Miria — ORC Rating | RegattaPages

GPH

741.5

OSN

717.6

LOA

9.4 m

Displacement

3966 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5522

Medium

0.7483

High

0.8673

Triple Offshore

Low

0.7045

Medium

0.9143

High

1.0228

Boat Specifications

Dimensions

Length overall: 9.4 m
Beam: 3.06 m
Draft: 1.72 m
Displacement: 3966 kg
Crew weight: 462 kg
Wetted surface: 18.43 m²

Sails

Mainsail: 17.2 m²
Genoa: 28.88 m²
Spinnaker: 63.4 m²
Asymmetric spinnaker: 0 m²

Design

Type: UFO 31
Builder: COLVIC CRAFT
Designer: HOLMAN & PYE
Year built: 1976
Stability index: 123.8

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.

6,42.4,3.859407,52,4.32,60,4.54,75,4.69,90,4.64,110,4.76,120,4.63,135,4.27,148.4,3.757073,150,3.7
8,40.6,4.477978,52,5.08,60,5.34,75,5.53,90,5.6,110,5.75,120,5.63,135,5.19,150,4.61,152.4,4.513636
10,41.4,5.092579,52,5.67,60,5.86,75,6,90,6.15,110,6.25,120,6.2,135,5.95,150,5.42,152.4,5.314806
12,40.2,5.459573,52,5.98,60,6.13,75,6.25,90,6.4,110,6.56,120,6.52,135,6.34,150,6.03,160.1,5.70038
14,39.6,5.645588,52,6.15,60,6.29,75,6.43,90,6.52,110,6.83,120,6.81,135,6.63,150,6.36,174.8,5.914341
16,39.1,5.708422,52,6.23,60,6.4,75,6.58,90,6.66,110,7.06,120,7.11,135,6.94,150,6.64,179,6.250952
20,39.1,5.734193,52,6.28,60,6.47,75,6.8,90,6.99,110,7.3,120,7.55,135,7.53,150,7.2,179,6.771031

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.32	4.54	4.69	4.64	4.76	4.63	4.27	3.7
8	5.08	5.34	5.53	5.6	5.75	5.63	5.19	4.61
10	5.67	5.86	6	6.15	6.25	6.2	5.95	5.42
12	5.98	6.13	6.25	6.4	6.56	6.52	6.34	6.03
14	6.15	6.29	6.43	6.52	6.83	6.81	6.63	6.36
16	6.23	6.4	6.58	6.66	7.06	7.11	6.94	6.64
20	6.28	6.47	6.8	6.99	7.3	7.55	7.53	7.2

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	2.85	148.4°	3.2
8	40.6°	3.4	152.4°	4
10	41.4°	3.82	152.4°	4.71
12	40.2°	4.17	160.1°	5.36
14	39.6°	4.35	174.8°	5.89
16	39.1°	4.43	179°	6.25
20	39.1°	4.45	179°	6.77

Loading polar chart…