AURORA — ORC Rating | RegattaPages

GPH

730

OSN

711.2

LOA

8.56 m

Displacement

3100 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5704

Medium

0.7586

High

0.8592

Triple Offshore

Low

0.7289

Medium

0.9223

High

1.0188

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: 15.76 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

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.

6,42,4.050355,52,4.54,60,4.78,75,4.96,90,4.9,110,4.89,120,4.74,135,4.36,148.5,3.835147,150,3.77
8,41.6,4.720526,52,5.33,60,5.58,75,5.72,90,5.7,110,5.82,120,5.72,135,5.31,150,4.67,152,4.586909
10,41.8,5.298628,52,5.78,60,5.94,75,6.05,90,6.13,110,6.24,120,6.19,135,5.98,150,5.49,152,5.402359
12,40.1,5.503833,52,6,60,6.13,75,6.26,90,6.37,110,6.54,120,6.5,135,6.31,150,6.03,168,5.530863
14,39.8,5.609908,52,6.11,60,6.26,75,6.43,90,6.5,110,6.83,120,6.82,135,6.61,150,6.32,180,5.92
16,39.4,5.642307,52,6.16,60,6.34,75,6.58,90,6.69,110,7.07,120,7.13,135,6.94,150,6.6,180,6.24
20,39.9,5.670226,52,6.19,60,6.4,75,6.77,90,7.03,110,7.32,120,7.57,135,7.55,150,7.19,180,6.78

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.54	4.78	4.96	4.9	4.89	4.74	4.36	3.77
8	5.33	5.58	5.72	5.7	5.82	5.72	5.31	4.67
10	5.78	5.94	6.05	6.13	6.24	6.19	5.98	5.49
12	6	6.13	6.26	6.37	6.54	6.5	6.31	6.03
14	6.11	6.26	6.43	6.5	6.83	6.82	6.61	6.32
16	6.16	6.34	6.58	6.69	7.07	7.13	6.94	6.6
20	6.19	6.4	6.77	7.03	7.32	7.57	7.55	7.19

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.01	148.5°	3.27
8	41.6°	3.53	152°	4.05
10	41.8°	3.95	152°	4.77
12	40.1°	4.21	168°	5.41
14	39.8°	4.31	180°	5.92
16	39.4°	4.36	180°	6.24
20	39.9°	4.35	180°	6.78

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