ALFETA — ORC Rating | RegattaPages

GPH

644.9

OSN

628.3

LOA

8.3 m

Displacement

1822 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6465

Medium

0.8436

High

0.9541

Triple Offshore

Low

0.8284

Medium

1.041

High

1.1681

Boat Specifications

Dimensions

Length overall: 8.3 m
Beam: 2.66 m
Draft: 1.72 m
Displacement: 1822 kg
Crew weight: 460 kg
Wetted surface: 16.8 m²

Sails

Mainsail: 26.2 m²
Genoa: 18.3 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 81.22 m²

Design

Type: RS 280
Builder: UAB Plastolitas
Designer: UAB Plastolitas
Year built: 1998
Stability index: 102

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.

6,43,4.566874,52,5.09,60,5.36,75,5.53,90,5.65,110,5.77,120,5.64,135,5.05,144.2,4.574239,150,4.29
8,40.8,5.336891,52,5.95,60,6.17,75,6.31,90,6.47,110,6.66,120,6.6,135,6.2,147.8,5.518834,150,5.39
10,39,5.77755,52,6.43,60,6.61,75,6.74,90,6.76,110,7.22,120,7.23,135,6.9,149.2,6.298315,150,6.25
12,38.4,5.920682,52,6.61,60,6.83,75,7.11,90,7.14,110,7.58,120,7.83,135,7.52,149.6,6.863659,150,6.84
14,38.8,6.03076,52,6.69,60,6.94,75,7.35,90,7.56,110,7.9,120,8.29,135,8.21,147.1,7.527216,150,7.3
16,39,6.073505,52,6.74,60,7.02,75,7.49,90,7.89,110,8.2,120,8.69,135,9.06,144.3,8.410465,150,7.89
20,40.2,6.12729,52,6.77,60,7.09,75,7.65,90,8.25,110,8.76,120,9.51,135,11.22,141.4,11.362466,150,10.25

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.09	5.36	5.53	5.65	5.77	5.64	5.05	4.29
8	5.95	6.17	6.31	6.47	6.66	6.6	6.2	5.39
10	6.43	6.61	6.74	6.76	7.22	7.23	6.9	6.25
12	6.61	6.83	7.11	7.14	7.58	7.83	7.52	6.84
14	6.69	6.94	7.35	7.56	7.9	8.29	8.21	7.3
16	6.74	7.02	7.49	7.89	8.2	8.69	9.06	7.89
20	6.77	7.09	7.65	8.25	8.76	9.51	11.22	10.25

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.34	144.2°	3.71
8	40.8°	4.04	147.8°	4.67
10	39°	4.49	149.2°	5.41
12	38.4°	4.64	149.6°	5.92
14	38.8°	4.7	147.1°	6.32
16	39°	4.72	144.3°	6.83
20	40.2°	4.68	141.4°	8.88

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