PURA CEPA — ORC Rating

GPH

687.3

OSN

670

LOA

9.1 m

Displacement

3328 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6907

Medium

0.9097

High

1.0215

Triple Offshore

Low

0.8783

Medium

1.0997

High

1.2048

Boat Specifications

Dimensions

Length overall: 9.1 m
Beam: 2.61 m
Draft: 1.73 m
Displacement: 3328 kg
Crew weight: 514 kg
Wetted surface: 17.09 m²

Sails

Mainsail: 22.61 m²
Genoa: 30.77 m²
Spinnaker: 62.12 m²
Asymmetric spinnaker: 0 m²

Design

Type: MIURA 31
Builder: CESPEDES Y PEONA
Designer: ROBERTO ROVERE
Year built: 1973

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.

6,41.3,4.392596,52,4.91,60,5.15,75,5.32,90,5.26,110,5.14,120,5.01,135,4.59,147.9,4.049004,150,3.96
8,40.9,5.15973,52,5.77,60,5.95,75,6.07,90,6.06,110,6.11,120,6,135,5.6,150,4.92,151.5,4.847425
10,39.8,5.648956,52,6.17,60,6.3,75,6.4,90,6.44,110,6.54,120,6.48,135,6.25,150,5.75,153.1,5.617867
12,38.8,5.786963,52,6.33,60,6.47,75,6.61,90,6.66,110,6.86,120,6.82,135,6.6,150,6.3,166.5,5.810546
14,38.4,5.844122,52,6.39,60,6.55,75,6.78,90,6.89,110,7.15,120,7.17,135,6.93,150,6.62,180,6.19
16,38.2,5.878933,52,6.42,60,6.59,75,6.87,90,7.09,110,7.31,120,7.49,135,7.29,150,6.93,180,6.53
20,38.2,5.891658,52,6.44,60,6.62,75,6.95,90,7.35,110,7.57,120,7.87,135,7.97,150,7.58,180,7.13

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.91	5.15	5.32	5.26	5.14	5.01	4.59	3.96
8	5.77	5.95	6.07	6.06	6.11	6	5.6	4.92
10	6.17	6.3	6.4	6.44	6.54	6.48	6.25	5.75
12	6.33	6.47	6.61	6.66	6.86	6.82	6.6	6.3
14	6.39	6.55	6.78	6.89	7.15	7.17	6.93	6.62
16	6.42	6.59	6.87	7.09	7.31	7.49	7.29	6.93
20	6.44	6.62	6.95	7.35	7.57	7.87	7.97	7.58

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.3°	3.3	147.9°	3.43
8	40.9°	3.9	151.5°	4.26
10	39.8°	4.34	153.1°	5.01
12	38.8°	4.51	166.5°	5.65
14	38.4°	4.58	180°	6.19
16	38.2°	4.62	180°	6.53
20	38.2°	4.63	180°	7.13

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