Alibi: ORC Rating

GPH

587.1

OSN

569.4

LOA

12.4 m

Displacement

8952 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7567

Medium

1.0523

High

1.2315

Triple Offshore

Low

0.9848

Medium

1.306

High

1.4827

Boat Specifications

Dimensions

Length overall: 12.4 m
Beam: 3.91 m
Draft: 2.42 m
Displacement: 8952 kg
Crew weight: 888 kg
Wetted surface: 38.68 m²

Sails

Mainsail: 53.88 m²
Genoa: 41.16 m²
Spinnaker: 142.87 m²
Asymmetric spinnaker: 126.5 m²

Design

Type: Dehler 41 SV DK
Builder: Dehler Segelyachte
Designer: Simonis & Vogd
Year built: 2011

Performance data

Polar CSV

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

6,43.8,4.821546,52,5.39,60,5.73,75,6.02,90,5.98,110,6.03,120,5.88,135,5.32,139.5,5.049934,150,4.44
8,41.8,5.71447,52,6.43,60,6.78,75,7.07,90,7.22,110,7.31,120,7.17,135,6.58,148.1,5.64212,150,5.53
10,41.3,6.482407,52,7.24,60,7.51,75,7.71,90,7.92,110,8.03,120,7.94,135,7.56,146.7,6.879576,150,6.64
12,40.2,6.978303,52,7.7,60,7.91,75,8.07,90,8.26,110,8.46,120,8.41,135,8.12,150,7.54,154.5,7.301249
14,39.3,7.146178,52,7.9,60,8.12,75,8.34,90,8.42,110,8.86,120,8.88,135,8.54,150,8.07,163,7.549894
16,38.9,7.208544,52,7.98,60,8.21,75,8.55,90,8.68,110,9.24,120,9.4,135,9.04,150,8.47,180,7.8
20,38.9,7.285641,52,8.02,60,8.28,75,8.75,90,9.24,110,9.74,120,10.29,135,10.23,150,9.41,180,8.61

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.39	5.73	6.02	5.98	6.03	5.88	5.32	4.44
8	6.43	6.78	7.07	7.22	7.31	7.17	6.58	5.53
10	7.24	7.51	7.71	7.92	8.03	7.94	7.56	6.64
12	7.7	7.91	8.07	8.26	8.46	8.41	8.12	7.54
14	7.9	8.12	8.34	8.42	8.86	8.88	8.54	8.07
16	7.98	8.21	8.55	8.68	9.24	9.4	9.04	8.47
20	8.02	8.28	8.75	9.24	9.74	10.29	10.23	9.41

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.8°	3.48	139.5°	3.84
8	41.8°	4.26	148.1°	4.79
10	41.3°	4.87	146.7°	5.75
12	40.2°	5.33	154.5°	6.59
14	39.3°	5.53	163°	7.22
16	38.9°	5.61	180°	7.8
20	38.9°	5.67	180°	8.61

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°	5.39	6.43	7.24	7.70	7.90	7.98	8.02
60°	5.73	6.78	7.51	7.91	8.12	8.21	8.28
75°	6.02	7.07	7.71	8.07	8.34	8.55	8.75
90°	5.98	7.22	7.92	8.26	8.42	8.68	9.24
110°	6.03	7.31	8.03	8.46	8.86	9.24	9.74
120°	5.88	7.17	7.94	8.41	8.88	9.40	10.29
135°	5.32	6.58	7.56	8.12	8.54	9.04	10.23
150°	4.44	5.53	6.64	7.54	8.07	8.47	9.41