JAFFA — ORC Rating | RegattaPages

GPH

629.7

OSN

609.1

LOA

9.95 m

Displacement

4029 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6421

Medium

0.8821

High

1.0185

Triple Offshore

Low

0.8277

Medium

1.0778

High

1.214

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 2.11 m
Displacement: 4029 kg
Crew weight: 581 kg
Wetted surface: 23.16 m²

Sails

Mainsail: 32.65 m²
Genoa: 26.14 m²
Spinnaker: 86.32 m²
Asymmetric spinnaker: 0 m²

Design

Type: J 99
Builder: J COMPOSITES
Designer: JOHNSTONE
Year built: 2019
Stability index: 110.2

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.

6,42.9,4.518507,52,5.06,60,5.35,75,5.57,90,5.62,110,5.7,120,5.54,135,5,144.8,4.491248,150,4.24
8,41.2,5.356087,52,6.04,60,6.33,75,6.53,90,6.7,110,6.81,120,6.69,135,6.18,148.4,5.447755,150,5.36
10,40.6,6.05844,52,6.69,60,6.88,75,7.02,90,7.2,110,7.35,120,7.27,135,6.97,150,6.33,151.6,6.241129
12,38.4,6.367286,52,7.02,60,7.18,75,7.32,90,7.4,110,7.78,120,7.74,135,7.43,150,7.01,158.3,6.672891
14,37.8,6.505053,52,7.17,60,7.36,75,7.59,90,7.65,110,8.12,120,8.24,135,7.91,150,7.43,171.8,6.83993
16,37.6,6.563256,52,7.23,60,7.45,75,7.81,90,7.97,110,8.37,120,8.71,135,8.42,150,7.87,177.2,7.238642
20,37.5,6.655294,52,7.29,60,7.52,75,8.03,90,8.51,110,8.81,120,9.33,135,9.7,150,8.86,177.2,8.04961

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.06	5.35	5.57	5.62	5.7	5.54	5	4.24
8	6.04	6.33	6.53	6.7	6.81	6.69	6.18	5.36
10	6.69	6.88	7.02	7.2	7.35	7.27	6.97	6.33
12	7.02	7.18	7.32	7.4	7.78	7.74	7.43	7.01
14	7.17	7.36	7.59	7.65	8.12	8.24	7.91	7.43
16	7.23	7.45	7.81	7.97	8.37	8.71	8.42	7.87
20	7.29	7.52	8.03	8.51	8.81	9.33	9.7	8.86

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.31	144.8°	3.67
8	41.2°	4.03	148.4°	4.64
10	40.6°	4.6	151.6°	5.49
12	38.4°	4.99	158.3°	6.2
14	37.8°	5.14	171.8°	6.77
16	37.6°	5.2	177.2°	7.23
20	37.5°	5.28	177.2°	8.04

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