ODEM: ORC Rating

GPH

609.3

OSN

599.9

LOA

8.5 m

Displacement

1222 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.703

Medium

0.8724

High

0.9957

Triple Offshore

Low

0.9004

Medium

1.0872

High

1.2184

Boat Specifications

Dimensions

Length overall: 8.5 m
Beam: 2.19 m
Draft: 2 m
Displacement: 1222 kg
Crew weight: 280 kg
Wetted surface: 14.88 m²

Sails

Mainsail: 28.06 m²
Genoa: 17.44 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 72.28 m²

Design

Type: ESSE 850
Builder: PROTEUS YACHTS
Designer: FELCI
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.

6,42.8,5.083615,52,5.69,60,6.01,75,6.22,90,6.18,110,6.24,120,6.09,135,5.46,143,4.970979,150,4.59
8,40.5,5.733779,52,6.4,60,6.63,75,6.87,90,6.87,110,7.02,120,7.04,135,6.62,146.5,6.032001,150,5.81
10,39.8,5.883245,52,6.55,60,6.79,75,7.2,90,7.5,110,7.49,120,7.74,135,7.43,150,6.7,152,6.546255
12,40.1,5.948324,52,6.61,60,6.87,75,7.38,90,7.89,110,7.93,120,8.24,135,8.43,149,7.431455,150,7.36
14,40.5,6.0494,52,6.68,60,6.94,75,7.48,90,8.12,110,8.47,120,8.81,135,9.51,146,8.600334,150,8.23
16,41.1,6.117601,52,6.73,60,7.06,75,7.61,90,8.25,110,9.13,120,9.39,135,10.29,143,10.15482,150,9.36
20,42.6,6.15408,52,6.72,60,7.08,75,7.82,90,8.59,110,9.64,120,10.35,135,11.74,146.8,12.835155,150,12.4

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.69	6.01	6.22	6.18	6.24	6.09	5.46	4.59
8	6.4	6.63	6.87	6.87	7.02	7.04	6.62	5.81
10	6.55	6.79	7.2	7.5	7.49	7.74	7.43	6.7
12	6.61	6.87	7.38	7.89	7.93	8.24	8.43	7.36
14	6.68	6.94	7.48	8.12	8.47	8.81	9.51	8.23
16	6.73	7.06	7.61	8.25	9.13	9.39	10.29	9.36
20	6.72	7.08	7.82	8.59	9.64	10.35	11.74	12.4

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.73	143°	3.97
8	40.5°	4.36	146.5°	5.03
10	39.8°	4.52	152°	5.78
12	40.1°	4.55	149°	6.37
14	40.5°	4.6	146°	7.13
16	41.1°	4.61	143°	8.11
20	42.6°	4.53	146.8°	10.74

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°	5.69	6.40	6.55	6.61	6.68	6.73	6.72
60°	6.01	6.63	6.79	6.87	6.94	7.06	7.08
75°	6.22	6.87	7.20	7.38	7.48	7.61	7.82
90°	6.18	6.87	7.50	7.89	8.12	8.25	8.59
110°	6.24	7.02	7.49	7.93	8.47	9.13	9.64
120°	6.09	7.04	7.74	8.24	8.81	9.39	10.35
135°	5.46	6.62	7.43	8.43	9.51	10.29	11.74
150°	4.59	5.81	6.70	7.36	8.23	9.36	12.40