J IN MOTION — ORC Rating

GPH

622.4

OSN

603.7

LOA

9.95 m

Displacement

3932 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7354

Medium

1.002

High

1.149

Triple Offshore

Low

0.947

Medium

1.2243

High

1.3744

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.43 m
Draft: 2.12 m
Displacement: 3932 kg
Crew weight: 562 kg
Wetted surface: 23.93 m²

Sails

Mainsail: 34.39 m²
Genoa: 27.03 m²
Spinnaker: 82.81 m²
Asymmetric spinnaker: 0 m²

Design

Type: J-99
Builder: J COMPOSITES
Designer: JOHNSTONE
Year built: 2019

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.

6,42.6,4.646126,52,5.21,60,5.51,75,5.74,90,5.67,110,5.74,120,5.57,135,5.03,144.8,4.515723,150,4.26
8,41,5.498804,52,6.19,60,6.46,75,6.66,90,6.75,110,6.84,120,6.72,135,6.22,148.5,5.453649,150,5.37
10,39.8,6.156581,52,6.8,60,6.98,75,7.11,90,7.23,110,7.38,120,7.3,135,7,150,6.34,151.5,6.258412
12,38.1,6.404595,52,7.08,60,7.24,75,7.41,90,7.44,110,7.82,120,7.78,135,7.46,150,7.01,158.5,6.652927
14,37.8,6.517708,52,7.18,60,7.39,75,7.67,90,7.76,110,8.17,120,8.29,135,7.94,150,7.44,180,6.81
16,37.7,6.5721,52,7.24,60,7.46,75,7.87,90,8.09,110,8.43,120,8.78,135,8.46,150,7.88,180,7.26
20,37.3,6.637556,52,7.31,60,7.52,75,8.02,90,8.58,110,8.89,120,9.41,135,9.78,150,8.88,180,8.1

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.21	5.51	5.74	5.67	5.74	5.57	5.03	4.26
8	6.19	6.46	6.66	6.75	6.84	6.72	6.22	5.37
10	6.8	6.98	7.11	7.23	7.38	7.3	7	6.34
12	7.08	7.24	7.41	7.44	7.82	7.78	7.46	7.01
14	7.18	7.39	7.67	7.76	8.17	8.29	7.94	7.44
16	7.24	7.46	7.87	8.09	8.43	8.78	8.46	7.88
20	7.31	7.52	8.02	8.58	8.89	9.41	9.78	8.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	3.42	144.8°	3.69
8	41°	4.15	148.5°	4.65
10	39.8°	4.73	151.5°	5.5
12	38.1°	5.04	158.5°	6.19
14	37.8°	5.15	180°	6.81
16	37.7°	5.2	180°	7.26
20	37.3°	5.28	180°	8.1

Loading polar chart…