ERNA — ORC Rating | RegattaPages

GPH

681.7

OSN

659.9

LOA

12.56 m

Displacement

7252 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5806

Medium

0.8022

High

0.9505

Triple Offshore

Low

0.7511

Medium

1.0012

High

1.1369

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: 140.1

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.

6,43.2,4.225148,52,4.69,60,4.96,75,5.16,90,5.12,110,5.11,120,4.93,135,4.42,146.6,3.85699,150,3.72
8,41.4,4.945934,52,5.56,60,5.86,75,6.1,90,6.19,110,6.22,120,6.01,135,5.39,150,4.73,152,4.643537
10,41.7,5.625215,52,6.31,60,6.58,75,6.77,90,6.93,110,6.97,120,6.84,135,6.35,150,5.6,153.8,5.4165
12,42,6.122629,52,6.74,60,6.96,75,7.12,90,7.26,110,7.35,120,7.27,135,6.97,150,6.44,155.6,6.182169
14,41.2,6.299716,52,6.94,60,7.15,75,7.34,90,7.4,110,7.65,120,7.57,135,7.34,150,7,165.8,6.488246
16,40.6,6.387704,52,7.04,60,7.25,75,7.5,90,7.61,110,7.9,120,7.87,135,7.64,150,7.34,177.2,6.858188
20,40.9,6.522428,52,7.13,60,7.35,75,7.67,90,7.96,110,8.17,120,8.42,135,8.27,150,7.92,179,7.501142

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.69	4.96	5.16	5.12	5.11	4.93	4.42	3.72
8	5.56	5.86	6.1	6.19	6.22	6.01	5.39	4.73
10	6.31	6.58	6.77	6.93	6.97	6.84	6.35	5.6
12	6.74	6.96	7.12	7.26	7.35	7.27	6.97	6.44
14	6.94	7.15	7.34	7.4	7.65	7.57	7.34	7
16	7.04	7.25	7.5	7.61	7.9	7.87	7.64	7.34
20	7.13	7.35	7.67	7.96	8.17	8.42	8.27	7.92

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.08	146.6°	3.22
8	41.4°	3.71	152°	4.1
10	41.7°	4.2	153.8°	4.86
12	42°	4.55	155.6°	5.63
14	41.2°	4.74	165.8°	6.29
16	40.6°	4.85	177.2°	6.85
20	40.9°	4.93	179°	7.5

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