Roaring Again — ORC Rating

GPH

528.7

OSN

520.2

LOA

12.2 m

Displacement

4350 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.899

Medium

1.1407

High

1.3006

Triple Offshore

Low

1.16

Medium

1.4138

High

1.5846

Boat Specifications

Dimensions

Length overall: 12.2 m
Beam: 3.94 m
Draft: 3.47 m
Displacement: 4350 kg
Crew weight: 180 kg
Wetted surface: 30.2 m²

Sails

Mainsail: 65.88 m²
Genoa: 41.22 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 130.89 m²

Design

Type: Lutra 40 Open
Builder: 't Herent marineBV
Designer: A.C. Konijnendijk
Year built: 2006

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.

6,41.7,5.919869,52,6.71,60,7.11,75,7.4,90,7.32,110,6.93,120,6.69,135,5.99,142.2,5.492593,150,5.01
8,39.9,6.660886,52,7.52,60,7.81,75,8.07,90,8.09,110,8.01,120,7.94,135,7.45,143.6,6.820776,150,6.34
10,39,6.948502,52,7.77,60,8.03,75,8.42,90,8.62,110,8.45,120,8.64,135,8.24,150,7.447818
12,38.2,7.04963,52,7.89,60,8.15,75,8.63,90,9.08,110,8.92,120,9.14,135,9.04,150,8.21,152.4,8.011703
14,37.7,7.178755,52,7.97,60,8.21,75,8.77,90,9.36,110,9.55,120,9.64,135,9.98,149.1,8.915409,150,8.83
16,37.6,7.232204,52,8.07,60,8.36,75,8.87,90,9.55,110,10.2,120,10.3,135,10.92,146.6,10.037757,150,9.68
20,38.6,7.357453,52,8.13,60,8.46,75,9.17,90,9.74,110,11.13,120,11.41,135,12.22,145.1,12.631807,150,11.96

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.71	7.11	7.4	7.32	6.93	6.69	5.99	5.01
8	7.52	7.81	8.07	8.09	8.01	7.94	7.45	6.34
10	7.77	8.03	8.42	8.62	8.45	8.64	8.24	7.45
12	7.89	8.15	8.63	9.08	8.92	9.14	9.04	8.21
14	7.97	8.21	8.77	9.36	9.55	9.64	9.98	8.83
16	8.07	8.36	8.87	9.55	10.2	10.3	10.92	9.68
20	8.13	8.46	9.17	9.74	11.13	11.41	12.22	11.96

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.7°	4.42	142.2°	4.34
8	39.9°	5.11	143.6°	5.49
10	39°	5.4	150°	6.45
12	38.2°	5.54	152.4°	7.1
14	37.7°	5.68	149.1°	7.65
16	37.6°	5.73	146.6°	8.38
20	38.6°	5.75	145.1°	10.36

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