TIO TONI: ORC Rating

GPH

756.1

OSN

734.8

LOA

7.615 m

Displacement

2920 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.559

Medium

0.7361

High

0.822

Triple Offshore

Low

0.7094

Medium

0.8888

High

0.9719

Boat Specifications

Dimensions

Length overall: 7.615 m
Beam: 2.91 m
Draft: 1.55 m
Displacement: 2920 kg
Crew weight: 150 kg
Wetted surface: 15.55 m²

Sails

Mainsail: 16.97 m²
Genoa: 25.35 m²
Spinnaker: 51.17 m²
Asymmetric spinnaker: 0 m²

Design

Type: HUNTER MARATON
Builder: HUNTER
Year built: 1980
Stability index: 123.8

Performance data

Polar CSV

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

6,42.6,4.034794,52,4.47,60,4.68,75,4.81,90,4.75,110,4.73,120,4.6,135,4.2,147.8,3.710737,150,3.63
8,40.8,4.636754,52,5.16,60,5.34,75,5.46,90,5.44,110,5.55,120,5.47,135,5.12,150,4.56,152.3,4.461293
10,40,5.051926,52,5.55,60,5.69,75,5.8,90,5.86,110,5.97,120,5.93,135,5.72,150,5.31,155.9,5.08307
12,39.3,5.246561,52,5.75,60,5.88,75,6.01,90,6.11,110,6.27,120,6.24,135,6.07,150,5.8,168.2,5.353126
14,38.8,5.29937,52,5.85,60,6,75,6.18,90,6.25,110,6.51,120,6.51,135,6.36,150,6.11,177.2,5.706813
16,38.8,5.337864,52,5.9,60,6.06,75,6.3,90,6.41,110,6.73,120,6.77,135,6.65,150,6.38,179,6.020917
20,39.6,5.334107,52,5.91,60,6.11,75,6.44,90,6.67,110,7.01,120,7.26,135,7.22,150,6.91,179,6.530995

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.47	4.68	4.81	4.75	4.73	4.6	4.2	3.63
8	5.16	5.34	5.46	5.44	5.55	5.47	5.12	4.56
10	5.55	5.69	5.8	5.86	5.97	5.93	5.72	5.31
12	5.75	5.88	6.01	6.11	6.27	6.24	6.07	5.8
14	5.85	6	6.18	6.25	6.51	6.51	6.36	6.11
16	5.9	6.06	6.3	6.41	6.73	6.77	6.65	6.38
20	5.91	6.11	6.44	6.67	7.01	7.26	7.22	6.91

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	2.97	147.8°	3.14
8	40.8°	3.51	152.3°	3.95
10	40°	3.87	155.9°	4.64
12	39.3°	4.06	168.2°	5.24
14	38.8°	4.13	177.2°	5.7
16	38.8°	4.16	179°	6.02
20	39.6°	4.11	179°	6.53

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°	4.47	5.16	5.55	5.75	5.85	5.90	5.91
60°	4.68	5.34	5.69	5.88	6.00	6.06	6.11
75°	4.81	5.46	5.80	6.01	6.18	6.30	6.44
90°	4.75	5.44	5.86	6.11	6.25	6.41	6.67
110°	4.73	5.55	5.97	6.27	6.51	6.73	7.01
120°	4.60	5.47	5.93	6.24	6.51	6.77	7.26
135°	4.20	5.12	5.72	6.07	6.36	6.65	7.22
150°	3.63	4.56	5.31	5.80	6.11	6.38	6.91