Roaring Again — ORC Rating

GPH

522.9

OSN

513.6

LOA

12.2 m

Displacement

4350 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.9082

Medium

1.1577

High

1.3198

Triple Offshore

Low

1.1705

Medium

1.43

High

1.6066

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.

6,41.5,6.021718,52,6.82,60,7.2,75,7.47,90,7.39,110,6.98,120,6.73,135,6,142,5.507539,150,5.01
8,39.4,6.755239,52,7.6,60,7.87,75,8.12,90,8.13,110,8.03,120,7.97,135,7.47,143.4,6.850872,150,6.35
10,38,7.017671,52,7.85,60,8.1,75,8.48,90,8.68,110,8.48,120,8.66,135,8.25,150,7.459365
12,37.1,7.134045,52,7.98,60,8.24,75,8.73,90,9.15,110,8.97,120,9.17,135,9.06,150,8.22,152.4,8.011703
14,36.4,7.280464,52,8.08,60,8.31,75,8.89,90,9.45,110,9.61,120,9.67,135,10,149,8.924745,150,8.84
16,36.3,7.370383,52,8.2,60,8.49,75,9,90,9.66,110,10.27,120,10.35,135,10.95,146.5,10.061329,150,9.69
20,36.3,7.469647,52,8.31,60,8.65,75,9.35,90,9.89,110,11.25,120,11.53,135,12.27,146.4,11.645759,150,11.2

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.82	7.2	7.47	7.39	6.98	6.73	6	5.01
8	7.6	7.87	8.12	8.13	8.03	7.97	7.47	6.35
10	7.85	8.1	8.48	8.68	8.48	8.66	8.25	7.46
12	7.98	8.24	8.73	9.15	8.97	9.17	9.06	8.22
14	8.08	8.31	8.89	9.45	9.61	9.67	10	8.84
16	8.2	8.49	9	9.66	10.27	10.35	10.95	9.69
20	8.31	8.65	9.35	9.89	11.25	11.53	12.27	11.2

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.5°	4.51	142°	4.34
8	39.4°	5.22	143.4°	5.5
10	38°	5.53	150°	6.46
12	37.1°	5.69	152.4°	7.1
14	36.4°	5.86	149°	7.65
16	36.3°	5.94	146.5°	8.39
20	36.3°	6.02	146.4°	9.7

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