ERNA — ORC Rating | RegattaPages

GPH

679.5

OSN

658.7

LOA

12.56 m

Displacement

7252 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5943

Medium

0.8113

High

0.9455

Triple Offshore

Low

0.7662

Medium

High

1.1179

Boat Specifications

Dimensions

Length overall: 12.56 m
Beam: 2.77 m
Draft: 1.85 m
Displacement: 7252 kg
Crew weight: 480 kg
Wetted surface: 28.4 m²

Sails

Mainsail: 40.05 m²
Genoa: 26.84 m²
Spinnaker: 64.27 m²
Asymmetric spinnaker: 0 m²

Design

Type: L6
Builder: VSPS
Year built: 1963
Stability index: 140.4

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.

6,43,4.402794,52,4.89,60,5.13,75,5.29,90,5.18,110,5.16,120,4.97,135,4.43,146,3.87196,150,3.7
8,40.6,5.123333,52,5.75,60,5.99,75,6.15,90,6.16,110,6.21,120,6.03,135,5.45,150,4.75,150.5,4.733697
10,39.6,5.645588,52,6.32,60,6.52,75,6.69,90,6.76,110,6.86,120,6.75,135,6.32,150,5.65,153.8,5.472225
12,39.4,5.939952,52,6.6,60,6.8,75,6.99,90,7.05,110,7.23,120,7.18,135,6.89,150,6.4,159.2,6.022513
14,39,6.086373,52,6.74,60,6.93,75,7.16,90,7.27,110,7.47,120,7.46,135,7.26,150,6.91,171.8,6.324662
16,38.4,6.150364,52,6.82,60,7.01,75,7.26,90,7.42,110,7.65,120,7.7,135,7.55,150,7.26,178.4,6.772641
20,38.2,6.273407,52,6.92,60,7.11,75,7.38,90,7.63,110,7.91,120,8.14,135,8.08,150,7.8,179.3,7.430555

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.89	5.13	5.29	5.18	5.16	4.97	4.43	3.7
8	5.75	5.99	6.15	6.16	6.21	6.03	5.45	4.75
10	6.32	6.52	6.69	6.76	6.86	6.75	6.32	5.65
12	6.6	6.8	6.99	7.05	7.23	7.18	6.89	6.4
14	6.74	6.93	7.16	7.27	7.47	7.46	7.26	6.91
16	6.82	7.01	7.26	7.42	7.65	7.7	7.55	7.26
20	6.92	7.11	7.38	7.63	7.91	8.14	8.08	7.8

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.22	146°	3.21
8	40.6°	3.89	150.5°	4.12
10	39.6°	4.35	153.8°	4.91
12	39.4°	4.59	159.2°	5.63
14	39°	4.73	171.8°	6.26
16	38.4°	4.82	178.4°	6.77
20	38.2°	4.93	179.3°	7.43

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