AURORA — ORC Rating | RegattaPages

GPH

731.6

OSN

709.9

LOA

8.56 m

Displacement

3100 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5667

Medium

0.7615

High

0.8717

Triple Offshore

Low

0.7225

Medium

0.9226

High

1.0243

Boat Specifications

Dimensions

Length overall: 8.56 m
Beam: 2.92 m
Draft: 1.56 m
Displacement: 3100 kg
Crew weight: 500 kg
Wetted surface: 15.95 m²

Sails

Mainsail: 16.13 m²
Genoa: 28.68 m²
Spinnaker: 58.46 m²
Asymmetric spinnaker: 0 m²

Design

Type: COMPIS 28
Builder: Karlstad
Year built: 1968
Stability index: 112.6

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.

6,42,4.023442,52,4.49,60,4.72,75,4.88,90,4.81,110,4.83,120,4.69,135,4.31,148.4,3.804036,150,3.74
8,41.2,4.67827,52,5.29,60,5.54,75,5.67,90,5.66,110,5.78,120,5.68,135,5.25,150,4.64,152.3,4.551648
10,41.4,5.29255,52,5.78,60,5.92,75,6.03,90,6.12,110,6.22,120,6.16,135,5.95,150,5.47,152,5.368382
12,39.3,5.530858,52,6.01,60,6.13,75,6.24,90,6.36,110,6.51,120,6.47,135,6.29,150,6.01,161.9,5.670606
14,38.5,5.622226,52,6.14,60,6.27,75,6.41,90,6.5,110,6.8,120,6.78,135,6.59,150,6.32,176.6,5.890368
16,38.1,5.680266,52,6.2,60,6.37,75,6.57,90,6.67,110,7.05,120,7.09,135,6.91,150,6.59,179,6.200944
20,38.1,5.731096,52,6.26,60,6.46,75,6.79,90,7.01,110,7.31,120,7.55,135,7.52,150,7.18,179,6.731025

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.49	4.72	4.88	4.81	4.83	4.69	4.31	3.74
8	5.29	5.54	5.67	5.66	5.78	5.68	5.25	4.64
10	5.78	5.92	6.03	6.12	6.22	6.16	5.95	5.47
12	6.01	6.13	6.24	6.36	6.51	6.47	6.29	6.01
14	6.14	6.27	6.41	6.5	6.8	6.78	6.59	6.32
16	6.2	6.37	6.57	6.67	7.05	7.09	6.91	6.59
20	6.26	6.46	6.79	7.01	7.31	7.55	7.52	7.18

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	2.99	148.4°	3.24
8	41.2°	3.52	152.3°	4.03
10	41.4°	3.97	152°	4.74
12	39.3°	4.28	161.9°	5.39
14	38.5°	4.4	176.6°	5.88
16	38.1°	4.47	179°	6.2
20	38.1°	4.51	179°	6.73

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