J NO — ORC Rating | RegattaPages

GPH

659.9

OSN

641.2

LOA

8.032 m

Displacement

1437 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6365

Medium

0.832

High

0.9469

Triple Offshore

Low

0.8106

Medium

1.0167

High

1.1454

Boat Specifications

Dimensions

Length overall: 8.032 m
Beam: 2.49 m
Draft: 1.5 m
Displacement: 1437 kg
Crew weight: 415 kg
Wetted surface: 13.45 m²

Sails

Mainsail: 21.53 m²
Genoa: 13.98 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 64.99 m²

Design

Type: J-80 OD
Builder: J-Ccomposite
Designer: JOHNSTONE
Year built: 1995
Stability index: 104.9

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.

6,42.6,4.455934,52,4.97,60,5.21,75,5.35,90,5.48,110,5.59,120,5.46,135,4.94,144.8,4.466772,150,4.22
8,40.6,5.241868,52,5.83,60,6.01,75,6.11,90,6.28,110,6.45,120,6.38,135,6.01,148.7,5.360118,150,5.29
10,38.2,5.675334,52,6.26,60,6.39,75,6.51,90,6.57,110,6.95,120,6.97,135,6.68,149.6,6.110048,150,6.09
12,37,5.822431,52,6.44,60,6.62,75,6.82,90,6.88,110,7.3,120,7.49,135,7.26,149.6,6.654967,150,6.63
14,36.9,5.902327,52,6.53,60,6.73,75,7.04,90,7.22,110,7.6,120,7.99,135,7.91,147.5,7.24456,150,7.06
16,36.9,5.952346,52,6.58,60,6.81,75,7.18,90,7.5,110,7.91,120,8.44,135,8.71,144.3,8.077987,150,7.57
20,37.6,5.982661,52,6.63,60,6.88,75,7.35,90,7.9,110,8.52,120,9.48,135,11.38,140.9,11.236441,150,10.07

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.97	5.21	5.35	5.48	5.59	5.46	4.94	4.22
8	5.83	6.01	6.11	6.28	6.45	6.38	6.01	5.29
10	6.26	6.39	6.51	6.57	6.95	6.97	6.68	6.09
12	6.44	6.62	6.82	6.88	7.3	7.49	7.26	6.63
14	6.53	6.73	7.04	7.22	7.6	7.99	7.91	7.06
16	6.58	6.81	7.18	7.5	7.91	8.44	8.71	7.57
20	6.63	6.88	7.35	7.9	8.52	9.48	11.38	10.07

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.28	144.8°	3.65
8	40.6°	3.98	148.7°	4.58
10	38.2°	4.46	149.6°	5.27
12	37°	4.65	149.6°	5.74
14	36.9°	4.72	147.5°	6.11
16	36.9°	4.76	144.3°	6.56
20	37.6°	4.74	140.9°	8.72

Loading polar chart…