WESTERGAST: ORC Rating

GPH

597.2

OSN

583.7

LOA

11.293 m

Displacement

7364 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6779

Medium

0.9097

High

1.0494

Triple Offshore

Low

0.8882

Medium

1.1285

High

1.2595

Boat Specifications

Dimensions

Length overall: 11.293 m
Beam: 3.76 m
Draft: 2.02 m
Displacement: 7364 kg
Crew weight: 700 kg
Wetted surface: 31.74 m²

Sails

Mainsail: 48.11 m²
Genoa: 33.42 m²
Spinnaker: 111.27 m²
Asymmetric spinnaker: 0 m²

Design

Type: DEHLER 38 C
Builder: HANSE YACHTS
Designer: JUDEL/VROLIJK
Year built: 2013
Stability index: 121.2

Performance data

Polar CSV

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

6,45.4,5.127087,52,5.62,60,6.06,75,6.55,90,6.65,110,6.04,120,5.71,135,5.16,144.2,4.660546,150,4.37
8,44.2,6.025856,52,6.68,60,7.07,75,7.39,90,7.44,110,7.07,120,6.93,135,6.36,148.8,5.576572,150,5.51
10,42.9,6.511564,52,7.17,60,7.46,75,7.76,90,7.81,110,7.69,120,7.6,135,7.26,150,6.51,151.1,6.442294
12,40.5,6.693793,52,7.38,60,7.63,75,7.96,90,8.1,110,8.08,120,8.03,135,7.75,150,7.29,156.5,6.978823
14,39.4,6.794062,52,7.52,60,7.73,75,8.08,90,8.37,110,8.41,120,8.46,135,8.15,150,7.75,167.6,7.197911
16,39,6.858428,52,7.59,60,7.81,75,8.18,90,8.58,110,8.82,120,8.9,135,8.61,150,8.13,177.2,7.549012
20,39.3,7.016953,52,7.65,60,7.86,75,8.31,90,8.83,110,9.47,120,9.73,135,9.62,150,9,178.1,8.284555

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.62	6.06	6.55	6.65	6.04	5.71	5.16	4.37
8	6.68	7.07	7.39	7.44	7.07	6.93	6.36	5.51
10	7.17	7.46	7.76	7.81	7.69	7.6	7.26	6.51
12	7.38	7.63	7.96	8.1	8.08	8.03	7.75	7.29
14	7.52	7.73	8.08	8.37	8.41	8.46	8.15	7.75
16	7.59	7.81	8.18	8.58	8.82	8.9	8.61	8.13
20	7.65	7.86	8.31	8.83	9.47	9.73	9.62	9

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45.4°	3.6	144.2°	3.78
8	44.2°	4.32	148.8°	4.77
10	42.9°	4.77	151.1°	5.64
12	40.5°	5.09	156.5°	6.4
14	39.4°	5.25	167.6°	7.03
16	39°	5.33	177.2°	7.54
20	39.3°	5.43	178.1°	8.28

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°	5.62	6.68	7.17	7.38	7.52	7.59	7.65
60°	6.06	7.07	7.46	7.63	7.73	7.81	7.86
75°	6.55	7.39	7.76	7.96	8.08	8.18	8.31
90°	6.65	7.44	7.81	8.10	8.37	8.58	8.83
110°	6.04	7.07	7.69	8.08	8.41	8.82	9.47
120°	5.71	6.93	7.60	8.03	8.46	8.90	9.73
135°	5.16	6.36	7.26	7.75	8.15	8.61	9.62
150°	4.37	5.51	6.51	7.29	7.75	8.13	9.00