NUBA II: ORC Rating

GPH

570.9

OSN

555

LOA

13.295 m

Displacement

7139 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7253

Medium

0.9694

High

1.1098

Triple Offshore

Low

0.9311

Medium

1.1803

High

1.3101

Boat Specifications

Dimensions

Length overall: 13.295 m
Beam: 4.19 m
Draft: 2.63 m
Displacement: 7139 kg
Crew weight: 600 kg
Wetted surface: 32.17 m²

Sails

Mainsail: 53.96 m²
Genoa: 53.86 m²
Spinnaker: 121.64 m²
Asymmetric spinnaker: 0 m²

Design

Type: PROTOTIPO TWO TON
Builder: BIANCA
Designer: JOUBERT/NIVELT
Year built: 1985

Performance data

Polar CSV

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

6,42.1,5.471876,52,6.1,60,6.38,75,6.56,90,6.44,110,6.05,120,5.88,135,5.28,140.6,4.95643,150,4.42
8,39.9,6.348046,52,7.06,60,7.26,75,7.38,90,7.33,110,7.23,120,7.11,135,6.56,146.7,5.802773,150,5.6
10,37.8,6.783479,52,7.52,60,7.68,75,7.81,90,7.81,110,7.87,120,7.8,135,7.44,149.9,6.657794,150,6.65
12,36.7,6.959553,52,7.72,60,7.89,75,8.08,90,8.14,110,8.27,120,8.25,135,7.98,150,7.45,156.3,7.142369
14,36.2,7.075937,52,7.82,60,8,75,8.25,90,8.4,110,8.59,120,8.66,135,8.42,150,7.96,164.4,7.423461
16,35.8,7.126443,52,7.89,60,8.08,75,8.37,90,8.62,110,8.85,120,9.05,135,8.86,150,8.38,176.3,7.706062
20,35.6,7.219277,52,7.98,60,8.2,75,8.57,90,8.94,110,9.27,120,9.77,135,9.91,150,9.28,178.1,8.504676
24,36.1,7.264942,52,8.02,60,8.25,75,8.7,90,9.22,110,9.67,120,10.43,135,11.81,150,10.55,176.8,9.364602

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.1	6.38	6.56	6.44	6.05	5.88	5.28	4.42
8	7.06	7.26	7.38	7.33	7.23	7.11	6.56	5.6
10	7.52	7.68	7.81	7.81	7.87	7.8	7.44	6.65
12	7.72	7.89	8.08	8.14	8.27	8.25	7.98	7.45
14	7.82	8	8.25	8.4	8.59	8.66	8.42	7.96
16	7.89	8.08	8.37	8.62	8.85	9.05	8.86	8.38
20	7.98	8.2	8.57	8.94	9.27	9.77	9.91	9.28
24	8.02	8.25	8.7	9.22	9.67	10.43	11.81	10.55

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.1°	4.06	140.6°	3.83
8	39.9°	4.87	146.7°	4.85
10	37.8°	5.36	149.9°	5.76
12	36.7°	5.58	156.3°	6.54
14	36.2°	5.71	164.4°	7.15
16	35.8°	5.78	176.3°	7.69
20	35.6°	5.87	178.1°	8.5
24	36.1°	5.87	176.8°	9.35

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 kt24 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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	6.10	7.06	7.52	7.72	7.82	7.89	7.98	8.02
60°	6.38	7.26	7.68	7.89	8.00	8.08	8.20	8.25
75°	6.56	7.38	7.81	8.08	8.25	8.37	8.57	8.70
90°	6.44	7.33	7.81	8.14	8.40	8.62	8.94	9.22
110°	6.05	7.23	7.87	8.27	8.59	8.85	9.27	9.67
120°	5.88	7.11	7.80	8.25	8.66	9.05	9.77	10.43
135°	5.28	6.56	7.44	7.98	8.42	8.86	9.91	11.81
150°	4.42	5.60	6.65	7.45	7.96	8.38	9.28	10.55