	6.31
14	37.3°	5.15	169.8°	6.86
16	37.1°	5.22	176.2°	7.32
20	37.5°	5.26	176.2°	8.15
24	38.5°	5.2	143.5°	10.15

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