La Strega Bianca: ORC Rating

GPH

492.5

OSN

486.3

LOA

13.28 m

Displacement

2641 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.9315

Medium

1.1917

High

1.3894

Triple Offshore

Low

1.2269

Medium

1.5241

High

1.7335

Boat Specifications

Dimensions

Length overall: 13.28 m
Beam: 3.46 m
Draft: 2.28 m
Displacement: 2641 kg
Crew weight: 852 kg
Wetted surface: 27.13 m²

Sails

Mainsail: 59.54 m²
Genoa: 42.34 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 113.8 m²

Design

Type: BB 13.5
Builder: Boerresen
Designer: Boerresen Anders
Year built: 2004

Performance data

Polar CSV

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

6,43.9,6.467272,52,7.22,60,7.73,75,8.16,90,8.15,110,7.47,120,7.16,135,6.2,139.2,5.825666,150,5.09
8,41.7,7.071698,52,7.93,60,8.31,75,8.83,90,9.21,110,8.79,120,8.65,135,7.96,139.7,7.526207,150,6.63
10,40.8,7.35804,52,8.22,60,8.59,75,9.24,90,9.82,110,9.7,120,9.85,135,9.06,144.7,8.258411,150,7.78
12,40.3,7.486872,52,8.36,60,8.77,75,9.52,90,10.23,110,10.79,120,10.63,135,10.36,150,8.86,150.4,8.752207
14,40.8,7.556192,52,8.39,60,8.83,75,9.7,90,10.53,110,11.51,120,11.51,135,11.86,141.3,11.006747,150,9.92
16,40.8,7.701503,52,8.55,60,9.01,75,9.78,90,10.73,110,12.02,120,12.48,135,13.03,140.5,12.843033,150,11.44
20,41.7,7.741367,52,8.57,60,9.13,75,10.17,90,11.06,110,12.58,120,13.57,135,14.85,145.7,15.131371,150,14.44

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.22	7.73	8.16	8.15	7.47	7.16	6.2	5.09
8	7.93	8.31	8.83	9.21	8.79	8.65	7.96	6.63
10	8.22	8.59	9.24	9.82	9.7	9.85	9.06	7.78
12	8.36	8.77	9.52	10.23	10.79	10.63	10.36	8.86
14	8.39	8.83	9.7	10.53	11.51	11.51	11.86	9.92
16	8.55	9.01	9.78	10.73	12.02	12.48	13.03	11.44
20	8.57	9.13	10.17	11.06	12.58	13.57	14.85	14.44

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	4.66	139.2°	4.41
8	41.7°	5.28	139.7°	5.74
10	40.8°	5.57	144.7°	6.74
12	40.3°	5.71	150.4°	7.61
14	40.8°	5.72	141.3°	8.59
16	40.8°	5.83	140.5°	9.91
20	41.7°	5.78	145.7°	12.5

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°	7.22	7.93	8.22	8.36	8.39	8.55	8.57
60°	7.73	8.31	8.59	8.77	8.83	9.01	9.13
75°	8.16	8.83	9.24	9.52	9.70	9.78	10.17
90°	8.15	9.21	9.82	10.23	10.53	10.73	11.06
110°	7.47	8.79	9.70	10.79	11.51	12.02	12.58
120°	7.16	8.65	9.85	10.63	11.51	12.48	13.57
135°	6.20	7.96	9.06	10.36	11.86	13.03	14.85
150°	5.09	6.63	7.78	8.86	9.92	11.44	14.44