ATILA — ORC Rating | RegattaPages

GPH

665.6

OSN

650.1

LOA

8 m

Displacement

1465 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6281

Medium

0.8166

High

0.9176

Triple Offshore

Low

0.8074

Medium

1.0065

High

1.1245

Boat Specifications

Dimensions

Length overall: 8 m
Beam: 2.49 m
Draft: 1.5 m
Displacement: 1465 kg
Crew weight: 340 kg
Wetted surface: 13.53 m²

Sails

Mainsail: 21.3 m²
Genoa: 13.7 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 64.31 m²

Design

Type: J 80
Builder: J COMPOSITE
Designer: JOHNSTONE
Year built: 1993

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.

6,42.8,4.361278,52,4.91,60,5.2,75,5.43,90,5.57,110,5.7,120,5.57,135,4.98,145,4.468035,150,4.23
8,42,5.207599,52,5.79,60,6.01,75,6.16,90,6.32,110,6.48,120,6.43,135,6.08,148,5.412429,150,5.3
10,39.8,5.648956,52,6.21,60,6.36,75,6.51,90,6.56,110,6.99,120,7,135,6.68,150,6.119913
12,39.4,5.7976,52,6.35,60,6.55,75,6.82,90,6.91,110,7.35,120,7.59,135,7.28,150,6.6,150.5,6.572026
14,39.4,5.836423,52,6.41,60,6.64,75,7.06,90,7.3,110,7.65,120,8.06,135,7.97,150,7.01,176,6.185067
16,39.4,5.862305,52,6.43,60,6.68,75,7.19,90,7.64,110,7.97,120,8.47,135,8.82,144.2,8.137461,150,7.62
20,40.1,5.909104,52,6.5,60,6.81,75,7.28,90,8,110,8.6,120,9.28,135,10.76,140.8,10.85239,150,9.71

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.91	5.2	5.43	5.57	5.7	5.57	4.98	4.23
8	5.79	6.01	6.16	6.32	6.48	6.43	6.08	5.3
10	6.21	6.36	6.51	6.56	6.99	7	6.68	6.12
12	6.35	6.55	6.82	6.91	7.35	7.59	7.28	6.6
14	6.41	6.64	7.06	7.3	7.65	8.06	7.97	7.01
16	6.43	6.68	7.19	7.64	7.97	8.47	8.82	7.62
20	6.5	6.81	7.28	8	8.6	9.28	10.76	9.71

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.2	145°	3.66
8	42°	3.87	148°	4.59
10	39.8°	4.34	150°	5.3
12	39.4°	4.48	150.5°	5.72
14	39.4°	4.51	176°	6.17
16	39.4°	4.53	144.2°	6.6
20	40.1°	4.52	140.8°	8.41

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