Kelso — ORC Rating | RegattaPages

GPH

622.1

OSN

606.8

LOA

11.97 m

Displacement

7001 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7406

Medium

0.9927

High

1.1384

Triple Offshore

Low

0.9568

Medium

1.2211

High

1.3547

Boat Specifications

Dimensions

Length overall: 11.97 m
Beam: 3.5 m
Draft: 1.95 m
Displacement: 7001 kg
Crew weight: 677 kg
Wetted surface: 29.14 m²

Sails

Mainsail: 43.62 m²
Genoa: 46.41 m²
Spinnaker: 81.16 m²
Asymmetric spinnaker: 88.63 m²

Design

Type: CROWN 39
Builder: Finngulf Marine
Designer: Håkan Södergren
Year built: 1986

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.

6,42.3,4.880812,52,5.45,60,5.73,75,5.95,90,5.89,110,5.66,120,5.47,135,4.91,145,4.358165,150,4.12
8,41.3,5.723686,52,6.44,60,6.71,75,6.88,90,6.86,110,6.82,120,6.62,135,5.99,150,5.19,150.6,5.153729
10,41.3,6.362609,52,6.96,60,7.14,75,7.28,90,7.32,110,7.38,120,7.27,135,6.89,150,6.12,151.8,6.025166
12,40,6.553145,52,7.16,60,7.34,75,7.51,90,7.58,110,7.72,120,7.64,135,7.36,150,6.92,156.7,6.608987
14,39.1,6.610429,52,7.25,60,7.44,75,7.68,90,7.81,110,8.05,120,7.99,135,7.7,150,7.36,180,6.72
16,38.6,6.640901,52,7.3,60,7.5,75,7.81,90,8.02,110,8.36,120,8.36,135,8.06,150,7.68,180,7.22
20,38.4,6.673528,52,7.32,60,7.54,75,7.93,90,8.36,110,8.7,120,9.02,135,8.86,150,8.38,180,7.87

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.45	5.73	5.95	5.89	5.66	5.47	4.91	4.12
8	6.44	6.71	6.88	6.86	6.82	6.62	5.99	5.19
10	6.96	7.14	7.28	7.32	7.38	7.27	6.89	6.12
12	7.16	7.34	7.51	7.58	7.72	7.64	7.36	6.92
14	7.25	7.44	7.68	7.81	8.05	7.99	7.7	7.36
16	7.3	7.5	7.81	8.02	8.36	8.36	8.06	7.68
20	7.32	7.54	7.93	8.36	8.7	9.02	8.86	8.38

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.61	145°	3.57
8	41.3°	4.3	150.6°	4.49
10	41.3°	4.78	151.8°	5.31
12	40°	5.02	156.7°	6.07
14	39.1°	5.13	180°	6.72
16	38.6°	5.19	180°	7.22
20	38.4°	5.23	180°	7.87

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