ALTER EGO III — ORC Rating

GPH

604.3

OSN

587.6

LOA

13.015 m

Displacement

7870 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6566

Medium

0.9011

High

1.0369

Triple Offshore

Low

0.8565

Medium

1.1267

High

1.2641

Boat Specifications

Dimensions

Length overall: 13.015 m
Beam: 3.99 m
Draft: 1.91 m
Displacement: 7870 kg
Crew weight: 800 kg
Wetted surface: 33.59 m²

Sails

Mainsail: 42.1 m²
Genoa: 60.85 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 116.04 m²

Design

Type: ELAN 43
Builder: ELAN
Designer: JAKOPIN
Year built: 1988

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.

6,44.2,4.86811,52,5.4,60,5.78,75,6.11,90,6.07,110,5.72,120,5.55,135,4.95,144,4.474566,150,4.18
8,43.1,5.820624,52,6.49,60,6.86,75,7.14,90,7.14,110,7.01,120,6.83,135,6.19,147.5,5.45417,150,5.31
10,42.4,6.567763,52,7.24,60,7.48,75,7.66,90,7.7,110,7.75,120,7.64,135,7.22,147,6.522227,150,6.32
12,41.2,6.91108,52,7.57,60,7.77,75,7.96,90,8.03,110,8.18,120,8.1,135,7.81,148.5,7.248075,150,7.14
14,40.5,7.062017,52,7.71,60,7.92,75,8.19,90,8.32,110,8.59,120,8.53,135,8.22,150,7.62,150.2,7.605742
16,39.8,7.106751,52,7.78,60,8.01,75,8.36,90,8.59,110,8.97,120,9,135,8.65,150,7.95,170.5,7.229143
20,40.1,7.151062,52,7.83,60,8.08,75,8.54,90,9.03,110,9.47,120,9.86,135,9.6,150,8.58,178,7.94484

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.4	5.78	6.11	6.07	5.72	5.55	4.95	4.18
8	6.49	6.86	7.14	7.14	7.01	6.83	6.19	5.31
10	7.24	7.48	7.66	7.7	7.75	7.64	7.22	6.32
12	7.57	7.77	7.96	8.03	8.18	8.1	7.81	7.14
14	7.71	7.92	8.19	8.32	8.59	8.53	8.22	7.62
16	7.78	8.01	8.36	8.59	8.97	9	8.65	7.95
20	7.83	8.08	8.54	9.03	9.47	9.86	9.6	8.58

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	3.49	144°	3.62
8	43.1°	4.25	147.5°	4.6
10	42.4°	4.85	147°	5.47
12	41.2°	5.2	148.5°	6.18
14	40.5°	5.37	150.2°	6.6
16	39.8°	5.46	170.5°	7.13
20	40.1°	5.47	178°	7.94

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