Belmont — ORC Rating | RegattaPages

GPH

566.7

OSN

549.9

LOA

15.633 m

Displacement

19004 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7072

Medium

0.9659

High

1.14

Triple Offshore

Low

0.9122

Medium

1.1995

High

1.3577

Boat Specifications

Dimensions

Length overall: 15.633 m
Beam: 4.45 m
Draft: 2.71 m
Displacement: 19004 kg
Crew weight: 1200 kg
Wetted surface: 52.08 m²

Sails

Mainsail: 64.5 m²
Genoa: 89.09 m²
Spinnaker: 198.66 m²
Asymmetric spinnaker: 0 m²

Design

Type: SWAN 51 (1981)
Builder: NAUTOR
Designer: German Frers
Year built: 1981

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.

6,42.8,5.165389,52,5.76,60,6.09,75,6.35,90,6.3,110,6,120,5.87,135,5.34,142,4.961861,150,4.52
8,40.9,6.019685,52,6.81,60,7.17,75,7.45,90,7.4,110,7.3,120,7.13,135,6.54,149,5.72817,150,5.67
10,40.9,6.81349,52,7.66,60,7.93,75,8.12,90,8.12,110,8.2,120,8.1,135,7.63,150,6.67,150.5,6.640963
12,40.7,7.360173,52,8.09,60,8.29,75,8.45,90,8.49,110,8.64,120,8.59,135,8.3,150,7.6,152,7.474962
14,39.4,7.531703,52,8.29,60,8.5,75,8.68,90,8.74,110,8.96,120,8.94,135,8.7,150,8.25,158.5,7.835192
16,38.6,7.613364,52,8.4,60,8.61,75,8.87,90,8.96,110,9.16,120,9.28,135,9.05,150,8.64,180,7.92
20,38.2,7.724053,52,8.49,60,8.72,75,9.08,90,9.36,110,9.48,120,9.79,135,9.77,150,9.29,180,8.74

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.76	6.09	6.35	6.3	6	5.87	5.34	4.52
8	6.81	7.17	7.45	7.4	7.3	7.13	6.54	5.67
10	7.66	7.93	8.12	8.12	8.2	8.1	7.63	6.67
12	8.09	8.29	8.45	8.49	8.64	8.59	8.3	7.6
14	8.29	8.5	8.68	8.74	8.96	8.94	8.7	8.25
16	8.4	8.61	8.87	8.96	9.16	9.28	9.05	8.64
20	8.49	8.72	9.08	9.36	9.48	9.79	9.77	9.29

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.79	142°	3.91
8	40.9°	4.55	149°	4.91
10	40.9°	5.15	150.5°	5.78
12	40.7°	5.58	152°	6.6
14	39.4°	5.82	158.5°	7.29
16	38.6°	5.95	180°	7.92
20	38.2°	6.07	180°	8.74

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