TWEETY — ORC Rating | RegattaPages

GPH

629

OSN

612.5

LOA

30.03 m

Displacement

3835 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6542

Medium

0.8663

High

0.9833

Triple Offshore

Low

0.8459

Medium

1.0696

High

1.2038

Boat Specifications

Dimensions

Length overall: 30.03 m
Beam: 9.2 m
Draft: 4.95 m
Displacement: 3835 kg
Crew weight: 735 kg
Wetted surface: 165.76 m²

Sails

Mainsail: 214.28 m²
Genoa: 333.79 m²
Spinnaker: 633.12 m²
Asymmetric spinnaker: 0 m²

Design

Type: Olson 30
Builder: Olson
Designer: Olson
Year built: 1980
Stability index: 104.9

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.

6,43.8,4.918531,52,5.46,60,5.82,75,6.08,90,6.03,110,5.54,120,5.39,135,4.86,139.6,4.648486,150,4.08
8,42.3,5.84075,52,6.4,60,6.58,75,6.72,90,6.72,110,6.62,120,6.54,135,6.11,147.3,5.335642,150,5.19
10,39.9,6.074311,52,6.68,60,6.88,75,7.13,90,7.18,110,7.22,120,7.16,135,6.82,150,6.2,150.7,6.157768
12,38.8,6.171905,52,6.8,60,7.04,75,7.44,90,7.67,110,7.76,120,7.84,135,7.44,150,6.85,158.8,6.510614
14,38.7,6.25296,52,6.88,60,7.14,75,7.62,90,8.06,110,8.12,120,8.48,135,8.19,150,7.42,171.8,6.668174
16,38.5,6.23556,52,6.91,60,7.21,75,7.74,90,8.3,110,8.46,120,8.98,135,9.07,150,8.1,162.2,7.435964
20,39,6.330857,52,7.02,60,7.34,75,7.87,90,8.59,110,9.36,120,9.87,135,11.08,148.2,10.036561,150,9.85

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.46	5.82	6.08	6.03	5.54	5.39	4.86	4.08
8	6.4	6.58	6.72	6.72	6.62	6.54	6.11	5.19
10	6.68	6.88	7.13	7.18	7.22	7.16	6.82	6.2
12	6.8	7.04	7.44	7.67	7.76	7.84	7.44	6.85
14	6.88	7.14	7.62	8.06	8.12	8.48	8.19	7.42
16	6.91	7.21	7.74	8.3	8.46	8.98	9.07	8.1
20	7.02	7.34	7.87	8.59	9.36	9.87	11.08	9.85

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.55	139.6°	3.54
8	42.3°	4.32	147.3°	4.49
10	39.9°	4.66	150.7°	5.37
12	38.8°	4.81	158.8°	6.07
14	38.7°	4.88	171.8°	6.6
16	38.5°	4.88	162.2°	7.08
20	39°	4.92	148.2°	8.53

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