EVOLUTION : ORC Rating

GPH

459.7

OSN

450.2

LOA

20.727 m

Displacement

11394 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8518

Medium

1.1585

High

1.3536

Triple Offshore

Low

1.1307

Medium

1.4759

High

1.6876

Boat Specifications

Dimensions

Length overall: 20.727 m
Beam: 4.58 m
Draft: 2.85 m
Displacement: 11394 kg
Crew weight: 1225 kg
Wetted surface: 54.2 m²

Sails

Mainsail: 96.6 m²
Genoa: 104.96 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 217.82 m²

Design

Type: SANTA CRUZ 70
Builder: BILL LEE YACHTS
Designer: LEE
Year built: 1989

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,45,6.660946,52,7.39,60,7.99,75,8.56,90,8.54,110,7.64,120,7.05,135,6.26,140.5,5.818892,150,5.19
8,43.5,7.830439,52,8.77,60,9.36,75,9.85,90,9.9,110,9.32,120,8.96,135,8.06,142,7.385686,150,6.72
10,42.4,8.395904,52,9.4,60,9.86,75,10.36,90,10.59,110,10.19,120,10.15,135,9.57,143,8.852599,150,8.16
12,41.6,8.718931,52,9.71,60,10.11,75,10.71,90,11.19,110,10.88,120,11,135,10.47,148.5,9.476448,150,9.33
14,40.9,8.850922,52,9.87,60,10.27,75,10.96,90,11.59,110,11.63,120,11.67,135,11.43,150,10.3,154.2,9.885388
16,40.5,8.968893,52,9.94,60,10.36,75,11.15,90,11.89,110,12.35,120,12.27,135,12.47,150,11.1,154,10.669853
20,40.9,9.247824,52,10.2,60,10.7,75,11.45,90,12.27,110,13.56,120,13.7,135,14.55,148.8,13.25751,150,13.1

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.39	7.99	8.56	8.54	7.64	7.05	6.26	5.19
8	8.77	9.36	9.85	9.9	9.32	8.96	8.06	6.72
10	9.4	9.86	10.36	10.59	10.19	10.15	9.57	8.16
12	9.71	10.11	10.71	11.19	10.88	11	10.47	9.33
14	9.87	10.27	10.96	11.59	11.63	11.67	11.43	10.3
16	9.94	10.36	11.15	11.89	12.35	12.27	12.47	11.1
20	10.2	10.7	11.45	12.27	13.56	13.7	14.55	13.1

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45°	4.71	140.5°	4.49
8	43.5°	5.68	142°	5.82
10	42.4°	6.2	143°	7.07
12	41.6°	6.52	148.5°	8.08
14	40.9°	6.69	154.2°	8.9
16	40.5°	6.82	154°	9.59
20	40.9°	6.99	148.8°	11.34

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	7.39	8.77	9.40	9.71	9.87	9.94	10.20
60°	7.99	9.36	9.86	10.11	10.27	10.36	10.70
75°	8.56	9.85	10.36	10.71	10.96	11.15	11.45
90°	8.54	9.90	10.59	11.19	11.59	11.89	12.27
110°	7.64	9.32	10.19	10.88	11.63	12.35	13.56
120°	7.05	8.96	10.15	11.00	11.67	12.27	13.70
135°	6.26	8.06	9.57	10.47	11.43	12.47	14.55
150°	5.19	6.72	8.16	9.33	10.30	11.10	13.10