HOBART: ORC Rating

GPH

589.8

OSN

570.3

LOA

12.4 m

Displacement

9205 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6785

Medium

0.9328

High

1.078

Triple Offshore

Low

0.8757

Medium

1.1557

High

1.3007

Boat Specifications

Dimensions

Length overall: 12.4 m
Beam: 3.91 m
Draft: 2.45 m
Displacement: 9205 kg
Crew weight: 320 kg
Wetted surface: 37.46 m²

Sails

Mainsail: 54.04 m²
Genoa: 40.77 m²
Spinnaker: 122.81 m²
Asymmetric spinnaker: 0 m²

Design

Type: DEHLER 41
Builder: DEHLER
Designer: JUDEL/VROLIJK & CO
Year built: 2010
Stability index: 125.9

Performance data

Polar CSV

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

6,43.6,4.957387,52,5.49,60,5.8,75,6.01,90,5.88,110,5.89,120,5.72,135,5.12,143,4.657945,150,4.3
8,41.4,5.892461,52,6.58,60,6.86,75,7.06,90,7.01,110,7.17,120,7.02,135,6.42,146.9,5.705973,150,5.52
10,40,6.500928,52,7.28,60,7.54,75,7.72,90,7.72,110,7.96,120,7.87,135,7.41,150,6.58,150.5,6.549047
12,39.3,6.823114,52,7.64,60,7.89,75,8.1,90,8.13,110,8.42,120,8.39,135,8.06,150,7.44,154.7,7.178548
14,38.8,6.954621,52,7.79,60,8.06,75,8.35,90,8.45,110,8.78,120,8.86,135,8.55,150,8.04,161,7.561988
16,38.8,7.044441,52,7.88,60,8.15,75,8.52,90,8.74,110,9.02,120,9.31,135,9.05,150,8.51,173.6,7.788539
20,39,7.102913,52,7.96,60,8.24,75,8.71,90,9.19,110,9.45,120,9.91,135,10.13,150,9.46,177.2,8.650327

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.49	5.8	6.01	5.88	5.89	5.72	5.12	4.3
8	6.58	6.86	7.06	7.01	7.17	7.02	6.42	5.52
10	7.28	7.54	7.72	7.72	7.96	7.87	7.41	6.58
12	7.64	7.89	8.1	8.13	8.42	8.39	8.06	7.44
14	7.79	8.06	8.35	8.45	8.78	8.86	8.55	8.04
16	7.88	8.15	8.52	8.74	9.02	9.31	9.05	8.51
20	7.96	8.24	8.71	9.19	9.45	9.91	10.13	9.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.59	143°	3.72
8	41.4°	4.42	146.9°	4.78
10	40°	4.98	150.5°	5.7
12	39.3°	5.28	154.7°	6.49
14	38.8°	5.42	161°	7.15
16	38.8°	5.49	173.6°	7.74
20	39°	5.52	177.2°	8.64

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°	5.49	6.58	7.28	7.64	7.79	7.88	7.96
60°	5.80	6.86	7.54	7.89	8.06	8.15	8.24
75°	6.01	7.06	7.72	8.10	8.35	8.52	8.71
90°	5.88	7.01	7.72	8.13	8.45	8.74	9.19
110°	5.89	7.17	7.96	8.42	8.78	9.02	9.45
120°	5.72	7.02	7.87	8.39	8.86	9.31	9.91
135°	5.12	6.42	7.41	8.06	8.55	9.05	10.13
150°	4.30	5.52	6.58	7.44	8.04	8.51	9.46