Jaffa — ORC Rating | RegattaPages

GPH

650.9

OSN

631.3

LOA

9.12 m

Displacement

2600 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.629

Medium

0.8488

High

0.9643

Triple Offshore

Low

0.8089

Medium

1.0389

High

1.1622

Boat Specifications

Dimensions

Length overall: 9.12 m
Beam: 3.19 m
Draft: 1.72 m
Displacement: 2600 kg
Crew weight: 515 kg
Wetted surface: 19.26 m²

Sails

Mainsail: 26.95 m²
Genoa: 25.12 m²
Spinnaker: 56.77 m²
Asymmetric spinnaker: 0 m²

Design

Type: One off
Builder: Steve Etheridge
Designer: Robert Weguelin
Year built: 1989

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.

6,43.5,4.701021,52,5.21,60,5.48,75,5.64,90,5.52,110,5.39,120,5.21,135,4.66,144.2,4.179696,150,3.92
8,41,5.485554,52,6.08,60,6.3,75,6.44,90,6.39,110,6.44,120,6.28,135,5.76,148.9,5.068512,150,5.01
10,38.9,5.923599,52,6.56,60,6.73,75,6.86,90,6.89,110,7.01,120,6.91,135,6.54,150,5.93,153,5.77998
12,37.9,6.108348,52,6.79,60,6.98,75,7.18,90,7.21,110,7.48,120,7.4,135,7.05,150,6.6,159.4,6.228236
14,37.7,6.19294,52,6.89,60,7.1,75,7.42,90,7.54,110,7.89,120,7.87,135,7.51,150,7.06,173.6,6.460261
16,38.4,6.290725,52,6.94,60,7.18,75,7.57,90,7.83,110,8.25,120,8.35,135,8,150,7.5,177.7,6.895555
20,39.2,6.323034,52,6.98,60,7.26,75,7.75,90,8.23,110,8.75,120,9.36,135,9.24,150,8.45,177.7,7.716216
24,41.5,6.31546,52,6.93,60,7.23,75,7.82,90,8.47,110,9.05,120,10.2,135,11.76,150,9.88,174.1,8.675958

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.21	5.48	5.64	5.52	5.39	5.21	4.66	3.92
8	6.08	6.3	6.44	6.39	6.44	6.28	5.76	5.01
10	6.56	6.73	6.86	6.89	7.01	6.91	6.54	5.93
12	6.79	6.98	7.18	7.21	7.48	7.4	7.05	6.6
14	6.89	7.1	7.42	7.54	7.89	7.87	7.51	7.06
16	6.94	7.18	7.57	7.83	8.25	8.35	8	7.5
20	6.98	7.26	7.75	8.23	8.75	9.36	9.24	8.45
24	6.93	7.23	7.82	8.47	9.05	10.2	11.76	9.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.41	144.2°	3.39
8	41°	4.14	148.9°	4.34
10	38.9°	4.61	153°	5.15
12	37.9°	4.82	159.4°	5.83
14	37.7°	4.9	173.6°	6.42
16	38.4°	4.93	177.7°	6.89
20	39.2°	4.9	177.7°	7.71
24	41.5°	4.73	174.1°	8.63

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