ARAOK — ORC Rating | RegattaPages

GPH

746.2

OSN

719.4

LOA

8.491 m

Displacement

2722 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5378

Medium

0.7448

High

0.8827

Triple Offshore

Low

0.6902

Medium

0.9122

High

1.0422

Boat Specifications

Dimensions

Length overall: 8.491 m
Beam: 3.08 m
Draft: 1.6 m
Displacement: 2722 kg
Crew weight: 450 kg
Wetted surface: 16.68 m²

Sails

Mainsail: 16.45 m²
Genoa: 22.7 m²
Spinnaker: 45.37 m²
Asymmetric spinnaker: 0 m²

Design

Type: DUFOUR 28
Builder: DUFOUR
Designer: Faroux
Year built: 1980
Stability index: 129.2

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.

6,44.2,3.891699,52,4.29,60,4.53,75,4.68,90,4.58,110,4.65,120,4.51,135,4.09,147.5,3.604495,150,3.51
8,42.7,4.612781,52,5.13,60,5.36,75,5.51,90,5.54,110,5.63,120,5.5,135,5.07,150,4.49,151.4,4.43061
10,41.7,5.143053,52,5.68,60,5.86,75,6,90,6.12,110,6.2,120,6.12,135,5.82,150,5.3,154.7,5.110153
12,40,5.469657,52,6,60,6.15,75,6.28,90,6.46,110,6.55,120,6.49,135,6.27,150,5.91,161,5.552509
14,38.4,5.66548,52,6.21,60,6.35,75,6.5,90,6.71,110,6.86,120,6.81,135,6.6,150,6.3,174.8,5.813928
16,37.6,5.793336,52,6.36,60,6.51,75,6.69,90,6.91,110,7.16,120,7.11,135,6.9,150,6.61,179,6.190943
20,37.8,5.897577,52,6.5,60,6.71,75,7,90,7.13,110,7.71,120,7.76,135,7.55,150,7.18,179,6.771031

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.29	4.53	4.68	4.58	4.65	4.51	4.09	3.51
8	5.13	5.36	5.51	5.54	5.63	5.5	5.07	4.49
10	5.68	5.86	6	6.12	6.2	6.12	5.82	5.3
12	6	6.15	6.28	6.46	6.55	6.49	6.27	5.91
14	6.21	6.35	6.5	6.71	6.86	6.81	6.6	6.3
16	6.36	6.51	6.69	6.91	7.16	7.11	6.9	6.61
20	6.5	6.71	7	7.13	7.71	7.76	7.55	7.18

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	2.79	147.5°	3.04
8	42.7°	3.39	151.4°	3.89
10	41.7°	3.84	154.7°	4.62
12	40°	4.19	161°	5.25
14	38.4°	4.44	174.8°	5.79
16	37.6°	4.59	179°	6.19
20	37.8°	4.66	179°	6.77

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