SILHOUETTE II — ORC Rating

GPH

648.4

OSN

629.7

LOA

11.21 m

Displacement

6737 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6327

Medium

0.8533

High

0.9852

Triple Offshore

Low

0.81

Medium

1.0429

High

1.1645

Boat Specifications

Dimensions

Length overall: 11.21 m
Beam: 3.54 m
Draft: 2.06 m
Displacement: 6737 kg
Crew weight: 680 kg
Wetted surface: 26.53 m²

Sails

Mainsail: 31.09 m²
Genoa: 46.39 m²
Spinnaker: 98.21 m²
Asymmetric spinnaker: 0 m²

Design

Type: FRERS 37
Builder: AST. SAN ISIDRO
Designer: GERMAN FRERS
Year built: 1980

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.

6,42,4.548239,52,5.09,60,5.35,75,5.55,90,5.48,110,5.35,120,5.22,135,4.78,147,4.23289,150,4.09
8,40.5,5.273499,52,5.98,60,6.26,75,6.45,90,6.43,110,6.47,120,6.33,135,5.83,150,5.1,151,5.053625
10,41.1,6.011439,52,6.6,60,6.77,75,6.9,90,6.93,110,7.05,120,6.98,135,6.68,150,5.99,151,5.934008
12,39.6,6.320462,52,6.89,60,7.03,75,7.16,90,7.22,110,7.4,120,7.35,135,7.12,150,6.72,157,6.409526
14,38.6,6.423376,52,7.03,60,7.19,75,7.36,90,7.42,110,7.71,120,7.69,135,7.46,150,7.12,178,6.513968
16,38.2,6.477006,52,7.1,60,7.28,75,7.53,90,7.63,110,7.95,120,8.03,135,7.8,150,7.43,180,6.97
20,38.2,6.502456,52,7.14,60,7.35,75,7.72,90,8.01,110,8.25,120,8.54,135,8.49,150,8.07,180,7.59

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.09	5.35	5.55	5.48	5.35	5.22	4.78	4.09
8	5.98	6.26	6.45	6.43	6.47	6.33	5.83	5.1
10	6.6	6.77	6.9	6.93	7.05	6.98	6.68	5.99
12	6.89	7.03	7.16	7.22	7.4	7.35	7.12	6.72
14	7.03	7.19	7.36	7.42	7.71	7.69	7.46	7.12
16	7.1	7.28	7.53	7.63	7.95	8.03	7.8	7.43
20	7.14	7.35	7.72	8.01	8.25	8.54	8.49	8.07

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.38	147°	3.55
8	40.5°	4.01	151°	4.42
10	41.1°	4.53	151°	5.19
12	39.6°	4.87	157°	5.9
14	38.6°	5.02	178°	6.51
16	38.2°	5.09	180°	6.97
20	38.2°	5.11	180°	7.59

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