BANTAM — ORC Rating | RegattaPages

GPH

612.1

OSN

594.3

LOA

9.95 m

Displacement

3748 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6783

Medium

0.899

High

1.0075

Triple Offshore

Low

0.8689

Medium

1.1006

High

1.2231

Boat Specifications

Dimensions

Length overall: 9.95 m
Beam: 3.41 m
Draft: 1.98 m
Displacement: 3748 kg
Crew weight: 476 kg
Wetted surface: 22.34 m²

Sails

Mainsail: 34.59 m²
Genoa: 27 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 104 m²

Design

Type: J 99
Builder: J Composites
Designer: J Boats
Year built: 2019
Stability index: 123.8

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.

6,43,4.812993,52,5.36,60,5.63,75,5.81,90,5.88,110,5.98,120,5.84,135,5.25,143.9,4.764911,150,4.45
8,40.9,5.675703,52,6.31,60,6.52,75,6.66,90,6.85,110,6.98,120,6.9,135,6.46,147.8,5.731552,150,5.6
10,38.8,6.184737,52,6.84,60,6.99,75,7.12,90,7.27,110,7.51,120,7.47,135,7.18,149.3,6.570896,150,6.53
12,37.6,6.424418,52,7.1,60,7.26,75,7.43,90,7.48,110,7.91,120,7.96,135,7.7,150,7.12,150.5,7.089056
14,37.2,6.528317,52,7.23,60,7.43,75,7.67,90,7.76,110,8.24,120,8.43,135,8.21,149.8,7.509186,150,7.49
16,37.2,6.603644,52,7.3,60,7.52,75,7.86,90,8.03,110,8.5,120,8.92,135,8.79,150,7.85,174.8,7.008846
20,37.6,6.651608,52,7.36,60,7.62,75,8.07,90,8.49,110,9.04,120,9.83,135,10.73,139.8,10.185966,150,8.98

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.36	5.63	5.81	5.88	5.98	5.84	5.25	4.45
8	6.31	6.52	6.66	6.85	6.98	6.9	6.46	5.6
10	6.84	6.99	7.12	7.27	7.51	7.47	7.18	6.53
12	7.1	7.26	7.43	7.48	7.91	7.96	7.7	7.12
14	7.23	7.43	7.67	7.76	8.24	8.43	8.21	7.49
16	7.3	7.52	7.86	8.03	8.5	8.92	8.79	7.85
20	7.36	7.62	8.07	8.49	9.04	9.83	10.73	8.98

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.52	143.9°	3.85
8	40.9°	4.29	147.8°	4.85
10	38.8°	4.82	149.3°	5.65
12	37.6°	5.09	150.5°	6.17
14	37.2°	5.2	149.8°	6.49
16	37.2°	5.26	174.8°	6.98
20	37.6°	5.27	139.8°	7.78

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