SHEAR TERROR — ORC Rating

GPH

527.2

OSN

514.6

LOA

12.415 m

Displacement

4983 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8017

Medium

1.031

High

1.1731

Triple Offshore

Low

1.0254

Medium

1.2657

High

1.4224

Boat Specifications

Dimensions

Length overall: 12.415 m
Beam: 3.96 m
Draft: 2.59 m
Displacement: 4983 kg
Crew weight: 935 kg
Wetted surface: 30.11 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

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.

6,42.2,5.898991,52,6.59,60,6.91,75,7.14,90,7.02,110,6.88,120,6.69,135,6.01,142.2,5.53056,150,5.04
8,39.4,6.742298,52,7.52,60,7.74,75,7.9,90,7.86,110,7.94,120,7.88,135,7.39,145.2,6.69793,150,6.35
10,37.5,7.033436,52,7.86,60,8.09,75,8.34,90,8.38,110,8.55,120,8.58,135,8.19,150,7.41,150.2,7.398312
12,36.9,7.227849,52,8.03,60,8.28,75,8.64,90,8.84,110,8.98,120,9.21,135,8.9,150,8.12,151.6,8.014564
14,36.5,7.339615,52,8.16,60,8.43,75,8.85,90,9.22,110,9.35,120,9.76,135,9.7,149.2,8.766416,150,8.7
16,36.1,7.413459,52,8.26,60,8.55,75,9.03,90,9.51,110,9.72,120,10.26,135,10.66,146.3,9.760154,150,9.38
20,36.2,7.509663,52,8.38,60,8.71,75,9.29,90,10,110,10.71,120,11.29,135,12.76,143.9,12.252629,150,11.43
24,37.5,7.499811,52,8.36,60,8.73,75,9.41,90,10.34,110,11.7,120,12.3,135,14.45,145.8,15.451941,150,14.76

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.59	6.91	7.14	7.02	6.88	6.69	6.01	5.04
8	7.52	7.74	7.9	7.86	7.94	7.88	7.39	6.35
10	7.86	8.09	8.34	8.38	8.55	8.58	8.19	7.41
12	8.03	8.28	8.64	8.84	8.98	9.21	8.9	8.12
14	8.16	8.43	8.85	9.22	9.35	9.76	9.7	8.7
16	8.26	8.55	9.03	9.51	9.72	10.26	10.66	9.38
20	8.38	8.71	9.29	10	10.71	11.29	12.76	11.43
24	8.36	8.73	9.41	10.34	11.7	12.3	14.45	14.76

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.2°	4.37	142.2°	4.37
8	39.4°	5.21	145.2°	5.5
10	37.5°	5.58	150.2°	6.42
12	36.9°	5.78	151.6°	7.05
14	36.5°	5.9	149.2°	7.53
16	36.1°	5.99	146.3°	8.12
20	36.2°	6.06	143.9°	9.9
24	37.5°	5.95	145.8°	12.78

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