MIRA — ORC Rating | RegattaPages

GPH

759.1

OSN

740.7

LOA

7.8 m

Displacement

2137 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6213

Medium

0.817

High

0.9078

Triple Offshore

Low

0.7933

Medium

0.9975

High

1.0868

Boat Specifications

Dimensions

Length overall: 7.8 m
Beam: 2.63 m
Draft: 1.47 m
Displacement: 2137 kg
Crew weight: 210 kg
Wetted surface: 14.04 m²

Sails

Mainsail: 15.74 m²
Genoa: 24.11 m²
Spinnaker: 45.05 m²
Asymmetric spinnaker: 0 m²

Design

Type: SCIACCHETRA'
Builder: BARBERIS
Designer: HARLE'
Year built: 1974

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.

6,42,3.915791,52,4.39,60,4.61,75,4.81,90,4.77,110,4.7,120,4.58,135,4.19,148.9,3.678759,150,3.63
8,41.8,4.614501,52,5.17,60,5.4,75,5.55,90,5.55,110,5.61,120,5.52,135,5.12,150,4.52,152.4,4.423363
10,41.8,5.097414,52,5.59,60,5.75,75,5.88,90,5.92,110,6.03,120,5.98,135,5.77,150,5.3,153.7,5.164607
12,41.2,5.249763,52,5.74,60,5.91,75,6.08,90,6.15,110,6.35,120,6.32,135,6.12,150,5.83,172.8,5.301806
14,41.2,5.302925,52,5.79,60,5.97,75,6.22,90,6.36,110,6.62,120,6.64,135,6.44,150,6.14,180,5.76
16,41.4,5.319212,52,5.81,60,6,75,6.29,90,6.54,110,6.76,120,6.93,135,6.78,150,6.44,180,6.07
20,42.4,5.335461,52,5.81,60,5.99,75,6.34,90,6.74,110,6.98,120,7.25,135,7.36,150,7.05,180,6.66

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.39	4.61	4.81	4.77	4.7	4.58	4.19	3.63
8	5.17	5.4	5.55	5.55	5.61	5.52	5.12	4.52
10	5.59	5.75	5.88	5.92	6.03	5.98	5.77	5.3
12	5.74	5.91	6.08	6.15	6.35	6.32	6.12	5.83
14	5.79	5.97	6.22	6.36	6.62	6.64	6.44	6.14
16	5.81	6	6.29	6.54	6.76	6.93	6.78	6.44
20	5.81	5.99	6.34	6.74	6.98	7.25	7.36	7.05

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	2.91	148.9°	3.15
8	41.8°	3.44	152.4°	3.92
10	41.8°	3.8	153.7°	4.63
12	41.2°	3.95	172.8°	5.26
14	41.2°	3.99	180°	5.76
16	41.4°	3.99	180°	6.07
20	42.4°	3.94	180°	6.66

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