JOY IV — ORC Rating | RegattaPages

GPH

669.5

OSN

649.3

LOA

9.61 m

Displacement

3858 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6092

Medium

0.8237

High

0.9384

Triple Offshore

Low

0.7834

Medium

1.0128

High

1.1243

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.94 m
Displacement: 3858 kg
Crew weight: 350 kg
Wetted surface: 21.56 m²

Sails

Mainsail: 26.41 m²
Genoa: 29.95 m²
Spinnaker: 60.13 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 31.7 LR
Builder: Beneteau
Designer: Finot
Year built: 1998
Stability index: 109.6

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.

6,43,4.5532,52,5.04,60,5.29,75,5.45,90,5.35,110,5.17,120,5,135,4.47,145.7,3.946262,150,3.77
8,40.6,5.29455,52,5.91,60,6.13,75,6.29,90,6.24,110,6.25,120,6.1,135,5.57,149.8,4.859565,150,4.85
10,39.4,5.758777,52,6.42,60,6.61,75,6.76,90,6.77,110,6.88,120,6.8,135,6.42,150,5.77,152.9,5.627868
12,38.8,5.953771,52,6.65,60,6.85,75,7.04,90,7.1,110,7.28,120,7.24,135,6.96,150,6.5,158.2,6.160568
14,38.8,6.056423,52,6.74,60,6.95,75,7.22,90,7.35,110,7.61,120,7.61,135,7.37,150,6.98,170,6.417496
16,38.8,6.107748,52,6.8,60,7.01,75,7.33,90,7.56,110,7.87,120,7.97,135,7.77,150,7.36,177.2,6.828152
20,39.4,6.134068,52,6.82,60,7.05,75,7.44,90,7.84,110,8.19,120,8.58,135,8.61,150,8.14,179,7.55115

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.04	5.29	5.45	5.35	5.17	5	4.47	3.77
8	5.91	6.13	6.29	6.24	6.25	6.1	5.57	4.85
10	6.42	6.61	6.76	6.77	6.88	6.8	6.42	5.77
12	6.65	6.85	7.04	7.1	7.28	7.24	6.96	6.5
14	6.74	6.95	7.22	7.35	7.61	7.61	7.37	6.98
16	6.8	7.01	7.33	7.56	7.87	7.97	7.77	7.36
20	6.82	7.05	7.44	7.84	8.19	8.58	8.61	8.14

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.33	145.7°	3.26
8	40.6°	4.02	149.8°	4.2
10	39.4°	4.45	152.9°	5.01
12	38.8°	4.64	158.2°	5.72
14	38.8°	4.72	170°	6.32
16	38.8°	4.76	177.2°	6.82
20	39.4°	4.74	179°	7.55

Loading polar chart…