SEA WITCH — ORC Rating

GPH

556.6

OSN

544

LOA

13.354 m

Displacement

8988 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7536

Medium

0.9743

High

1.0832

Triple Offshore

Low

0.9689

Medium

1.2049

High

1.3188

Boat Specifications

Dimensions

Length overall: 13.354 m
Beam: 3.97 m
Draft: 2.11 m
Displacement: 8988 kg
Crew weight: 526 kg
Wetted surface: 35.47 m²

Sails

Mainsail: 65.38 m²
Genoa: 59.11 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 157.32 m²

Design

Type: FIRST 44.7
Builder: BENETEAU
Designer: FARR
Year built: 2004
Stability index: 128.4

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.

6,43.6,5.620213,52,6.21,60,6.54,75,6.79,90,6.69,110,6.44,120,6.3,135,5.68,143.3,5.176012,150,4.8
8,41.2,6.445912,52,7.18,60,7.45,75,7.64,90,7.59,110,7.61,120,7.51,135,6.99,146.4,6.267099,150,6.03
10,40,6.82728,52,7.62,60,7.88,75,8.07,90,8.1,110,8.24,120,8.19,135,7.86,149.6,7.09554,150,7.07
12,39.3,7.016953,52,7.82,60,8.06,75,8.34,90,8.44,110,8.65,120,8.68,135,8.41,150,7.81,150.5,7.766939
14,38.8,7.095766,52,7.93,60,8.17,75,8.5,90,8.72,110,8.92,120,9.13,135,8.9,150,8.25,151.1,8.167093
16,38.8,7.172755,52,8,60,8.25,75,8.62,90,8.95,110,9.16,120,9.51,135,9.42,150,8.62,173.6,7.677849
20,40.2,7.305615,52,8.05,60,8.32,75,8.77,90,9.23,110,9.58,120,10.09,135,10.62,150,9.38,175.7,8.503937

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.21	6.54	6.79	6.69	6.44	6.3	5.68	4.8
8	7.18	7.45	7.64	7.59	7.61	7.51	6.99	6.03
10	7.62	7.88	8.07	8.1	8.24	8.19	7.86	7.07
12	7.82	8.06	8.34	8.44	8.65	8.68	8.41	7.81
14	7.93	8.17	8.5	8.72	8.92	9.13	8.9	8.25
16	8	8.25	8.62	8.95	9.16	9.51	9.42	8.62
20	8.05	8.32	8.77	9.23	9.58	10.09	10.62	9.38

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	4.07	143.3°	4.15
8	41.2°	4.85	146.4°	5.22
10	40°	5.23	149.6°	6.12
12	39.3°	5.43	150.5°	6.76
14	38.8°	5.53	151.1°	7.15
16	38.8°	5.59	173.6°	7.63
20	40.2°	5.58	175.7°	8.48

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