Mira — ORC Rating | RegattaPages

GPH

772.9

OSN

747.8

LOA

8.7 m

Displacement

3790 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5181

Medium

0.7055

High

0.8257

Triple Offshore

Low

0.6658

Medium

0.8819

High

1.0003

Boat Specifications

Dimensions

Length overall: 8.7 m
Beam: 2.99 m
Draft: 1.56 m
Displacement: 3790 kg
Crew weight: 465 kg
Wetted surface: 20.16 m²

Sails

Mainsail: 16.61 m²
Genoa: 25.95 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 44.57 m²

Design

Type: MAXI 87
Builder: Mölnlycke Marin AB
Designer: Pelle Petterson
Year built: 1974
Stability index: 112.2

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.

6,44.2,3.794057,52,4.18,60,4.41,75,4.52,90,4.42,110,4.46,120,4.3,135,3.89,145.1,3.523738,150,3.33
8,42.3,4.488724,52,4.99,60,5.22,75,5.35,90,5.37,110,5.42,120,5.27,135,4.86,145.7,4.442571,150,4.24
10,40.9,4.974509,52,5.54,60,5.74,75,5.9,90,6.03,110,6.09,120,5.98,135,5.63,145.6,5.211404,150,4.96
12,40,5.313008,52,5.89,60,6.07,75,6.23,90,6.4,110,6.49,120,6.42,135,6.17,146,5.765722,150,5.52
14,39.9,5.526841,52,6.1,60,6.27,75,6.44,90,6.64,110,6.79,120,6.74,135,6.53,150,5.92,170.3,5.305855
16,39.4,5.603484,52,6.2,60,6.38,75,6.6,90,6.81,110,7.06,120,7.04,135,6.82,150,6.26,171.2,5.788136
20,39.4,5.655248,52,6.27,60,6.47,75,6.78,90,6.98,110,7.51,120,7.59,135,7.38,150,6.74,174.8,6.406366

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.18	4.41	4.52	4.42	4.46	4.3	3.89	3.33
8	4.99	5.22	5.35	5.37	5.42	5.27	4.86	4.24
10	5.54	5.74	5.9	6.03	6.09	5.98	5.63	4.96
12	5.89	6.07	6.23	6.4	6.49	6.42	6.17	5.52
14	6.1	6.27	6.44	6.64	6.79	6.74	6.53	5.92
16	6.2	6.38	6.6	6.81	7.06	7.04	6.82	6.26
20	6.27	6.47	6.78	6.98	7.51	7.59	7.38	6.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	2.72	145.1°	2.89
8	42.3°	3.32	145.7°	3.67
10	40.9°	3.76	145.6°	4.3
12	40°	4.07	146°	4.78
14	39.9°	4.24	170.3°	5.23
16	39.4°	4.33	171.2°	5.72
20	39.4°	4.37	174.8°	6.38

Loading polar chart…