FERROFILATO: ORC Rating

GPH

698.2

OSN

677.5

LOA

12.1 m

Displacement

9010 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.623

Medium

0.8769

High

1.0475

Triple Offshore

Low

0.8175

Medium

1.1024

High

1.2661

Boat Specifications

Dimensions

Length overall: 12.1 m
Beam: 3.92 m
Draft: 1.74 m
Displacement: 9010 kg
Crew weight: 270 kg
Wetted surface: 32.45 m²

Sails

Mainsail: 34.78 m²
Genoa: 49.48 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 405
Builder: BENETEAU
Designer: BERRET
Year built: 1987

Performance data

Polar CSV

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

6,44.6,4.381862,52,4.83,60,5.13,75,5.38,90,5.34,110,4.8,120,4.55,135,3.93,147.2,3.39057,150,3.29
8,42.8,5.110873,52,5.71,60,6.04,75,6.34,90,6.3,110,5.84,120,5.52,135,4.95,150,4.29,167.8,3.846878
10,42.6,5.719354,52,6.43,60,6.76,75,6.99,90,7.01,110,6.72,120,6.38,135,5.77,150,5.12,169,4.665722
12,43.8,6.276323,52,6.85,60,7.1,75,7.31,90,7.36,110,7.22,120,7.03,135,6.53,150,5.84,170.1,5.380114
14,43.1,6.464316,52,7.05,60,7.29,75,7.51,90,7.6,110,7.52,120,7.4,135,7.08,150,6.54,170.3,6.046443
16,42.5,6.537567,52,7.14,60,7.39,75,7.67,90,7.79,110,7.77,120,7.67,135,7.41,150,7.05,171.3,6.666708
20,42.5,6.564694,52,7.19,60,7.46,75,7.85,90,8.14,110,8.26,120,8.18,135,7.9,150,7.63,175.4,7.393816

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.83	5.13	5.38	5.34	4.8	4.55	3.93	3.29
8	5.71	6.04	6.34	6.3	5.84	5.52	4.95	4.29
10	6.43	6.76	6.99	7.01	6.72	6.38	5.77	5.12
12	6.85	7.1	7.31	7.36	7.22	7.03	6.53	5.84
14	7.05	7.29	7.51	7.6	7.52	7.4	7.08	6.54
16	7.14	7.39	7.67	7.79	7.77	7.67	7.41	7.05
20	7.19	7.46	7.85	8.14	8.26	8.18	7.9	7.63

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.6°	3.12	147.2°	2.85
8	42.8°	3.75	167.8°	3.76
10	42.6°	4.21	169°	4.58
12	43.8°	4.53	170.1°	5.3
14	43.1°	4.72	170.3°	5.96
16	42.5°	4.82	171.3°	6.59
20	42.5°	4.84	175.4°	7.37

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°	4.83	5.71	6.43	6.85	7.05	7.14	7.19
60°	5.13	6.04	6.76	7.10	7.29	7.39	7.46
75°	5.38	6.34	6.99	7.31	7.51	7.67	7.85
90°	5.34	6.30	7.01	7.36	7.60	7.79	8.14
110°	4.80	5.84	6.72	7.22	7.52	7.77	8.26
120°	4.55	5.52	6.38	7.03	7.40	7.67	8.18
135°	3.93	4.95	5.77	6.53	7.08	7.41	7.90
150°	3.29	4.29	5.12	5.84	6.54	7.05	7.63