LUTRA — ORC Rating | RegattaPages

GPH

717.4

OSN

690.5

LOA

11.9 m

Displacement

9786 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6108

Medium

0.8705

High

1.0577

Triple Offshore

Low

0.7877

Medium

1.0745

High

1.2538

Boat Specifications

Dimensions

Length overall: 11.9 m
Beam: 3.6 m
Draft: 2.36 m
Displacement: 9786 kg
Crew weight: 664 kg
Wetted surface: 29.08 m²

Sails

Mainsail: 36.51 m²
Genoa: 36.36 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: KOOPMANNS 38
Builder: FOMER/WILHELMINA
Designer: KOOPMANNS
Year built: 1993

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.

6,43.1,4.108676,52,4.58,60,4.82,75,5.01,90,4.94,110,4.65,120,4.38,135,3.82,150,3.25,174,2.855644
8,41.1,4.843654,52,5.42,60,5.67,75,5.88,90,5.8,110,5.57,120,5.29,135,4.79,150,4.21,175.8,3.750071
10,40.3,5.402086,52,6.13,60,6.42,75,6.63,90,6.58,110,6.38,120,6.07,135,5.54,150,5,178.1,4.552503
12,40.6,5.979417,52,6.67,60,6.88,75,7.03,90,7.01,110,6.92,120,6.73,135,6.24,150,5.67,179,5.240798
14,40.4,6.342426,52,6.94,60,7.12,75,7.26,90,7.27,110,7.22,120,7.1,135,6.8,150,6.32,179.1,5.870724
16,40.2,6.49388,52,7.09,60,7.27,75,7.43,90,7.49,110,7.45,120,7.35,135,7.13,150,6.82,179.4,6.470355
20,39.7,6.537566,52,7.18,60,7.39,75,7.69,90,7.81,110,7.89,120,7.79,135,7.57,150,7.36,179.8,7.200044

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.58	4.82	5.01	4.94	4.65	4.38	3.82	3.25
8	5.42	5.67	5.88	5.8	5.57	5.29	4.79	4.21
10	6.13	6.42	6.63	6.58	6.38	6.07	5.54	5
12	6.67	6.88	7.03	7.01	6.92	6.73	6.24	5.67
14	6.94	7.12	7.26	7.27	7.22	7.1	6.8	6.32
16	7.09	7.27	7.43	7.49	7.45	7.35	7.13	6.82
20	7.18	7.39	7.69	7.81	7.89	7.79	7.57	7.36

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3	174°	2.84
8	41.1°	3.65	175.8°	3.74
10	40.3°	4.12	178.1°	4.55
12	40.6°	4.54	179°	5.24
14	40.4°	4.83	179.1°	5.87
16	40.2°	4.96	179.4°	6.47
20	39.7°	5.03	179.8°	7.2

Loading polar chart…