ALVA — ORC Rating | RegattaPages

GPH

711.6

OSN

684.7

LOA

11.25 m

Displacement

7474 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6033

Medium

0.8705

High

1.0547

Triple Offshore

Low

0.7856

Medium

1.0886

High

1.2721

Boat Specifications

Dimensions

Length overall: 11.25 m
Beam: 3.91 m
Draft: 1.8 m
Displacement: 7474 kg
Crew weight: 320 kg
Wetted surface: 32.01 m²

Sails

Mainsail: 39.85 m²
Genoa: 29.51 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: ELAN IMPRESS 374
Builder: ELAN YACHTS
Designer: Rob Humphreys
Year built: 2005

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.

6,45,4.143646,52,4.57,60,4.87,75,5.12,90,5.08,110,4.62,120,4.32,135,3.74,150,3.19,170.8,2.846618
8,43.3,4.946599,52,5.5,60,5.82,75,6.1,90,6.07,110,5.67,120,5.35,135,4.78,150,4.18,172,3.756559
10,42.6,5.583503,52,6.26,60,6.61,75,6.88,90,6.87,110,6.55,120,6.21,135,5.62,150,5.03,173.7,4.587705
12,42.6,6.140494,52,6.81,60,7.09,75,7.29,90,7.32,110,7.15,120,6.93,135,6.39,150,5.78,175.2,5.318653
14,42.4,6.459429,52,7.1,60,7.34,75,7.55,90,7.6,110,7.5,120,7.36,135,7,150,6.47,175.8,5.996103
16,42,6.539775,52,7.21,60,7.47,75,7.73,90,7.84,110,7.78,120,7.65,135,7.38,150,7.03,176.7,6.630995
20,42.3,6.570843,52,7.26,60,7.54,75,7.96,90,8.3,110,8.34,120,8.21,135,7.92,150,7.66,178.9,7.461375

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.57	4.87	5.12	5.08	4.62	4.32	3.74	3.19
8	5.5	5.82	6.1	6.07	5.67	5.35	4.78	4.18
10	6.26	6.61	6.88	6.87	6.55	6.21	5.62	5.03
12	6.81	7.09	7.29	7.32	7.15	6.93	6.39	5.78
14	7.1	7.34	7.55	7.6	7.5	7.36	7	6.47
16	7.21	7.47	7.73	7.84	7.78	7.65	7.38	7.03
20	7.26	7.54	7.96	8.3	8.34	8.21	7.92	7.66

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45°	2.93	170.8°	2.81
8	43.3°	3.6	172°	3.72
10	42.6°	4.11	173.7°	4.56
12	42.6°	4.52	175.2°	5.3
14	42.4°	4.77	175.8°	5.98
16	42°	4.86	176.7°	6.62
20	42.3°	4.86	178.9°	7.46

Loading polar chart…