BLUEBIRD — ORC Rating

GPH

739.5

OSN

716.9

LOA

9.4 m

Displacement

4020 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5417

Medium

0.7411

High

0.8715

Triple Offshore

Low

0.6995

Medium

0.9192

High

1.0408

Boat Specifications

Dimensions

Length overall: 9.4 m
Beam: 3.14 m
Draft: 1.66 m
Displacement: 4020 kg
Crew weight: 450 kg
Wetted surface: 19.59 m²

Sails

Mainsail: 21.95 m²
Genoa: 22.37 m²
Spinnaker: 52.38 m²
Asymmetric spinnaker: 49.43 m²

Design

Type: BIRDIE 32
Designer: Jan Becker
Year built: 1978
Stability index: 110.7

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.

6,44.2,3.835904,52,4.25,60,4.5,75,4.67,90,4.82,110,4.84,120,4.68,135,4.27,146.6,3.809077,150,3.68
8,42.4,4.482329,52,5.03,60,5.31,75,5.52,90,5.82,110,5.86,120,5.69,135,5.22,150,4.58,152.3,4.495176
10,42.3,5.056575,52,5.65,60,5.91,75,6.09,90,6.36,110,6.41,120,6.32,135,6.03,150,5.39,153.8,5.227034
12,42,5.517094,52,6.05,60,6.23,75,6.38,90,6.66,110,6.74,120,6.67,135,6.46,150,6.07,159.2,5.744387
14,40.9,5.715393,52,6.25,60,6.42,75,6.58,90,6.88,110,7.04,120,6.99,135,6.77,150,6.46,173.6,5.977251
16,40.6,5.821371,52,6.36,60,6.54,75,6.74,90,7.03,110,7.33,120,7.31,135,7.08,150,6.75,179,6.360969
20,40.8,5.865296,52,6.41,60,6.62,75,6.97,90,7.21,110,7.75,120,7.87,135,7.68,150,7.33,179,6.911053

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.25	4.5	4.67	4.82	4.84	4.68	4.27	3.68
8	5.03	5.31	5.52	5.82	5.86	5.69	5.22	4.58
10	5.65	5.91	6.09	6.36	6.41	6.32	6.03	5.39
12	6.05	6.23	6.38	6.66	6.74	6.67	6.46	6.07
14	6.25	6.42	6.58	6.88	7.04	6.99	6.77	6.46
16	6.36	6.54	6.74	7.03	7.33	7.31	7.08	6.75
20	6.41	6.62	6.97	7.21	7.75	7.87	7.68	7.33

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	2.75	146.6°	3.18
8	42.4°	3.31	152.3°	3.98
10	42.3°	3.74	153.8°	4.69
12	42°	4.1	159.2°	5.37
14	40.9°	4.32	173.6°	5.94
16	40.6°	4.42	179°	6.36
20	40.8°	4.44	179°	6.91

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