MIRALEJOS: ORC Rating

GPH

665.9

OSN

643.2

LOA

9.61 m

Displacement

3712 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.604

Medium

0.8298

High

0.965

Triple Offshore

Low

0.7765

Medium

1.022

High

1.1587

Boat Specifications

Dimensions

Length overall: 9.61 m
Beam: 3.21 m
Draft: 1.92 m
Displacement: 3712 kg
Crew weight: 460 kg
Wetted surface: 21.8 m²

Sails

Mainsail: 25.71 m²
Genoa: 24.76 m²
Spinnaker: 58.62 m²
Asymmetric spinnaker: 57.53 m²

Design

Type: FIRST 31.7
Builder: BENETEAU
Designer: FINOT
Year built: 1998
Stability index: 117.2

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43.6,4.391223,52,4.86,60,5.11,75,5.26,90,5.2,110,5.23,120,5.06,135,4.55,144.8,4.087402,150,3.86
8,41.1,5.175411,52,5.78,60,6.02,75,6.18,90,6.25,110,6.34,120,6.18,135,5.68,147.3,5.086091,150,4.94
10,39.6,5.723458,52,6.37,60,6.56,75,6.71,90,6.87,110,6.98,120,6.88,135,6.53,147.8,5.956087,150,5.82
12,38.4,6.061043,52,6.72,60,6.88,75,7.03,90,7.24,110,7.41,120,7.34,135,7.05,150,6.49,157.7,6.160765
14,37.8,6.226626,52,6.91,60,7.08,75,7.29,90,7.51,110,7.83,120,7.79,135,7.48,150,6.98,169.4,6.419547
16,37.6,6.28558,52,6.99,60,7.21,75,7.5,90,7.67,110,8.21,120,8.23,135,7.93,150,7.37,177.2,6.81814
20,37.8,6.327872,52,7.06,60,7.3,75,7.75,90,8.08,110,8.82,120,9.2,135,8.92,150,8.17,178.1,7.564159

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.86	5.11	5.26	5.2	5.23	5.06	4.55	3.86
8	5.78	6.02	6.18	6.25	6.34	6.18	5.68	4.94
10	6.37	6.56	6.71	6.87	6.98	6.88	6.53	5.82
12	6.72	6.88	7.03	7.24	7.41	7.34	7.05	6.49
14	6.91	7.08	7.29	7.51	7.83	7.79	7.48	6.98
16	6.99	7.21	7.5	7.67	8.21	8.23	7.93	7.37
20	7.06	7.3	7.75	8.08	8.82	9.2	8.92	8.17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.18	144.8°	3.34
8	41.1°	3.9	147.3°	4.28
10	39.6°	4.41	147.8°	5.04
12	38.4°	4.75	157.7°	5.7
14	37.8°	4.92	169.4°	6.31
16	37.6°	4.98	177.2°	6.81
20	37.8°	5	178.1°	7.56

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.86	5.78	6.37	6.72	6.91	6.99	7.06
60°	5.11	6.02	6.56	6.88	7.08	7.21	7.30
75°	5.26	6.18	6.71	7.03	7.29	7.50	7.75
90°	5.20	6.25	6.87	7.24	7.51	7.67	8.08
110°	5.23	6.34	6.98	7.41	7.83	8.21	8.82
120°	5.06	6.18	6.88	7.34	7.79	8.23	9.20
135°	4.55	5.68	6.53	7.05	7.48	7.93	8.92
150°	3.86	4.94	5.82	6.49	6.98	7.37	8.17