RATETA: ORC Rating

GPH

700.2

OSN

679.4

LOA

8.99 m

Displacement

3712 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5891

Medium

0.7933

High

0.9021

Triple Offshore

Low

0.7553

Medium

0.9651

High

1.0661

Boat Specifications

Dimensions

Length overall: 8.99 m
Beam: 3.24 m
Draft: 1.74 m
Displacement: 3712 kg
Crew weight: 260 kg
Wetted surface: 19.57 m²

Sails

Mainsail: 25.1 m²
Genoa: 26.24 m²
Spinnaker: 53.13 m²
Asymmetric spinnaker: 0 m²

Design

Type: FORTUNA 9
Builder: MONOTIPO
Designer: J. VISIERS
Year built: 1989
Stability index: 116.4

Performance data

Polar CSV

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

6,42.7,4.327033,52,4.82,60,5.05,75,5.21,90,5.13,110,5.06,120,4.89,135,4.38,146.2,3.862888,150,3.7
8,40.6,5.03114,52,5.62,60,5.82,75,5.97,90,5.94,110,6.01,120,5.88,135,5.39,150,4.73,151.1,4.683228
10,39.4,5.487014,52,6.08,60,6.24,75,6.36,90,6.43,110,6.51,120,6.44,135,6.13,150,5.58,155,5.362417
12,38.8,5.735637,52,6.31,60,6.46,75,6.61,90,6.7,110,6.84,120,6.79,135,6.56,150,6.21,162.8,5.788889
14,38.2,5.802583,52,6.42,60,6.58,75,6.78,90,6.85,110,7.13,120,7.09,135,6.89,150,6.59,175.4,6.10968
16,38.2,5.866208,52,6.47,60,6.65,75,6.91,90,7.04,110,7.37,120,7.38,135,7.21,150,6.9,179,6.490989
20,38.7,5.894183,52,6.51,60,6.71,75,7.04,90,7.32,110,7.69,120,7.96,135,7.88,150,7.52,179,7.09108

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.82	5.05	5.21	5.13	5.06	4.89	4.38	3.7
8	5.62	5.82	5.97	5.94	6.01	5.88	5.39	4.73
10	6.08	6.24	6.36	6.43	6.51	6.44	6.13	5.58
12	6.31	6.46	6.61	6.7	6.84	6.79	6.56	6.21
14	6.42	6.58	6.78	6.85	7.13	7.09	6.89	6.59
16	6.47	6.65	6.91	7.04	7.37	7.38	7.21	6.9
20	6.51	6.71	7.04	7.32	7.69	7.96	7.88	7.52

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.7°	3.18	146.2°	3.21
8	40.6°	3.82	151.1°	4.1
10	39.4°	4.24	155°	4.86
12	38.8°	4.47	162.8°	5.53
14	38.2°	4.56	175.4°	6.09
16	38.2°	4.61	179°	6.49
20	38.7°	4.6	179°	7.09

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°	4.82	5.62	6.08	6.31	6.42	6.47	6.51
60°	5.05	5.82	6.24	6.46	6.58	6.65	6.71
75°	5.21	5.97	6.36	6.61	6.78	6.91	7.04
90°	5.13	5.94	6.43	6.70	6.85	7.04	7.32
110°	5.06	6.01	6.51	6.84	7.13	7.37	7.69
120°	4.89	5.88	6.44	6.79	7.09	7.38	7.96
135°	4.38	5.39	6.13	6.56	6.89	7.21	7.88
150°	3.70	4.73	5.58	6.21	6.59	6.90	7.52