ZOSPIRO: ORC Rating

GPH

665.6

OSN

650.5

LOA

9.012 m

Displacement

2319 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6268

Medium

0.8242

High

0.9207

Triple Offshore

Low

0.8067

Medium

1.0087

High

1.1111

Boat Specifications

Dimensions

Length overall: 9.012 m
Beam: 3.01 m
Draft: 1.69 m
Displacement: 2319 kg
Crew weight: 452 kg
Wetted surface: 15.87 m²

Sails

Mainsail: 29.32 m²
Genoa: 23.26 m²
Spinnaker: 45.64 m²
Asymmetric spinnaker: 0 m²

Design

Type: HALF 82
Builder: FOUNTAINE
Designer: JOUBERT NIVELT
Year built: 1982

Performance data

Polar CSV

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

6,42,4.61552,52,5.2,60,5.5,75,5.72,90,5.66,110,5.38,120,5.17,135,4.63,147,4.054035,150,3.92
8,41.2,5.462412,52,6.04,60,6.22,75,6.35,90,6.37,110,6.33,120,6.19,135,5.69,150,4.93,151,4.882122
10,39.8,5.818165,52,6.38,60,6.54,75,6.7,90,6.75,110,6.82,120,6.71,135,6.38,150,5.81,153.5,5.654046
12,39,5.893359,52,6.49,60,6.7,75,6.97,90,7.08,110,7.27,120,7.17,135,6.82,150,6.43,168,5.878458
14,39,5.944829,52,6.55,60,6.78,75,7.15,90,7.38,110,7.66,120,7.59,135,7.27,150,6.84,180,6.34
16,39.6,5.983025,52,6.58,60,6.82,75,7.24,90,7.6,110,7.96,120,8.02,135,7.69,150,7.25,180,6.75
20,40.5,6.036249,52,6.63,60,6.88,75,7.31,90,7.82,110,8.38,120,8.89,135,8.71,150,8.07,180,7.53

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.2	5.5	5.72	5.66	5.38	5.17	4.63	3.92
8	6.04	6.22	6.35	6.37	6.33	6.19	5.69	4.93
10	6.38	6.54	6.7	6.75	6.82	6.71	6.38	5.81
12	6.49	6.7	6.97	7.08	7.27	7.17	6.82	6.43
14	6.55	6.78	7.15	7.38	7.66	7.59	7.27	6.84
16	6.58	6.82	7.24	7.6	7.96	8.02	7.69	7.25
20	6.63	6.88	7.31	7.82	8.38	8.89	8.71	8.07

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.43	147°	3.4
8	41.2°	4.11	151°	4.27
10	39.8°	4.47	153.5°	5.06
12	39°	4.58	168°	5.75
14	39°	4.62	180°	6.34
16	39.6°	4.61	180°	6.75
20	40.5°	4.59	180°	7.53

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°	5.20	6.04	6.38	6.49	6.55	6.58	6.63
60°	5.50	6.22	6.54	6.70	6.78	6.82	6.88
75°	5.72	6.35	6.70	6.97	7.15	7.24	7.31
90°	5.66	6.37	6.75	7.08	7.38	7.60	7.82
110°	5.38	6.33	6.82	7.27	7.66	7.96	8.38
120°	5.17	6.19	6.71	7.17	7.59	8.02	8.89
135°	4.63	5.69	6.38	6.82	7.27	7.69	8.71
150°	3.92	4.93	5.81	6.43	6.84	7.25	8.07