BIERKAAI — ORC Rating

GPH

578.3

OSN

561.4

LOA

12.201 m

Displacement

5333 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7062

Medium

0.9527

High

1.0979

Triple Offshore

Low

0.9103

Medium

1.1695

High

1.31

Boat Specifications

Dimensions

Length overall: 12.201 m
Beam: 3.7 m
Draft: 2.62 m
Displacement: 5333 kg
Crew weight: 640 kg
Wetted surface: 29.11 m²

Sails

Mainsail: 49.16 m²
Genoa: 31.5 m²
Spinnaker: 98.96 m²
Asymmetric spinnaker: 0 m²

Design

Type: Lutra 40
Builder: Kesteloo
Designer: Lutra Lutra
Year built: 1992

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.

6,42.1,5.242758,52,5.86,60,6.14,75,6.33,90,6.19,110,6.08,120,5.88,135,5.22,139.8,4.92278,150,4.35
8,40,6.161522,52,6.88,60,7.11,75,7.26,90,7.2,110,7.29,120,7.14,135,6.53,145.8,5.779364,150,5.52
10,38.2,6.629706,52,7.4,60,7.59,75,7.75,90,7.76,110,7.94,120,7.86,135,7.44,149.6,6.620185,150,6.59
12,37.2,6.829624,52,7.62,60,7.83,75,8.05,90,8.13,110,8.37,120,8.37,135,8.03,150,7.43,155.6,7.148476
14,37.1,6.971053,52,7.74,60,7.96,75,8.26,90,8.43,110,8.71,120,8.83,135,8.54,150,7.99,163.7,7.449428
16,36.8,7.056049,52,7.83,60,8.05,75,8.4,90,8.68,110,8.96,120,9.27,135,9.07,150,8.48,175.4,7.734915
20,36.7,7.15911,52,7.93,60,8.17,75,8.6,90,9.05,110,9.44,120,10,135,10.38,150,9.57,177.2,8.650327
24,37.9,7.198219,52,7.95,60,8.21,75,8.7,90,9.3,110,9.9,120,10.74,135,12.72,144.4,11.966537,150,11.24

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.86	6.14	6.33	6.19	6.08	5.88	5.22	4.35
8	6.88	7.11	7.26	7.2	7.29	7.14	6.53	5.52
10	7.4	7.59	7.75	7.76	7.94	7.86	7.44	6.59
12	7.62	7.83	8.05	8.13	8.37	8.37	8.03	7.43
14	7.74	7.96	8.26	8.43	8.71	8.83	8.54	7.99
16	7.83	8.05	8.4	8.68	8.96	9.27	9.07	8.48
20	7.93	8.17	8.6	9.05	9.44	10	10.38	9.57
24	7.95	8.21	8.7	9.3	9.9	10.74	12.72	11.24

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.1°	3.89	139.8°	3.76
8	40°	4.72	145.8°	4.78
10	38.2°	5.21	149.6°	5.71
12	37.2°	5.44	155.6°	6.51
14	37.1°	5.56	163.7°	7.15
16	36.8°	5.65	175.4°	7.71
20	36.7°	5.74	177.2°	8.64
24	37.9°	5.68	144.4°	9.73

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