SHEAR TERROR — ORC Rating

GPH

529.6

OSN

517.2

LOA

12.415 m

Displacement

5159 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7995

Medium

1.0259

High

1.1597

Triple Offshore

Low

1.0226

Medium

1.2602

High

1.4083

Boat Specifications

Dimensions

Length overall: 12.415 m
Beam: 3.96 m
Draft: 2.6 m
Displacement: 5159 kg
Crew weight: 935 kg
Wetted surface: 30.29 m²

Sails

Mainsail: 64.88 m²
Genoa: 41.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 152.99 m²

Design

Type: Farr 40
Builder: Carroll Marine
Designer: Farr
Year built: 1997
Stability index: 121.1

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.

6,42.3,5.894831,52,6.57,60,6.89,75,7.12,90,7,110,6.86,120,6.67,135,5.99,142.4,5.503038,150,5.03
8,39.4,6.703475,52,7.5,60,7.72,75,7.88,90,7.85,110,7.93,120,7.86,135,7.37,145.1,6.693882,150,6.34
10,37.6,7.005014,52,7.83,60,8.06,75,8.31,90,8.35,110,8.53,120,8.55,135,8.17,150,7.4,150.3,7.379424
12,37,7.174737,52,8,60,8.24,75,8.61,90,8.8,110,8.94,120,9.17,135,8.88,150,8.11,151.8,7.988168
14,36.6,7.274381,52,8.11,60,8.38,75,8.81,90,9.17,110,9.31,120,9.71,135,9.66,149.3,8.734058,150,8.67
16,36.4,7.342584,52,8.19,60,8.47,75,8.96,90,9.45,110,9.67,120,10.2,135,10.59,146.6,9.67841,150,9.33
20,37,7.425164,52,8.26,60,8.59,75,9.17,90,9.85,110,10.6,120,11.21,135,12.66,143.9,12.141241,150,11.33

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.57	6.89	7.12	7	6.86	6.67	5.99	5.03
8	7.5	7.72	7.88	7.85	7.93	7.86	7.37	6.34
10	7.83	8.06	8.31	8.35	8.53	8.55	8.17	7.4
12	8	8.24	8.61	8.8	8.94	9.17	8.88	8.11
14	8.11	8.38	8.81	9.17	9.31	9.71	9.66	8.67
16	8.19	8.47	8.96	9.45	9.67	10.2	10.59	9.33
20	8.26	8.59	9.17	9.85	10.6	11.21	12.66	11.33

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	4.36	142.4°	4.36
8	39.4°	5.18	145.1°	5.49
10	37.6°	5.55	150.3°	6.41
12	37°	5.73	151.8°	7.04
14	36.6°	5.84	149.3°	7.51
16	36.4°	5.91	146.6°	8.08
20	37°	5.93	143.9°	9.81

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