Casper: ORC Rating

GPH

630.9

OSN

617.2

LOA

10.5 m

Displacement

5842 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6499

Medium

0.863

High

0.9702

Triple Offshore

Low

0.8456

Medium

1.0679

High

1.1718

Boat Specifications

Dimensions

Length overall: 10.5 m
Beam: 3.47 m
Draft: 2 m
Displacement: 5842 kg
Crew weight: 180 kg
Wetted surface: 26.42 m²

Sails

Mainsail: 41.62 m²
Genoa: 31.19 m²
Spinnaker: 97.26 m²
Asymmetric spinnaker: 76.92 m²

Design

Type: Dehler 34 SV
Builder: Dehler
Designer: Simonis-Voogd
Year built: 2007
Stability index: 121.4

Performance data

Polar CSV

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

6,43.2,4.636688,52,5.16,60,5.46,75,5.91,90,6.13,110,5.94,120,5.63,135,5.07,144.8,4.527961,150,4.28
8,41.8,5.459599,52,6.12,60,6.43,75,6.82,90,7.03,110,6.93,120,6.74,135,6.23,149.3,5.431166,150,5.39
10,41.8,6.049826,52,6.7,60,6.95,75,7.13,90,7.41,110,7.4,120,7.33,135,7.04,150,6.38,151.1,6.316647
12,41.2,6.219972,52,6.9,60,7.14,75,7.37,90,7.6,110,7.77,120,7.73,135,7.48,150,7.08,158.3,6.737467
14,41.2,6.299716,52,6.97,60,7.21,75,7.52,90,7.75,110,8.12,120,8.13,135,7.9,150,7.5,171.8,6.93086
16,41.1,6.356466,52,7,60,7.24,75,7.59,90,7.9,110,8.44,120,8.51,135,8.37,150,7.89,178.1,7.314021
20,41.8,6.425425,52,7.09,60,7.34,75,7.64,90,8.14,110,8.83,120,9.17,135,9.4,150,8.81,177.2,8.089658

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.16	5.46	5.91	6.13	5.94	5.63	5.07	4.28
8	6.12	6.43	6.82	7.03	6.93	6.74	6.23	5.39
10	6.7	6.95	7.13	7.41	7.4	7.33	7.04	6.38
12	6.9	7.14	7.37	7.6	7.77	7.73	7.48	7.08
14	6.97	7.21	7.52	7.75	8.12	8.13	7.9	7.5
16	7	7.24	7.59	7.9	8.44	8.51	8.37	7.89
20	7.09	7.34	7.64	8.14	8.83	9.17	9.4	8.81

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.38	144.8°	3.7
8	41.8°	4.07	149.3°	4.67
10	41.8°	4.51	151.1°	5.53
12	41.2°	4.68	158.3°	6.26
14	41.2°	4.74	171.8°	6.86
16	41.1°	4.79	178.1°	7.31
20	41.8°	4.79	177.2°	8.08

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°	5.16	6.12	6.70	6.90	6.97	7.00	7.09
60°	5.46	6.43	6.95	7.14	7.21	7.24	7.34
75°	5.91	6.82	7.13	7.37	7.52	7.59	7.64
90°	6.13	7.03	7.41	7.60	7.75	7.90	8.14
110°	5.94	6.93	7.40	7.77	8.12	8.44	8.83
120°	5.63	6.74	7.33	7.73	8.13	8.51	9.17
135°	5.07	6.23	7.04	7.48	7.90	8.37	9.40
150°	4.28	5.39	6.38	7.08	7.50	7.89	8.81