MACHTNIX: ORC Rating

GPH

678.2

OSN

658.5

LOA

7.79 m

Displacement

1519 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6197

Medium

0.8194

High

0.9269

Triple Offshore

Low

0.7891

Medium

0.9893

High

1.1043

Boat Specifications

Dimensions

Length overall: 7.79 m
Beam: 2.5 m
Draft: 1.84 m
Displacement: 1519 kg
Crew weight: 411 kg
Wetted surface: 14.03 m²

Sails

Mainsail: 21.86 m²
Genoa: 18.64 m²
Spinnaker: 44.41 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST CLASS 8
Builder: BENETEAU
Designer: FINOT
Year built: 1982
Stability index: 96.3

Performance data

Polar CSV

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

6,40.8,4.597124,52,5.15,60,5.34,75,5.43,90,5.32,110,5.23,120,5.06,135,4.55,145.6,3.963091,150,3.77
8,38.7,5.304765,52,5.86,60,5.99,75,6.07,90,6.06,110,6.1,120,5.97,135,5.51,150,4.8,150.5,4.779655
10,36.4,5.615648,52,6.2,60,6.32,75,6.43,90,6.49,110,6.6,120,6.5,135,6.18,150,5.65,154.1,5.469354
12,35.8,5.733211,52,6.36,60,6.52,75,6.72,90,6.76,110,7.04,120,6.97,135,6.63,150,6.24,164,5.804871
14,35.8,5.831847,52,6.44,60,6.63,75,6.92,90,7.07,110,7.43,120,7.43,135,7.09,150,6.66,177.2,6.137327
16,35.4,5.851843,52,6.5,60,6.71,75,7.05,90,7.32,110,7.73,120,7.92,135,7.59,150,7.08,178.1,6.533592
20,36,5.896044,52,6.56,60,6.8,75,7.2,90,7.64,110,8.22,120,8.92,135,9.17,150,8.1,178.4,7.322855

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.15	5.34	5.43	5.32	5.23	5.06	4.55	3.77
8	5.86	5.99	6.07	6.06	6.1	5.97	5.51	4.8
10	6.2	6.32	6.43	6.49	6.6	6.5	6.18	5.65
12	6.36	6.52	6.72	6.76	7.04	6.97	6.63	6.24
14	6.44	6.63	6.92	7.07	7.43	7.43	7.09	6.66
16	6.5	6.71	7.05	7.32	7.73	7.92	7.59	7.08
20	6.56	6.8	7.2	7.64	8.22	8.92	9.17	8.1

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	40.8°	3.48	145.6°	3.27
8	38.7°	4.14	150.5°	4.16
10	36.4°	4.52	154.1°	4.92
12	35.8°	4.65	164°	5.58
14	35.8°	4.73	177.2°	6.13
16	35.4°	4.77	178.1°	6.53
20	36°	4.77	178.4°	7.32

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°	5.15	5.86	6.20	6.36	6.44	6.50	6.56
60°	5.34	5.99	6.32	6.52	6.63	6.71	6.80
75°	5.43	6.07	6.43	6.72	6.92	7.05	7.20
90°	5.32	6.06	6.49	6.76	7.07	7.32	7.64
110°	5.23	6.10	6.60	7.04	7.43	7.73	8.22
120°	5.06	5.97	6.50	6.97	7.43	7.92	8.92
135°	4.55	5.51	6.18	6.63	7.09	7.59	9.17
150°	3.77	4.80	5.65	6.24	6.66	7.08	8.10