JFS — ORC Rating | RegattaPages

GPH

596.1

OSN

580.9

LOA

8.073 m

Displacement

800 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7032

Medium

0.8993

High

1.0465

Triple Offshore

Low

0.8965

Medium

1.1207

High

1.2916

Boat Specifications

Dimensions

Length overall: 8.073 m
Beam: 2.69 m
Draft: 1.55 m
Displacement: 800 kg
Crew weight: 420 kg
Wetted surface: 12.16 m²

Sails

Mainsail: 22.53 m²
Genoa: 16.13 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 54.2 m²

Design

Type: Joker mod.
Builder: Maxi Dolphin
Designer: Santarelli
Year built: 1991
Stability index: 94.2

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.

6,42.6,5.135192,52,5.74,60,6.01,75,6.17,90,6.05,110,6.04,120,5.88,135,5.32,143,4.858286,150,4.48
8,39.4,5.823482,52,6.47,60,6.67,75,6.87,90,6.83,110,7.01,120,6.93,135,6.47,146.9,5.861156,150,5.67
10,37.6,6.033147,52,6.76,60,7.04,75,7.39,90,7.5,110,7.73,120,7.82,135,7.34,150,6.55,151.2,6.481749
12,37.2,6.126575,52,6.92,60,7.24,75,7.74,90,8.14,110,8.27,120,8.67,135,8.4,148.7,7.396494,150,7.3
14,37.2,6.189347,52,7.03,60,7.37,75,8,90,8.62,110,8.78,120,9.32,135,9.57,146,8.600334,150,8.23
16,37.5,6.251943,52,7.1,60,7.48,75,8.2,90,8.97,110,9.35,120,9.96,135,10.9,144.7,9.912544,150,9.34
20,38.8,6.274556,52,7.13,60,7.57,75,8.45,90,9.43,110,10.87,120,11.4,135,13.16,145.7,13.303502,150,12.69

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.74	6.01	6.17	6.05	6.04	5.88	5.32	4.48
8	6.47	6.67	6.87	6.83	7.01	6.93	6.47	5.67
10	6.76	7.04	7.39	7.5	7.73	7.82	7.34	6.55
12	6.92	7.24	7.74	8.14	8.27	8.67	8.4	7.3
14	7.03	7.37	8	8.62	8.78	9.32	9.57	8.23
16	7.1	7.48	8.2	8.97	9.35	9.96	10.9	9.34
20	7.13	7.57	8.45	9.43	10.87	11.4	13.16	12.69

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.78	143°	3.88
8	39.4°	4.5	146.9°	4.91
10	37.6°	4.78	151.2°	5.68
12	37.2°	4.88	148.7°	6.32
14	37.2°	4.93	146°	7.13
16	37.5°	4.96	144.7°	8.09
20	38.8°	4.89	145.7°	10.99

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