Jonathan III — ORC Rating

GPH

593.4

OSN

576

LOA

11.924 m

Displacement

7359 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6904

Medium

0.9316

High

1.0705

Triple Offshore

Low

0.8878

Medium

1.1398

High

1.269

Boat Specifications

Dimensions

Length overall: 11.924 m
Beam: 3.77 m
Draft: 2.43 m
Displacement: 7359 kg
Crew weight: 855 kg
Wetted surface: 32.11 m²

Sails

Mainsail: 47.01 m²
Genoa: 50.81 m²
Spinnaker: 101.92 m²
Asymmetric spinnaker: 0 m²

Design

Type: First 40.7
Builder: Bennetau
Designer: Farr
Year built: 1997

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.

6,42.4,5.213585,52,5.81,60,6.09,75,6.26,90,6.13,110,5.76,120,5.58,135,5,143.3,4.527451,150,4.19
8,40.3,6.083903,52,6.79,60,7,75,7.13,90,7.07,110,6.96,120,6.79,135,6.21,148,5.471388,150,5.36
10,38.6,6.589719,52,7.31,60,7.48,75,7.59,90,7.59,110,7.63,120,7.53,135,7.11,150,6.36,151.6,6.263865
12,37.5,6.793946,52,7.54,60,7.72,75,7.88,90,7.92,110,8.05,120,7.99,135,7.68,150,7.15,156.2,6.841832
14,37,6.899267,52,7.65,60,7.84,75,8.08,90,8.19,110,8.41,120,8.39,135,8.09,150,7.67,165.1,7.129729
16,37,6.974396,52,7.71,60,7.91,75,8.21,90,8.43,110,8.69,120,8.76,135,8.49,150,8.06,176.3,7.45554
20,37,7.074566,52,7.79,60,8.01,75,8.39,90,8.75,110,9.05,120,9.43,135,9.35,150,8.83,178.6,8.212452
24,37.6,7.080744,52,7.81,60,8.05,75,8.5,90,8.98,110,9.25,120,9.88,135,10.46,150,9.73,178.1,8.934912

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.81	6.09	6.26	6.13	5.76	5.58	5	4.19
8	6.79	7	7.13	7.07	6.96	6.79	6.21	5.36
10	7.31	7.48	7.59	7.59	7.63	7.53	7.11	6.36
12	7.54	7.72	7.88	7.92	8.05	7.99	7.68	7.15
14	7.65	7.84	8.08	8.19	8.41	8.39	8.09	7.67
16	7.71	7.91	8.21	8.43	8.69	8.76	8.49	8.06
20	7.79	8.01	8.39	8.75	9.05	9.43	9.35	8.83
24	7.81	8.05	8.5	8.98	9.25	9.88	10.46	9.73

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.85	143.3°	3.63
8	40.3°	4.64	148°	4.64
10	38.6°	5.15	151.6°	5.51
12	37.5°	5.39	156.2°	6.26
14	37°	5.51	165.1°	6.89
16	37°	5.57	176.3°	7.44
20	37°	5.65	178.6°	8.21
24	37.6°	5.61	178.1°	8.93

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