Baltas: ORC Rating

GPH

604.9

OSN

587.7

LOA

11.97 m

Displacement

8144 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.748

Medium

1.0192

High

1.1816

Triple Offshore

Low

0.9681

Medium

1.262

High

1.4205

Boat Specifications

Dimensions

Length overall: 11.97 m
Beam: 3.79 m
Draft: 1.97 m
Displacement: 8144 kg
Crew weight: 850 kg
Wetted surface: 33.92 m²

Sails

Mainsail: 50.43 m²
Genoa: 45.86 m²
Spinnaker: 110.88 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dehler 39 SQ
Builder: Dehler
Designer: Judel/Vrolijk
Year built: 1999

Performance data

Polar CSV

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

6,43.6,4.860725,52,5.4,60,5.71,75,5.97,90,5.92,110,5.78,120,5.62,135,5.09,144.5,4.569376,150,4.3
8,42.3,5.705547,52,6.4,60,6.75,75,7,90,6.98,110,7.02,120,6.85,135,6.27,149.2,5.460092,150,5.42
10,42.1,6.442258,52,7.13,60,7.37,75,7.54,90,7.59,110,7.69,120,7.59,135,7.22,150,6.41,150.8,6.357956
12,41.3,6.841801,52,7.47,60,7.67,75,7.84,90,7.91,110,8.09,120,8.02,135,7.74,150,7.24,155.3,6.956459
14,40.6,6.980377,52,7.64,60,7.84,75,8.07,90,8.15,110,8.47,120,8.42,135,8.12,150,7.72,169.7,7.084161
16,40.3,7.05418,52,7.71,60,7.94,75,8.27,90,8.43,110,8.81,120,8.87,135,8.53,150,8.08,180,7.53
20,40.8,7.146678,52,7.76,60,8.02,75,8.49,90,8.92,110,9.24,120,9.65,135,9.49,150,8.88,180,8.24

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.4	5.71	5.97	5.92	5.78	5.62	5.09	4.3
8	6.4	6.75	7	6.98	7.02	6.85	6.27	5.42
10	7.13	7.37	7.54	7.59	7.69	7.59	7.22	6.41
12	7.47	7.67	7.84	7.91	8.09	8.02	7.74	7.24
14	7.64	7.84	8.07	8.15	8.47	8.42	8.12	7.72
16	7.71	7.94	8.27	8.43	8.81	8.87	8.53	8.08
20	7.76	8.02	8.49	8.92	9.24	9.65	9.49	8.88

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.52	144.5°	3.72
8	42.3°	4.22	149.2°	4.69
10	42.1°	4.78	150.8°	5.55
12	41.3°	5.14	155.3°	6.32
14	40.6°	5.3	169.7°	6.97
16	40.3°	5.38	180°	7.53
20	40.8°	5.41	180°	8.24

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°	5.40	6.40	7.13	7.47	7.64	7.71	7.76
60°	5.71	6.75	7.37	7.67	7.84	7.94	8.02
75°	5.97	7.00	7.54	7.84	8.07	8.27	8.49
90°	5.92	6.98	7.59	7.91	8.15	8.43	8.92
110°	5.78	7.02	7.69	8.09	8.47	8.81	9.24
120°	5.62	6.85	7.59	8.02	8.42	8.87	9.65
135°	5.09	6.27	7.22	7.74	8.12	8.53	9.49
150°	4.30	5.42	6.41	7.24	7.72	8.08	8.88