Westerly — ORC Rating

GPH

445.2

OSN

437.2

LOA

20.726 m

Displacement

10132 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8919

Medium

1.1952

High

1.3925

Triple Offshore

Low

1.1801

Medium

1.5168

High

1.7299

Boat Specifications

Dimensions

Length overall: 20.726 m
Beam: 4.6 m
Draft: 3.08 m
Displacement: 10132 kg
Crew weight: 950 kg
Wetted surface: 51.15 m²

Sails

Mainsail: 92.78 m²
Genoa: 108.54 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 247.15 m²

Design

Type: Santa Cruz 70
Builder: Lee / Santa Cruz
Designer: Bill Lee
Year built: 1987
Stability index: 124.3

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.

6,45.6,6.96049,52,7.66,60,8.3,75,8.96,90,8.98,110,8.04,120,7.39,135,6.65,141.2,6.146242,150,5.54
8,43.6,7.953913,52,8.89,60,9.47,75,10.02,90,10.14,110,9.66,120,9.35,135,8.61,141.5,7.986117,150,7.22
10,42.9,8.531924,52,9.46,60,9.91,75,10.5,90,10.89,110,10.47,120,10.43,135,10.01,145.2,9.255322,150,8.78
12,41.8,8.772918,52,9.74,60,10.16,75,10.86,90,11.43,110,11.35,120,11.3,135,11.07,150,9.9,150.5,9.858039
14,41.2,8.87808,52,9.89,60,10.32,75,11.11,90,11.81,110,12.17,120,11.95,135,12.2,148.4,11.012919,150,10.83
16,41.1,8.983982,52,9.93,60,10.4,75,11.3,90,12.1,110,12.93,120,12.58,135,13.34,147.8,12.219432,150,11.94
20,41.4,9.238632,52,10.18,60,10.75,75,11.57,90,12.5,110,14.05,120,14.38,135,15.3,147.1,15.149713,150,14.69

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.66	8.3	8.96	8.98	8.04	7.39	6.65	5.54
8	8.89	9.47	10.02	10.14	9.66	9.35	8.61	7.22
10	9.46	9.91	10.5	10.89	10.47	10.43	10.01	8.78
12	9.74	10.16	10.86	11.43	11.35	11.3	11.07	9.9
14	9.89	10.32	11.11	11.81	12.17	11.95	12.2	10.83
16	9.93	10.4	11.3	12.1	12.93	12.58	13.34	11.94
20	10.18	10.75	11.57	12.5	14.05	14.38	15.3	14.69

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.6°	4.87	141.2°	4.79
8	43.6°	5.76	141.5°	6.25
10	42.9°	6.25	145.2°	7.6
12	41.8°	6.54	150.5°	8.58
14	41.2°	6.68	148.4°	9.38
16	41.1°	6.77	147.8°	10.34
20	41.4°	6.93	147.1°	12.72

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