WHITE SHADOW — ORC Rating

GPH

566

OSN

548.7

LOA

17.46 m

Displacement

21391 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7162

Medium

0.9711

High

1.126

Triple Offshore

Low

0.9212

Medium

1.1999

High

1.3401

Boat Specifications

Dimensions

Length overall: 17.46 m
Beam: 4.74 m
Draft: 2.76 m
Displacement: 21391 kg
Crew weight: 1040 kg
Wetted surface: 58.24 m²

Sails

Mainsail: 67.76 m²
Genoa: 96.66 m²
Spinnaker: 241.56 m²
Asymmetric spinnaker: 0 m²

Design

Type: SWAN 57
Builder: NAUTOR
Designer: SPARKMAN&STEPHENS
Year built: 1977
Stability index: 126.2

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.

6,43.2,5.281434,52,5.88,60,6.19,75,6.38,90,6.24,110,6.05,120,5.94,135,5.35,141.4,5.003068,150,4.51
8,40.8,6.169129,52,6.93,60,7.21,75,7.4,90,7.3,110,7.34,120,7.23,135,6.69,147.8,5.873363,150,5.74
10,40,6.788118,52,7.6,60,7.85,75,8.04,90,8.01,110,8.17,120,8.13,135,7.72,149.6,6.863659,150,6.84
12,39.6,7.112143,52,7.95,60,8.19,75,8.39,90,8.43,110,8.61,120,8.64,135,8.4,150,7.75,154.1,7.503687
14,39.4,7.311705,52,8.12,60,8.37,75,8.61,90,8.7,110,8.86,120,8.97,135,8.83,150,8.37,159.1,7.942587
16,38.8,7.390888,52,8.22,60,8.47,75,8.75,90,8.9,110,9.04,120,9.24,135,9.19,150,8.8,170,8.123413
20,38.4,7.502934,52,8.34,60,8.58,75,8.92,90,9.18,110,9.3,120,9.61,135,9.83,150,9.49,178.4,8.87346

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.88	6.19	6.38	6.24	6.05	5.94	5.35	4.51
8	6.93	7.21	7.4	7.3	7.34	7.23	6.69	5.74
10	7.6	7.85	8.04	8.01	8.17	8.13	7.72	6.84
12	7.95	8.19	8.39	8.43	8.61	8.64	8.4	7.75
14	8.12	8.37	8.61	8.7	8.86	8.97	8.83	8.37
16	8.22	8.47	8.75	8.9	9.04	9.24	9.19	8.8
20	8.34	8.58	8.92	9.18	9.3	9.61	9.83	9.49

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.85	141.4°	3.91
8	40.8°	4.67	147.8°	4.97
10	40°	5.2	149.6°	5.92
12	39.6°	5.48	154.1°	6.75
14	39.4°	5.65	159.1°	7.42
16	38.8°	5.76	170°	8
20	38.4°	5.88	178.4°	8.87

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