ZIG ZAG — ORC Rating | RegattaPages

GPH

716.8

OSN

696.7

LOA

9.326 m

Displacement

3940 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.579

Medium

0.7733

High

0.8738

Triple Offshore

Low

0.7419

Medium

0.9415

High

1.0324

Boat Specifications

Dimensions

Length overall: 9.326 m
Beam: 3.14 m
Draft: 1.65 m
Displacement: 3940 kg
Crew weight: 350 kg
Wetted surface: 19.37 m²

Sails

Mainsail: 23.59 m²
Genoa: 26.57 m²
Spinnaker: 54.9 m²
Asymmetric spinnaker: 0 m²

Design

Type: Birdie 32
Designer: Jan Becker
Year built: 1980
Stability index: 115.9

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.

6,43,4.211369,52,4.69,60,4.93,75,5.08,90,4.97,110,5.02,120,4.85,135,4.37,146.9,3.831835,150,3.71
8,41.2,4.904209,52,5.47,60,5.68,75,5.83,90,5.86,110,5.94,120,5.82,135,5.34,150,4.71,151.4,4.658405
10,40,5.339116,52,5.91,60,6.07,75,6.21,90,6.3,110,6.41,120,6.35,135,6.05,150,5.54,155,5.329315
12,39.4,5.538778,52,6.12,60,6.27,75,6.43,90,6.53,110,6.7,120,6.66,135,6.46,150,6.13,164,5.700841
14,39.4,5.642307,52,6.21,60,6.38,75,6.58,90,6.65,110,6.94,120,6.92,135,6.77,150,6.49,176.3,6.032574
16,39.4,5.707012,52,6.27,60,6.44,75,6.68,90,6.8,110,7.14,120,7.17,135,7.05,150,6.78,179,6.400975
20,39.6,5.736436,52,6.31,60,6.5,75,6.79,90,7.03,110,7.43,120,7.67,135,7.64,150,7.33,179,6.941057

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.69	4.93	5.08	4.97	5.02	4.85	4.37	3.71
8	5.47	5.68	5.83	5.86	5.94	5.82	5.34	4.71
10	5.91	6.07	6.21	6.3	6.41	6.35	6.05	5.54
12	6.12	6.27	6.43	6.53	6.7	6.66	6.46	6.13
14	6.21	6.38	6.58	6.65	6.94	6.92	6.77	6.49
16	6.27	6.44	6.68	6.8	7.14	7.17	7.05	6.78
20	6.31	6.5	6.79	7.03	7.43	7.67	7.64	7.33

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.08	146.9°	3.21
8	41.2°	3.69	151.4°	4.09
10	40°	4.09	155°	4.83
12	39.4°	4.28	164°	5.48
14	39.4°	4.36	176.3°	6.02
16	39.4°	4.41	179°	6.4
20	39.6°	4.42	179°	6.94

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