FORTUNA III: ORC Rating

GPH

473.5

OSN

462.2

LOA

18.35 m

Displacement

15528 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.8674

Medium

1.1443

High

1.3133

Triple Offshore

Low

1.1236

Medium

1.4211

High

1.5929

Boat Specifications

Dimensions

Length overall: 18.35 m
Beam: 4.45 m
Draft: 3.62 m
Displacement: 15528 kg
Crew weight: 1430 kg
Wetted surface: 56.02 m²

Sails

Mainsail: 117.6 m²
Genoa: 85.94 m²
Spinnaker: 237.82 m²
Asymmetric spinnaker: 232.19 m²

Design

Type: FRERS 60
Builder: AST. ARA
Designer: GERMAN FRERS
Year built: 2004
Stability index: 146

Performance data

Polar CSV

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

6,42.7,6.62662,52,7.39,60,7.79,75,8.08,90,7.93,110,7.36,120,7.09,135,6.33,141.2,5.863951,150,5.27
8,40,7.584416,52,8.55,60,8.89,75,9.13,90,9.05,110,8.83,120,8.67,135,7.92,142.4,7.320555,150,6.7
10,38.4,8.013337,52,9.05,60,9.36,75,9.64,90,9.66,110,9.64,120,9.58,135,9.08,146.6,8.205088,150,7.91
12,37.6,8.267179,52,9.3,60,9.59,75,9.96,90,10.1,110,10.18,120,10.22,135,9.81,150,8.9,151.6,8.776232
14,37.2,8.42404,52,9.46,60,9.75,75,10.18,90,10.48,110,10.55,120,10.82,135,10.47,150,9.62,157.4,9.163677
16,37,8.539565,52,9.57,60,9.87,75,10.36,90,10.79,110,10.9,120,11.33,135,11.2,150,10.23,163.7,9.48109
20,37.5,8.709864,52,9.68,60,10.02,75,10.6,90,11.23,110,11.7,120,12.24,135,13.02,150,11.68,171.2,10.392335

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.39	7.79	8.08	7.93	7.36	7.09	6.33	5.27
8	8.55	8.89	9.13	9.05	8.83	8.67	7.92	6.7
10	9.05	9.36	9.64	9.66	9.64	9.58	9.08	7.91
12	9.3	9.59	9.96	10.1	10.18	10.22	9.81	8.9
14	9.46	9.75	10.18	10.48	10.55	10.82	10.47	9.62
16	9.57	9.87	10.36	10.79	10.9	11.33	11.2	10.23
20	9.68	10.02	10.6	11.23	11.7	12.24	13.02	11.68

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.7°	4.87	141.2°	4.57
8	40°	5.81	142.4°	5.8
10	38.4°	6.28	146.6°	6.85
12	37.6°	6.55	151.6°	7.72
14	37.2°	6.71	157.4°	8.46
16	37°	6.82	163.7°	9.1
20	37.5°	6.91	171.2°	10.27

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°	7.39	8.55	9.05	9.30	9.46	9.57	9.68
60°	7.79	8.89	9.36	9.59	9.75	9.87	10.02
75°	8.08	9.13	9.64	9.96	10.18	10.36	10.60
90°	7.93	9.05	9.66	10.10	10.48	10.79	11.23
110°	7.36	8.83	9.64	10.18	10.55	10.90	11.70
120°	7.09	8.67	9.58	10.22	10.82	11.33	12.24
135°	6.33	7.92	9.08	9.81	10.47	11.20	13.02
150°	5.27	6.70	7.91	8.90	9.62	10.23	11.68