BIRBA — ORC Rating | RegattaPages

GPH

621.6

OSN

603.5

LOA

12.01 m

Displacement

7350 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6641

Medium

0.8921

High

1.0253

Triple Offshore

Low

0.8518

Medium

1.0858

High

1.2054

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: 30.3 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
Stability index: 117.9

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.

6,42.3,4.948413,52,5.53,60,5.77,75,5.92,90,5.82,110,5.66,120,5.39,135,4.86,144.2,4.376968,150,4.1
8,40.3,5.769218,52,6.42,60,6.62,75,6.73,90,6.78,110,6.69,120,6.5,135,6.01,147.9,5.312104,150,5.2
10,38.8,6.274556,52,6.91,60,7.05,75,7.14,90,7.27,110,7.24,120,7.16,135,6.81,150,6.12,152,6.013947
12,37.6,6.51277,52,7.15,60,7.29,75,7.41,90,7.56,110,7.6,120,7.55,135,7.3,150,6.83,157.7,6.495825
14,37,6.623798,52,7.29,60,7.44,75,7.6,90,7.78,110,7.9,120,7.88,135,7.64,150,7.28,170,6.71197
16,36.6,6.688943,52,7.36,60,7.53,75,7.75,90,7.95,110,8.17,120,8.18,135,7.96,150,7.6,177.2,7.098475
20,36.4,6.758656,52,7.44,60,7.63,75,7.93,90,8.17,110,8.68,120,8.83,135,8.65,150,8.21,179,7.741179

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.53	5.77	5.92	5.82	5.66	5.39	4.86	4.1
8	6.42	6.62	6.73	6.78	6.69	6.5	6.01	5.2
10	6.91	7.05	7.14	7.27	7.24	7.16	6.81	6.12
12	7.15	7.29	7.41	7.56	7.6	7.55	7.3	6.83
14	7.29	7.44	7.6	7.78	7.9	7.88	7.64	7.28
16	7.36	7.53	7.75	7.95	8.17	8.18	7.96	7.6
20	7.44	7.63	7.93	8.17	8.68	8.83	8.65	8.21

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.66	144.2°	3.55
8	40.3°	4.4	147.9°	4.5
10	38.8°	4.89	152°	5.31
12	37.6°	5.16	157.7°	6.01
14	37°	5.29	170°	6.61
16	36.6°	5.37	177.2°	7.09
20	36.4°	5.44	179°	7.74

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