MECACHIS — ORC Rating

GPH

791.2

OSN

773.4

LOA

6.06 m

Displacement

920 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5416

Medium

0.6914

High

0.7569

Triple Offshore

Low

0.6892

Medium

0.8426

High

0.9188

Boat Specifications

Dimensions

Length overall: 6.06 m
Beam: 2.3 m
Draft: 0.89 m
Displacement: 920 kg
Crew weight: 240 kg
Wetted surface: 7.94 m²

Sails

Mainsail: 14.61 m²
Genoa: 7.73 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 28.88 m²

Design

Type: UNNA 20
Builder: DB YACHTS
Designer: GEORG NISSEN
Year built: 1996

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.

6,42.9,3.795,52,4.2,60,4.41,75,4.58,90,4.79,110,4.82,120,4.68,135,4.29,147.4,3.810304,150,3.71
8,41.8,4.386459,52,4.85,60,5.01,75,5.16,90,5.37,110,5.39,120,5.32,135,5.06,148.5,4.620941,150,4.55
10,40.6,4.741388,52,5.19,60,5.31,75,5.46,90,5.71,110,5.76,120,5.69,135,5.5,150,5.1,150.1,5.098646
12,39.4,4.917607,52,5.38,60,5.51,75,5.65,90,5.95,110,6.11,120,6.04,135,5.83,150,5.43,174.8,4.940332
14,39.9,5.005441,52,5.47,60,5.63,75,5.85,90,6.09,110,6.43,120,6.4,135,6.16,150,5.69,177.2,5.316347
16,40.5,5.036783,52,5.5,60,5.69,75,5.99,90,6.2,110,6.75,120,6.8,135,6.51,150,5.95,177.7,5.584499
20,43.2,5.061946,52,5.47,60,5.72,75,6.12,90,6.48,110,7.24,120,7.75,135,7.51,150,6.5,177.5,6.105811
24,48.6,5.050567,52,5.29,60,5.61,75,6.14,90,6.66,110,7.62,120,8.52,135,9.22,150,7.26,176.6,6.671743

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.2	4.41	4.58	4.79	4.82	4.68	4.29	3.71
8	4.85	5.01	5.16	5.37	5.39	5.32	5.06	4.55
10	5.19	5.31	5.46	5.71	5.76	5.69	5.5	5.1
12	5.38	5.51	5.65	5.95	6.11	6.04	5.83	5.43
14	5.47	5.63	5.85	6.09	6.43	6.4	6.16	5.69
16	5.5	5.69	5.99	6.2	6.75	6.8	6.51	5.95
20	5.47	5.72	6.12	6.48	7.24	7.75	7.51	6.5
24	5.29	5.61	6.14	6.66	7.62	8.52	9.22	7.26

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	2.78	147.4°	3.21
8	41.8°	3.27	148.5°	3.94
10	40.6°	3.6	150.1°	4.42
12	39.4°	3.8	174.8°	4.92
14	39.9°	3.84	177.2°	5.31
16	40.5°	3.83	177.7°	5.58
20	43.2°	3.69	177.5°	6.1
24	48.6°	3.34	176.6°	6.66

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