BIRBA: ORC Rating

GPH

622.1

OSN

603.7

LOA

12.01 m

Displacement

7350 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6637

Medium

0.8923

High

1.0259

Triple Offshore

Low

0.8506

Medium

1.0854

High

1.2055

Boat Specifications

Dimensions

Length overall: 12.01 m
Beam: 3.86 m
Draft: 2.22 m
Displacement: 7350 kg
Crew weight: 631 kg
Wetted surface: 30.41 m²

Sails

Mainsail: 39.43 m²
Genoa: 49.28 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 89.1 m²

Design

Type: RONDO MT12
Builder: BIASI COSNAU
Designer: SCIOMACHEN
Year built: 1995

Performance data

Polar CSV

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

6,42.4,4.956292,52,5.52,60,5.77,75,5.92,90,5.8,110,5.6,120,5.39,135,4.86,143.8,4.399225,150,4.1
8,40.4,5.777779,52,6.42,60,6.62,75,6.73,90,6.71,110,6.66,120,6.51,135,6,147.3,5.347525,150,5.19
10,38.8,6.274556,52,6.91,60,7.05,75,7.14,90,7.22,110,7.24,120,7.15,135,6.81,150,6.12,151.6,6.025133
12,37.5,6.516642,52,7.16,60,7.29,75,7.41,90,7.53,110,7.6,120,7.55,135,7.29,150,6.82,156.9,6.512133
14,36.9,6.640117,52,7.29,60,7.44,75,7.6,90,7.75,110,7.9,120,7.87,135,7.64,150,7.27,169.1,6.711076
16,36.5,6.705174,52,7.37,60,7.53,75,7.75,90,7.92,110,8.17,120,8.17,135,7.95,150,7.59,177.7,7.085708
20,36.2,6.766132,52,7.45,60,7.64,75,7.93,90,8.17,110,8.68,120,8.82,135,8.64,150,8.19,179,7.721176
24,36.7,6.797413,52,7.48,60,7.69,75,8.05,90,8.4,110,9.18,120,9.48,135,9.54,150,8.92,179,8.301264

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.52	5.77	5.92	5.8	5.6	5.39	4.86	4.1
8	6.42	6.62	6.73	6.71	6.66	6.51	6	5.19
10	6.91	7.05	7.14	7.22	7.24	7.15	6.81	6.12
12	7.16	7.29	7.41	7.53	7.6	7.55	7.29	6.82
14	7.29	7.44	7.6	7.75	7.9	7.87	7.64	7.27
16	7.37	7.53	7.75	7.92	8.17	8.17	7.95	7.59
20	7.45	7.64	7.93	8.17	8.68	8.82	8.64	8.19
24	7.48	7.69	8.05	8.4	9.18	9.48	9.54	8.92

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.66	143.8°	3.55
8	40.4°	4.4	147.3°	4.5
10	38.8°	4.89	151.6°	5.3
12	37.5°	5.17	156.9°	5.99
14	36.9°	5.31	169.1°	6.59
16	36.5°	5.39	177.7°	7.08
20	36.2°	5.46	179°	7.72
24	36.7°	5.45	179°	8.3

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°	5.52	6.42	6.91	7.16	7.29	7.37	7.45	7.48
60°	5.77	6.62	7.05	7.29	7.44	7.53	7.64	7.69
75°	5.92	6.73	7.14	7.41	7.60	7.75	7.93	8.05
90°	5.80	6.71	7.22	7.53	7.75	7.92	8.17	8.40
110°	5.60	6.66	7.24	7.60	7.90	8.17	8.68	9.18
120°	5.39	6.51	7.15	7.55	7.87	8.17	8.82	9.48
135°	4.86	6.00	6.81	7.29	7.64	7.95	8.64	9.54
150°	4.10	5.19	6.12	6.82	7.27	7.59	8.19	8.92