Fourth Dimension — ORC Rating

GPH

609.3

OSN

591.8

LOA

12.05 m

Displacement

8134 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7376

Medium

1.012

High

1.1668

Triple Offshore

Low

0.9574

Medium

1.2556

High

1.4058

Boat Specifications

Dimensions

Length overall: 12.05 m
Beam: 3.88 m
Draft: 2.12 m
Displacement: 8134 kg
Crew weight: 787 kg
Wetted surface: 33.05 m²

Sails

Mainsail: 46.57 m²
Genoa: 42.16 m²
Spinnaker: 127.49 m²
Asymmetric spinnaker: 95.37 m²

Design

Type: Dufour 40 Perf
Builder: Dufour
Designer: Dufour
Year built: 2002

Velocity Prediction

Polar CSV

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

6,43.7,4.661346,52,5.22,60,5.57,75,5.86,90,5.8,110,5.85,120,5.72,135,5.2,140.1,4.940266,150,4.37
8,42,5.490182,52,6.2,60,6.56,75,6.87,90,6.9,110,7.09,120,6.97,135,6.41,149,5.529842,150,5.47
10,41.8,6.237625,52,6.97,60,7.25,75,7.45,90,7.58,110,7.76,120,7.69,135,7.36,148.1,6.643331,150,6.51
12,41.2,6.685141,52,7.37,60,7.59,75,7.78,90,7.92,110,8.14,120,8.11,135,7.86,150,7.36,155.2,7.09425
14,40.5,6.812151,52,7.52,60,7.76,75,7.99,90,8.09,110,8.41,120,8.52,135,8.25,150,7.83,167.5,7.221171
16,40.3,6.870614,52,7.59,60,7.82,75,8.15,90,8.33,110,8.75,120,8.92,135,8.69,150,8.2,180,7.6
20,40.7,6.885323,52,7.61,60,7.86,75,8.28,90,8.74,110,9.16,120,9.57,135,9.66,150,9.03,180,8.34

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.22	5.57	5.86	5.8	5.85	5.72	5.2	4.37
8	6.2	6.56	6.87	6.9	7.09	6.97	6.41	5.47
10	6.97	7.25	7.45	7.58	7.76	7.69	7.36	6.51
12	7.37	7.59	7.78	7.92	8.14	8.11	7.86	7.36
14	7.52	7.76	7.99	8.09	8.41	8.52	8.25	7.83
16	7.59	7.82	8.15	8.33	8.75	8.92	8.69	8.2
20	7.61	7.86	8.28	8.74	9.16	9.57	9.66	9.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.7°	3.37	140.1°	3.79
8	42°	4.08	149°	4.74
10	41.8°	4.65	148.1°	5.64
12	41.2°	5.03	155.2°	6.44
14	40.5°	5.18	167.5°	7.05
16	40.3°	5.24	180°	7.6
20	40.7°	5.22	180°	8.34

Loading polar chart…