NIMBUS — ORC Rating | RegattaPages

GPH

671

OSN

649.8

LOA

6.91 m

Displacement

812 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6049

Medium

0.8026

High

0.9423

Triple Offshore

Low

0.7791

Medium

1.0031

High

1.1816

Boat Specifications

Dimensions

Length overall: 6.91 m
Beam: 2.25 m
Draft: 1.38 m
Displacement: 812 kg
Crew weight: 340 kg
Wetted surface: 10.83 m²

Sails

Mainsail: 15.9 m²
Genoa: 9.96 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 45.25 m²

Design

Type: J-70 ONE DESIGN
Builder: J BOATS
Designer: JOHNSTONE
Year built: 2012

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.

6,42.8,4.143214,52,4.64,60,4.95,75,5.18,90,5.47,110,5.55,120,5.39,135,4.84,145,4.345958,150,4.11
8,42,4.992297,52,5.56,60,5.8,75,5.96,90,6.24,110,6.34,120,6.23,135,5.88,148,5.294511,150,5.18
10,41.1,5.520438,52,6.02,60,6.19,75,6.36,90,6.79,110,7.09,120,6.93,135,6.49,150,5.93,150.5,5.894142
12,38.1,5.743803,52,6.33,60,6.55,75,6.81,90,7.1,110,7.9,120,7.86,135,7.2,148.2,6.530236,150,6.41
14,37.1,5.792494,52,6.53,60,6.88,75,7.34,90,7.5,110,8.44,120,8.88,135,8.11,145,7.397894,150,7
16,37.5,5.835987,52,6.6,60,7,75,7.73,90,8.13,110,8.92,120,9.65,135,9.17,143.5,8.409457,150,7.8
20,38.6,5.860371,52,6.63,60,7.05,75,7.97,90,9.12,110,10.14,120,11.2,135,12.95,137.5,12.708922,150,10.82

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.64	4.95	5.18	5.47	5.55	5.39	4.84	4.11
8	5.56	5.8	5.96	6.24	6.34	6.23	5.88	5.18
10	6.02	6.19	6.36	6.79	7.09	6.93	6.49	5.93
12	6.33	6.55	6.81	7.1	7.9	7.86	7.2	6.41
14	6.53	6.88	7.34	7.5	8.44	8.88	8.11	7
16	6.6	7	7.73	8.13	8.92	9.65	9.17	7.8
20	6.63	7.05	7.97	9.12	10.14	11.2	12.95	10.82

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.04	145°	3.56
8	42°	3.71	148°	4.49
10	41.1°	4.16	150.5°	5.13
12	38.1°	4.52	148.2°	5.55
14	37.1°	4.62	145°	6.06
16	37.5°	4.63	143.5°	6.76
20	38.6°	4.58	137.5°	9.37

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