LOUP ALVAR: ORC Rating

GPH

548.5

OSN

532.2

LOA

12.818 m

Displacement

7727 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7387

Medium

1.0042

High

1.1495

Triple Offshore

Low

0.9546

Medium

1.2363

High

1.387

Boat Specifications

Dimensions

Length overall: 12.818 m
Beam: 3.85 m
Draft: 2.58 m
Displacement: 7727 kg
Crew weight: 840 kg
Wetted surface: 36.7 m²

Sails

Mainsail: 60.58 m²
Genoa: 45.33 m²
Spinnaker: 140.12 m²
Asymmetric spinnaker: 176.27 m²

Design

Type: SLY 42
Builder: SLY Yachts
Designer: Lostuzzi
Year built: 2006
Stability index: 122.8

Performance data

Polar CSV

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

6,43.2,5.226562,52,5.84,60,6.2,75,6.5,90,6.42,110,6.55,120,6.4,135,5.74,143.3,5.238373,150,4.85
8,41.8,6.291282,52,7.05,60,7.38,75,7.61,90,7.71,110,7.85,120,7.75,135,7.2,146,6.392955,150,6.12
10,40.5,7.035715,52,7.78,60,8,75,8.16,90,8.12,110,8.46,120,8.42,135,8.1,148.4,7.384996,150,7.27
12,38.8,7.236912,52,8.03,60,8.25,75,8.5,90,8.5,110,8.83,120,9.02,135,8.67,150,8.05,151.3,7.969025
14,37.8,7.31502,52,8.14,60,8.37,75,8.75,90,8.9,110,9.17,120,9.53,135,9.34,150,8.5,162.8,7.882519
16,37.8,7.454234,52,8.2,60,8.44,75,8.89,90,9.27,110,9.49,120,9.94,135,10.12,150,8.95,175.4,8.106111
20,37.5,7.613253,52,8.37,60,8.64,75,9.03,90,9.7,110,10.09,120,10.77,135,11.93,150,10.24,173.6,9.126879

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.84	6.2	6.5	6.42	6.55	6.4	5.74	4.85
8	7.05	7.38	7.61	7.71	7.85	7.75	7.2	6.12
10	7.78	8	8.16	8.12	8.46	8.42	8.1	7.27
12	8.03	8.25	8.5	8.5	8.83	9.02	8.67	8.05
14	8.14	8.37	8.75	8.9	9.17	9.53	9.34	8.5
16	8.2	8.44	8.89	9.27	9.49	9.94	10.12	8.95
20	8.37	8.64	9.03	9.7	10.09	10.77	11.93	10.24

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.81	143.3°	4.2
8	41.8°	4.69	146°	5.3
10	40.5°	5.35	148.4°	6.29
12	38.8°	5.64	151.3°	6.99
14	37.8°	5.78	162.8°	7.53
16	37.8°	5.89	175.4°	8.08
20	37.5°	6.04	173.6°	9.07

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°	5.84	7.05	7.78	8.03	8.14	8.20	8.37
60°	6.20	7.38	8.00	8.25	8.37	8.44	8.64
75°	6.50	7.61	8.16	8.50	8.75	8.89	9.03
90°	6.42	7.71	8.12	8.50	8.90	9.27	9.70
110°	6.55	7.85	8.46	8.83	9.17	9.49	10.09
120°	6.40	7.75	8.42	9.02	9.53	9.94	10.77
135°	5.74	7.20	8.10	8.67	9.34	10.12	11.93
150°	4.85	6.12	7.27	8.05	8.50	8.95	10.24