TOSTAKI: ORC Rating

GPH

696.2

OSN

675.6

LOA

7.78 m

Displacement

1449 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6608

Medium

0.8953

High

1.0129

Triple Offshore

Low

0.8509

Medium

1.0917

High

1.2242

Boat Specifications

Dimensions

Length overall: 7.78 m
Beam: 2.5 m
Draft: 1.83 m
Displacement: 1449 kg
Crew weight: 350 kg
Wetted surface: 13.9 m²

Sails

Mainsail: 19.67 m²
Genoa: 13.94 m²
Spinnaker: 43.33 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST CLASS 8
Builder: BENETEAU
Designer: FINOT
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.

6,41.3,4.166311,52,4.68,60,4.91,75,5.09,90,5.21,110,5.22,120,5.05,135,4.53,146.7,3.90042,150,3.76
8,40.5,4.944727,52,5.54,60,5.74,75,5.88,90,6.09,110,6.11,120,6,135,5.52,150,4.76,150.8,4.71978
10,39,5.455861,52,6.01,60,6.15,75,6.26,90,6.48,110,6.59,120,6.48,135,6.2,150,5.64,152,5.549593
12,37.2,5.624396,52,6.22,60,6.39,75,6.57,90,6.7,110,7.09,120,6.99,135,6.63,150,6.24,165,5.797547
14,37.1,5.679653,52,6.3,60,6.5,75,6.84,90,6.97,110,7.49,120,7.56,135,7.14,150,6.64,180,6.14
16,37.8,5.733052,52,6.33,60,6.56,75,7,90,7.32,110,7.76,120,8.13,135,7.7,150,7.1,180,6.52
20,38.8,5.774132,52,6.35,60,6.57,75,7.1,90,7.72,110,8.3,120,8.92,135,9.24,150,8.21,180,7.39

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.68	4.91	5.09	5.21	5.22	5.05	4.53	3.76
8	5.54	5.74	5.88	6.09	6.11	6	5.52	4.76
10	6.01	6.15	6.26	6.48	6.59	6.48	6.2	5.64
12	6.22	6.39	6.57	6.7	7.09	6.99	6.63	6.24
14	6.3	6.5	6.84	6.97	7.49	7.56	7.14	6.64
16	6.33	6.56	7	7.32	7.76	8.13	7.7	7.1
20	6.35	6.57	7.1	7.72	8.3	8.92	9.24	8.21

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.3°	3.13	146.7°	3.26
8	40.5°	3.76	150.8°	4.12
10	39°	4.24	152°	4.9
12	37.2°	4.48	165°	5.6
14	37.1°	4.53	180°	6.14
16	37.8°	4.53	180°	6.52
20	38.8°	4.5	180°	7.39

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°	4.68	5.54	6.01	6.22	6.30	6.33	6.35
60°	4.91	5.74	6.15	6.39	6.50	6.56	6.57
75°	5.09	5.88	6.26	6.57	6.84	7.00	7.10
90°	5.21	6.09	6.48	6.70	6.97	7.32	7.72
110°	5.22	6.11	6.59	7.09	7.49	7.76	8.30
120°	5.05	6.00	6.48	6.99	7.56	8.13	8.92
135°	4.53	5.52	6.20	6.63	7.14	7.70	9.24
150°	3.76	4.76	5.64	6.24	6.64	7.10	8.21