Illusion: ORC Rating

GPH

651.2

OSN

632.8

LOA

8.3 m

Displacement

2721 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7157

Medium

0.9544

High

1.0793

Triple Offshore

Low

0.9159

Medium

1.1651

High

1.2976

Boat Specifications

Dimensions

Length overall: 8.3 m
Beam: 3.01 m
Draft: 2.16 m
Displacement: 2721 kg
Crew weight: 549 kg
Wetted surface: 20.27 m²

Sails

Mainsail: 29.08 m²
Genoa: 25.17 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 65.07 m²

Design

Type: First 27.7
Builder: Beneteau
Designer: Groupe Finot
Year built: 2004

Performance data

Polar CSV

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

6,41.4,4.532662,52,5.09,60,5.34,75,5.53,90,5.47,110,5.48,120,5.31,135,4.79,145.3,4.281488,150,4.07
8,40.2,5.381018,52,6.04,60,6.23,75,6.37,90,6.45,110,6.48,120,6.35,135,5.88,148,5.211969,150,5.11
10,38.1,5.921709,52,6.52,60,6.65,75,6.75,90,6.88,110,6.96,120,6.86,135,6.58,148.6,6.068766,150,5.98
12,36.2,6.07217,52,6.71,60,6.87,75,7.04,90,7.11,110,7.44,120,7.33,135,7,150,6.51,150.7,6.467376
14,35.6,6.137001,52,6.79,60,6.97,75,7.28,90,7.43,110,7.87,120,7.88,135,7.47,150,6.84,175.4,6.159842
16,35.3,6.163176,52,6.83,60,7.02,75,7.41,90,7.74,110,8.15,120,8.44,135,8.01,150,7.15,177.7,6.595313
20,35.6,6.259987,52,6.9,60,7.09,75,7.52,90,8.1,110,8.67,120,9.29,135,9.42,150,8.1,177.5,7.266916

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.09	5.34	5.53	5.47	5.48	5.31	4.79	4.07
8	6.04	6.23	6.37	6.45	6.48	6.35	5.88	5.11
10	6.52	6.65	6.75	6.88	6.96	6.86	6.58	5.98
12	6.71	6.87	7.04	7.11	7.44	7.33	7	6.51
14	6.79	6.97	7.28	7.43	7.87	7.88	7.47	6.84
16	6.83	7.02	7.41	7.74	8.15	8.44	8.01	7.15
20	6.9	7.09	7.52	8.1	8.67	9.29	9.42	8.1

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.4°	3.4	145.3°	3.52
8	40.2°	4.11	148°	4.42
10	38.1°	4.66	148.6°	5.18
12	36.2°	4.9	150.7°	5.64
14	35.6°	4.99	175.4°	6.14
16	35.3°	5.03	177.7°	6.59
20	35.6°	5.09	177.5°	7.26

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°	5.09	6.04	6.52	6.71	6.79	6.83	6.90
60°	5.34	6.23	6.65	6.87	6.97	7.02	7.09
75°	5.53	6.37	6.75	7.04	7.28	7.41	7.52
90°	5.47	6.45	6.88	7.11	7.43	7.74	8.10
110°	5.48	6.48	6.96	7.44	7.87	8.15	8.67
120°	5.31	6.35	6.86	7.33	7.88	8.44	9.29
135°	4.79	5.88	6.58	7.00	7.47	8.01	9.42
150°	4.07	5.11	5.98	6.51	6.84	7.15	8.10