JAFFA — ORC Rating | RegattaPages

GPH

619.2

OSN

599

LOA

9.95 m

Displacement

3984 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6641

Medium

0.9002

High

1.0296

Triple Offshore

Low

0.8506

Medium

1.0921

High

1.2205

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 2.11 m
Displacement: 3984 kg
Crew weight: 566 kg
Wetted surface: 23.04 m²

Sails

Mainsail: 33.41 m²
Genoa: 25.58 m²
Spinnaker: 93.94 m²
Asymmetric spinnaker: 0 m²

Design

Type: J 99
Builder: J COMPOSITES
Designer: JOHNSTONE
Year built: 2019
Stability index: 114.3

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.

6,42.9,4.736924,52,5.26,60,5.53,75,5.69,90,5.71,110,5.8,120,5.66,135,5.11,141.5,4.778892,150,4.32
8,40.6,5.571131,52,6.22,60,6.44,75,6.58,90,6.71,110,6.86,120,6.75,135,6.29,148.2,5.565408,150,5.46
10,38.8,6.133411,52,6.77,60,6.93,75,7.06,90,7.18,110,7.39,120,7.34,135,7.04,150,6.42,152.3,6.290987
12,37,6.373371,52,7.07,60,7.22,75,7.36,90,7.39,110,7.77,120,7.79,135,7.53,150,7.07,158.8,6.714405
14,36.9,6.527573,52,7.22,60,7.4,75,7.61,90,7.67,110,8.08,120,8.2,135,7.99,150,7.52,171.8,6.890446
16,36.6,6.589294,52,7.29,60,7.5,75,7.8,90,7.93,110,8.31,120,8.6,135,8.46,150,7.96,177.2,7.288702
20,37,6.661362,52,7.36,60,7.6,75,8.01,90,8.37,110,8.73,120,9.28,135,9.76,150,8.93,177.2,8.109682

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.26	5.53	5.69	5.71	5.8	5.66	5.11	4.32
8	6.22	6.44	6.58	6.71	6.86	6.75	6.29	5.46
10	6.77	6.93	7.06	7.18	7.39	7.34	7.04	6.42
12	7.07	7.22	7.36	7.39	7.77	7.79	7.53	7.07
14	7.22	7.4	7.61	7.67	8.08	8.2	7.99	7.52
16	7.29	7.5	7.8	7.93	8.31	8.6	8.46	7.96
20	7.36	7.6	8.01	8.37	8.73	9.28	9.76	8.93

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.47	141.5°	3.74
8	40.6°	4.23	148.2°	4.73
10	38.8°	4.78	152.3°	5.57
12	37°	5.09	158.8°	6.26
14	36.9°	5.22	171.8°	6.82
16	36.6°	5.29	177.2°	7.28
20	37°	5.32	177.2°	8.1

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