Alesta Yelken: ORC Rating

GPH

675.2

OSN

655.8

LOA

7.515 m

Displacement

1257 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6143

Medium

0.8177

High

0.9197

Triple Offshore

Low

0.7882

Medium

0.9951

High

1.1232

Boat Specifications

Dimensions

Length overall: 7.515 m
Beam: 2.58 m
Draft: 1.6 m
Displacement: 1257 kg
Crew weight: 370 kg
Wetted surface: 12.02 m²

Sails

Mainsail: 18.07 m²
Genoa: 12.13 m²
Spinnaker: 44.07 m²
Asymmetric spinnaker: 0 m²

Design

Type: PLATU 25 OD
Builder: BENETEAU
Designer: FARR
Year built: 1997

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,42,4.279112,52,4.83,60,5.1,75,5.29,90,5.43,110,5.48,120,5.34,135,4.83,145,4.284919,150,4.05
8,42.3,5.218818,52,5.73,60,5.91,75,6.02,90,6.19,110,6.27,120,6.18,135,5.85,149,5.144853,150,5.09
10,39,5.558801,52,6.1,60,6.24,75,6.38,90,6.55,110,6.8,120,6.71,135,6.36,150,5.9,155,5.704464
12,37.5,5.722545,52,6.29,60,6.46,75,6.68,90,6.78,110,7.34,120,7.34,135,6.87,150,6.39,172,5.836803
14,37.1,5.75488,52,6.37,60,6.61,75,6.99,90,7.14,110,7.74,120,8.01,135,7.48,150,6.86,180,6.27
16,37.5,5.785568,52,6.4,60,6.67,75,7.2,90,7.54,110,8.09,120,8.6,135,8.23,150,7.41,180,6.68
20,38.1,5.845464,52,6.47,60,6.74,75,7.33,90,8.1,110,8.77,120,9.49,135,10.53,150,8.99,180,7.71

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.83	5.1	5.29	5.43	5.48	5.34	4.83	4.05
8	5.73	5.91	6.02	6.19	6.27	6.18	5.85	5.09
10	6.1	6.24	6.38	6.55	6.8	6.71	6.36	5.9
12	6.29	6.46	6.68	6.78	7.34	7.34	6.87	6.39
14	6.37	6.61	6.99	7.14	7.74	8.01	7.48	6.86
16	6.4	6.67	7.2	7.54	8.09	8.6	8.23	7.41
20	6.47	6.74	7.33	8.1	8.77	9.49	10.53	8.99

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.18	145°	3.51
8	42.3°	3.86	149°	4.41
10	39°	4.32	155°	5.17
12	37.5°	4.54	172°	5.78
14	37.1°	4.59	180°	6.27
16	37.5°	4.59	180°	6.68
20	38.1°	4.6	180°	7.71

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.83	5.73	6.10	6.29	6.37	6.40	6.47
60°	5.10	5.91	6.24	6.46	6.61	6.67	6.74
75°	5.29	6.02	6.38	6.68	6.99	7.20	7.33
90°	5.43	6.19	6.55	6.78	7.14	7.54	8.10
110°	5.48	6.27	6.80	7.34	7.74	8.09	8.77
120°	5.34	6.18	6.71	7.34	8.01	8.60	9.49
135°	4.83	5.85	6.36	6.87	7.48	8.23	10.53
150°	4.05	5.09	5.90	6.39	6.86	7.41	8.99