JOY IV — ORC Rating | RegattaPages

GPH

660.6

OSN

641.6

LOA

9.85 m

Displacement

3701 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6888

Medium

0.9409

High

1.0793

Triple Offshore

Low

0.8897

Medium

1.1549

High

1.2921

Boat Specifications

Dimensions

Length overall: 9.85 m
Beam: 3.22 m
Draft: 1.93 m
Displacement: 3701 kg
Crew weight: 581 kg
Wetted surface: 21.93 m²

Sails

Mainsail: 26.62 m²
Genoa: 31.89 m²
Spinnaker: 61.63 m²
Asymmetric spinnaker: 0 m²

Design

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

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.

6,42.5,4.475928,52,5.04,60,5.33,75,5.55,90,5.48,110,5.23,120,5.07,135,4.58,146,4.028768,150,3.86
8,41,5.273552,52,5.95,60,6.22,75,6.42,90,6.41,110,6.35,120,6.18,135,5.64,150,4.9,150.2,4.886113
10,40.1,5.896031,52,6.52,60,6.7,75,6.84,90,6.87,110,6.93,120,6.85,135,6.5,150,5.8,151.9,5.702128
12,38.7,6.137639,52,6.78,60,6.94,75,7.1,90,7.16,110,7.32,120,7.24,135,6.97,150,6.55,157.9,6.20596
14,38.1,6.213982,52,6.87,60,7.05,75,7.31,90,7.42,110,7.71,120,7.65,135,7.34,150,6.98,180,6.38
16,37.9,6.24775,52,6.91,60,7.11,75,7.44,90,7.69,110,8.08,120,8.1,135,7.77,150,7.32,180,6.85
20,38.5,6.261115,52,6.91,60,7.13,75,7.55,90,8.07,110,8.5,120,8.96,135,8.73,150,8.12,180,7.53

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.04	5.33	5.55	5.48	5.23	5.07	4.58	3.86
8	5.95	6.22	6.42	6.41	6.35	6.18	5.64	4.9
10	6.52	6.7	6.84	6.87	6.93	6.85	6.5	5.8
12	6.78	6.94	7.1	7.16	7.32	7.24	6.97	6.55
14	6.87	7.05	7.31	7.42	7.71	7.65	7.34	6.98
16	6.91	7.11	7.44	7.69	8.08	8.1	7.77	7.32
20	6.91	7.13	7.55	8.07	8.5	8.96	8.73	8.12

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.5°	3.3	146°	3.34
8	41°	3.98	150.2°	4.24
10	40.1°	4.51	151.9°	5.03
12	38.7°	4.79	157.9°	5.75
14	38.1°	4.89	180°	6.38
16	37.9°	4.93	180°	6.85
20	38.5°	4.9	180°	7.53

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