Toermalijn: ORC Rating

GPH

644.6

OSN

624

LOA

11.98 m

Displacement

6156 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6958

Medium

0.9583

High

1.124

Triple Offshore

Low

0.8981

Medium

1.1885

High

1.3501

Boat Specifications

Dimensions

Length overall: 11.98 m
Beam: 3.85 m
Draft: 1.85 m
Displacement: 6156 kg
Crew weight: 676 kg
Wetted surface: 27.88 m²

Sails

Mainsail: 29.53 m²
Genoa: 40.15 m²
Spinnaker: 94.89 m²
Asymmetric spinnaker: 0 m²

Design

Type: Dufour Classic 38
Builder: Dufour Yachts
Designer: Poncin
Year built: 1978

Performance data

Polar CSV

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

6,43.7,4.412372,52,4.92,60,5.21,75,5.45,90,5.4,110,5.41,120,5.29,135,4.82,145.9,4.275051,150,4.09
8,42.4,5.227127,52,5.85,60,6.16,75,6.43,90,6.41,110,6.6,120,6.46,135,5.95,149.9,5.178284,150,5.17
10,42.2,5.898991,52,6.58,60,6.85,75,7.05,90,7.17,110,7.31,120,7.22,135,6.87,150,6.11,150.7,6.077499
12,41.3,6.389231,52,7.02,60,7.22,75,7.38,90,7.53,110,7.7,120,7.64,135,7.4,150,6.92,155.2,6.653613
14,40.2,6.585528,52,7.24,60,7.43,75,7.62,90,7.72,110,8.07,120,8.04,135,7.76,150,7.39,169.6,6.771242
16,40.4,6.723234,52,7.34,60,7.56,75,7.82,90,7.92,110,8.41,120,8.45,135,8.15,150,7.73,180,7.19
20,40.9,6.76057,52,7.38,60,7.63,75,8.09,90,8.4,110,8.81,120,9.18,135,9,150,8.46,180,7.87

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.92	5.21	5.45	5.4	5.41	5.29	4.82	4.09
8	5.85	6.16	6.43	6.41	6.6	6.46	5.95	5.17
10	6.58	6.85	7.05	7.17	7.31	7.22	6.87	6.11
12	7.02	7.22	7.38	7.53	7.7	7.64	7.4	6.92
14	7.24	7.43	7.62	7.72	8.07	8.04	7.76	7.39
16	7.34	7.56	7.82	7.92	8.41	8.45	8.15	7.73
20	7.38	7.63	8.09	8.4	8.81	9.18	9	8.46

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.7°	3.19	145.9°	3.54
8	42.4°	3.86	149.9°	4.48
10	42.2°	4.37	150.7°	5.3
12	41.3°	4.8	155.2°	6.04
14	40.2°	5.03	169.6°	6.66
16	40.4°	5.12	180°	7.19
20	40.9°	5.11	180°	7.87

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°	4.92	5.85	6.58	7.02	7.24	7.34	7.38
60°	5.21	6.16	6.85	7.22	7.43	7.56	7.63
75°	5.45	6.43	7.05	7.38	7.62	7.82	8.09
90°	5.40	6.41	7.17	7.53	7.72	7.92	8.40
110°	5.41	6.60	7.31	7.70	8.07	8.41	8.81
120°	5.29	6.46	7.22	7.64	8.04	8.45	9.18
135°	4.82	5.95	6.87	7.40	7.76	8.15	9.00
150°	4.09	5.17	6.11	6.92	7.39	7.73	8.46