DRIFTER SAIL — ORC Rating

GPH

466.5

OSN

455.8

LOA

15.235 m

Displacement

8173 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8773

Medium

1.1497

High

1.3416

Triple Offshore

Low

1.1366

Medium

1.4387

High

1.6511

Boat Specifications

Dimensions

Length overall: 15.235 m
Beam: 4.21 m
Draft: 3.46 m
Displacement: 8173 kg
Crew weight: 830 kg
Wetted surface: 45.02 m²

Sails

Mainsail: 92.63 m²
Genoa: 66.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 235.44 m²

Design

Type: Swan 50
Builder: OY Nautor AB
Designer: Kouyoumdjian
Year built: 2016

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.

6,43,6.631538,52,7.39,60,7.81,75,8.12,90,7.97,110,7.69,120,7.31,135,6.51,141.1,6.039244,150,5.43
8,40.3,7.499984,52,8.46,60,8.83,75,9.13,90,9.05,110,9.03,120,8.79,135,8.21,142.8,7.570337,150,6.96
10,39.1,7.911898,52,8.9,60,9.24,75,9.7,90,9.8,110,9.92,120,9.76,135,9.3,147.2,8.49427,150,8.24
12,38.3,8.155189,52,9.17,60,9.52,75,10.08,90,10.44,110,10.71,120,10.67,135,10.3,150,9.2,151.8,9.066117
14,38.2,8.373026,52,9.35,60,9.75,75,10.39,90,10.9,110,11.3,120,11.59,135,11.41,149.7,10.099658,150,10.07
16,37.7,8.480536,52,9.5,60,9.93,75,10.64,90,11.28,110,11.85,120,12.43,135,12.58,147.1,11.433746,150,11.08
20,37.8,8.605906,52,9.69,60,10.17,75,11,90,11.9,110,12.99,120,13.84,135,14.48,145.8,14.315413,150,13.67
24,38.9,8.634833,52,9.68,60,10.22,75,11.19,90,12.36,110,14.11,120,14.78,135,17.05,147.6,17.433985,150,17

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.39	7.81	8.12	7.97	7.69	7.31	6.51	5.43
8	8.46	8.83	9.13	9.05	9.03	8.79	8.21	6.96
10	8.9	9.24	9.7	9.8	9.92	9.76	9.3	8.24
12	9.17	9.52	10.08	10.44	10.71	10.67	10.3	9.2
14	9.35	9.75	10.39	10.9	11.3	11.59	11.41	10.07
16	9.5	9.93	10.64	11.28	11.85	12.43	12.58	11.08
20	9.69	10.17	11	11.9	12.99	13.84	14.48	13.67
24	9.68	10.22	11.19	12.36	14.11	14.78	17.05	17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	4.85	141.1°	4.7
8	40.3°	5.72	142.8°	6.03
10	39.1°	6.14	147.2°	7.14
12	38.3°	6.4	151.8°	7.99
14	38.2°	6.58	149.7°	8.72
16	37.7°	6.71	147.1°	9.6
20	37.8°	6.8	145.8°	11.84
24	38.9°	6.72	147.6°	14.72

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