TOWHEE — ORC Rating | RegattaPages

GPH

654.7

OSN

634.9

LOA

11.912 m

Displacement

7004 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6072

Medium

0.836

High

0.9775

Triple Offshore

Low

0.7871

Medium

1.04

High

1.1763

Boat Specifications

Dimensions

Length overall: 11.912 m
Beam: 3.32 m
Draft: 1.79 m
Displacement: 7004 kg
Crew weight: 647 kg
Wetted surface: 31.25 m²

Sails

Mainsail: 39.33 m²
Genoa: 48.99 m²
Spinnaker: 96.56 m²
Asymmetric spinnaker: 82.36 m²

Design

Type: CAL 40
Builder: CAL
Designer: LAPWORTH
Year built: 1963

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.

6,44.2,4.435699,52,4.9,60,5.22,75,5.5,90,5.47,110,5.27,120,5.13,135,4.66,146,4.137328,150,3.96
8,43.1,5.245409,52,5.84,60,6.18,75,6.46,90,6.46,110,6.43,120,6.28,135,5.77,150,5.0114
10,43.5,5.996903,52,6.59,60,6.85,75,7.03,90,7.06,110,7.16,120,7.07,135,6.71,150,5.95,151,5.899707
12,42.6,6.398612,52,6.98,60,7.18,75,7.34,90,7.44,110,7.57,120,7.51,135,7.25,150,6.77,155,6.520964
14,41.4,6.519035,52,7.12,60,7.33,75,7.57,90,7.66,110,7.92,120,7.89,135,7.63,150,7.26,170,6.64089
16,40.9,6.588579,52,7.19,60,7.41,75,7.72,90,7.91,110,8.23,120,8.29,135,8.02,150,7.6,180,7.08
20,41.2,6.631979,52,7.24,60,7.47,75,7.86,90,8.29,110,8.62,120,8.9,135,8.8,150,8.32,180,7.77

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.9	5.22	5.5	5.47	5.27	5.13	4.66	3.96
8	5.84	6.18	6.46	6.46	6.43	6.28	5.77	5.02
10	6.59	6.85	7.03	7.06	7.16	7.07	6.71	5.95
12	6.98	7.18	7.34	7.44	7.57	7.51	7.25	6.77
14	7.12	7.33	7.57	7.66	7.92	7.89	7.63	7.26
16	7.19	7.41	7.72	7.91	8.23	8.29	8.02	7.6
20	7.24	7.47	7.86	8.29	8.62	8.9	8.8	8.32

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	3.18	146°	3.43
8	43.1°	3.83	150°	4.34
10	43.5°	4.35	151°	5.16
12	42.6°	4.71	155°	5.91
14	41.4°	4.89	170°	6.54
16	40.9°	4.98	180°	7.08
20	41.2°	4.99	180°	7.77

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