ALFETA — ORC Rating | RegattaPages

GPH

644.5

OSN

630.4

LOA

8.3 m

Displacement

1823 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6382

Medium

0.8393

High

0.9456

Triple Offshore

Low

0.8276

Medium

1.0422

High

1.1687

Boat Specifications

Dimensions

Length overall: 8.3 m
Beam: 2.66 m
Draft: 1.72 m
Displacement: 1823 kg
Crew weight: 440 kg
Wetted surface: 17.05 m²

Sails

Mainsail: 26.13 m²
Genoa: 17.79 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 79.13 m²

Design

Type: RS 280
Builder: UAB Plastolitas
Designer: UAB Plastolitas
Year built: 1998

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.

6,43.1,4.478457,52,5.03,60,5.34,75,5.66,90,5.97,110,5.87,120,5.72,135,5.05,144,4.573452,150,4.27
8,41.6,5.30892,52,5.94,60,6.18,75,6.45,90,6.68,110,6.7,120,6.63,135,6.24,147.5,5.48974,150,5.35
10,39.8,5.818165,52,6.42,60,6.59,75,6.75,90,7.04,110,7.25,120,7.24,135,6.87,149.2,6.298315,150,6.25
12,39,5.944829,52,6.57,60,6.79,75,7.1,90,7.29,110,7.81,120,7.9,135,7.51,150,6.78,150.5,6.755859
14,39,5.9963,52,6.63,60,6.87,75,7.34,90,7.64,110,8.28,120,8.45,135,8.27,150,7.21,176,6.345457
16,39.4,6.017598,52,6.65,60,6.91,75,7.46,90,8.01,110,8.66,120,9.15,135,9.19,144,8.467066,150,7.91
20,40.8,6.142709,52,6.73,60,7.04,75,7.57,90,8.33,110,9.26,120,10.15,135,11.06,140.1,11.275278,150,9.99

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.03	5.34	5.66	5.97	5.87	5.72	5.05	4.27
8	5.94	6.18	6.45	6.68	6.7	6.63	6.24	5.35
10	6.42	6.59	6.75	7.04	7.25	7.24	6.87	6.25
12	6.57	6.79	7.1	7.29	7.81	7.9	7.51	6.78
14	6.63	6.87	7.34	7.64	8.28	8.45	8.27	7.21
16	6.65	6.91	7.46	8.01	8.66	9.15	9.19	7.91
20	6.73	7.04	7.57	8.33	9.26	10.15	11.06	9.99

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.27	144°	3.7
8	41.6°	3.97	147.5°	4.63
10	39.8°	4.47	149.2°	5.41
12	39°	4.62	150.5°	5.88
14	39°	4.66	176°	6.33
16	39.4°	4.65	144°	6.85
20	40.8°	4.65	140.1°	8.65

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