TESA: ORC Rating

GPH

641.7

OSN

627.5

LOA

9.99 m

Displacement

4034 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6365

Medium

0.8486

High

0.9573

Triple Offshore

Low

0.8295

Medium

1.0511

High

1.1561

Boat Specifications

Dimensions

Length overall: 9.99 m
Beam: 2.98 m
Draft: 1.75 m
Displacement: 4034 kg
Crew weight: 360 kg
Wetted surface: 22.77 m²

Sails

Mainsail: 32.71 m²
Genoa: 20.92 m²
Spinnaker: 73.82 m²
Asymmetric spinnaker: 80.3 m²

Design

Type: Dehler 33 cruising
Builder: Dehler Yachts
Designer: Judel/Vrolijk
Year built: 1977

Performance data

Polar CSV

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

6,43.5,4.659663,52,5.19,60,5.52,75,5.85,90,5.82,110,5.7,120,5.54,135,4.96,145,4.321542,150,4.09
8,42,5.476725,52,6.15,60,6.47,75,6.72,90,6.7,110,6.78,120,6.66,135,6.1,150,5.161511
10,41.6,5.950804,52,6.64,60,6.89,75,7.1,90,7.12,110,7.27,120,7.21,135,6.93,148.5,6.274628,150,6.18
12,40.9,6.138756,52,6.8,60,7.05,75,7.3,90,7.39,110,7.61,120,7.62,135,7.36,150,6.94,158,6.600633
14,40.5,6.207211,52,6.88,60,7.12,75,7.41,90,7.61,110,7.84,120,8.06,135,7.79,150,7.35,180,6.72
16,40.9,6.271057,52,6.93,60,7.17,75,7.46,90,7.78,110,8.06,120,8.41,135,8.3,150,7.75,180,7.18
20,41.2,6.259844,52,6.92,60,7.17,75,7.5,90,7.97,110,8.44,120,8.93,135,9.48,150,8.74,180,7.95

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.19	5.52	5.85	5.82	5.7	5.54	4.96	4.09
8	6.15	6.47	6.72	6.7	6.78	6.66	6.1	5.16
10	6.64	6.89	7.1	7.12	7.27	7.21	6.93	6.18
12	6.8	7.05	7.3	7.39	7.61	7.62	7.36	6.94
14	6.88	7.12	7.41	7.61	7.84	8.06	7.79	7.35
16	6.93	7.17	7.46	7.78	8.06	8.41	8.3	7.75
20	6.92	7.17	7.5	7.97	8.44	8.93	9.48	8.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	3.38	145°	3.54
8	42°	4.07	150°	4.47
10	41.6°	4.45	148.5°	5.35
12	40.9°	4.64	158°	6.12
14	40.5°	4.72	180°	6.72
16	40.9°	4.74	180°	7.18
20	41.2°	4.71	180°	7.95

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°	5.19	6.15	6.64	6.80	6.88	6.93	6.92
60°	5.52	6.47	6.89	7.05	7.12	7.17	7.17
75°	5.85	6.72	7.10	7.30	7.41	7.46	7.50
90°	5.82	6.70	7.12	7.39	7.61	7.78	7.97
110°	5.70	6.78	7.27	7.61	7.84	8.06	8.44
120°	5.54	6.66	7.21	7.62	8.06	8.41	8.93
135°	4.96	6.10	6.93	7.36	7.79	8.30	9.48
150°	4.09	5.16	6.18	6.94	7.35	7.75	8.74