SUNDOWNER — ORC Rating

GPH

711.5

OSN

688.2

LOA

9.25 m

Displacement

4730 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5658

Medium

0.7774

High

0.9128

Triple Offshore

Low

0.7282

Medium

0.9552

High

1.0794

Boat Specifications

Dimensions

Length overall: 9.25 m
Beam: 3.26 m
Draft: 1.83 m
Displacement: 4730 kg
Crew weight: 515 kg
Wetted surface: 23.24 m²

Sails

Mainsail: 24.01 m²
Genoa: 30.33 m²
Spinnaker: 72.96 m²
Asymmetric spinnaker: 0 m²

Design

Type: Jarkan 925
Builder: Jarkan
Designer: John King
Year built: 1984
Stability index: 111.9

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.

6,43.6,4.004574,52,4.46,60,4.72,75,4.91,90,4.89,110,4.99,120,4.86,135,4.43,146.9,3.915395,150,3.79
8,41.8,4.681573,52,5.27,60,5.56,75,5.78,90,5.89,110,6.02,120,5.89,135,5.41,150,4.77,151.4,4.703964
10,41.8,5.285214,52,5.91,60,6.14,75,6.3,90,6.47,110,6.57,120,6.5,135,6.22,150,5.62,152,5.526942
12,40.8,5.733195,52,6.29,60,6.44,75,6.58,90,6.76,110,6.89,120,6.84,135,6.64,150,6.29,159.2,5.95833
14,39.3,5.931457,52,6.49,60,6.64,75,6.78,90,6.89,110,7.21,120,7.17,135,6.95,150,6.66,173.6,6.15838
16,38.7,6.009504,52,6.59,60,6.76,75,6.96,90,7.02,110,7.48,120,7.51,135,7.29,150,6.95,179,6.530995
20,39,6.060638,52,6.63,60,6.83,75,7.18,90,7.43,110,7.77,120,8.05,135,7.97,150,7.59,179,7.09108

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.46	4.72	4.91	4.89	4.99	4.86	4.43	3.79
8	5.27	5.56	5.78	5.89	6.02	5.89	5.41	4.77
10	5.91	6.14	6.3	6.47	6.57	6.5	6.22	5.62
12	6.29	6.44	6.58	6.76	6.89	6.84	6.64	6.29
14	6.49	6.64	6.78	6.89	7.21	7.17	6.95	6.66
16	6.59	6.76	6.96	7.02	7.48	7.51	7.29	6.95
20	6.63	6.83	7.18	7.43	7.77	8.05	7.97	7.59

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	2.9	146.9°	3.28
8	41.8°	3.49	151.4°	4.13
10	41.8°	3.94	152°	4.88
12	40.8°	4.34	159.2°	5.57
14	39.3°	4.59	173.6°	6.12
16	38.7°	4.69	179°	6.53
20	39°	4.71	179°	7.09

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