ENASTROS — ORC Rating

GPH

791.8

OSN

763.1

LOA

9.363 m

Displacement

4355 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5586

Medium

0.7868

High

0.9421

Triple Offshore

Low

0.7198

Medium

0.9719

High

1.1204

Boat Specifications

Dimensions

Length overall: 9.363 m
Beam: 3.17 m
Draft: 1.76 m
Displacement: 4355 kg
Crew weight: 433 kg
Wetted surface: 20.38 m²

Sails

Mainsail: 16.97 m²
Genoa: 30.14 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: DUFOUR 31
Builder: DUFOUR
Designer: Michel Dufour
Year built: 1973

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.

6,43.4,3.77112,52,4.18,60,4.41,75,4.6,90,4.55,110,4.2,120,3.94,135,3.48,150,2.97,167.3,2.675456
8,41.8,4.413288,52,4.94,60,5.2,75,5.43,90,5.38,110,5.06,120,4.81,135,4.37,150,3.85,168.1,3.515553
10,41.9,4.957601,52,5.58,60,5.83,75,6.01,90,6.01,110,5.81,120,5.58,135,5.09,150,4.58,169.4,4.232221
12,42.1,5.458399,52,5.98,60,6.16,75,6.31,90,6.32,110,6.24,120,6.11,135,5.75,150,5.22,170.1,4.862404
14,41.1,5.679681,52,6.18,60,6.35,75,6.51,90,6.56,110,6.51,120,6.42,135,6.17,150,5.81,170.1,5.461323
16,40.7,5.77734,52,6.29,60,6.47,75,6.67,90,6.78,110,6.74,120,6.65,135,6.44,150,6.19,172.5,5.940825
20,41.3,5.816862,52,6.33,60,6.54,75,6.9,90,7.09,110,7.21,120,7.13,135,6.88,150,6.65,175.5,6.479976

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.18	4.41	4.6	4.55	4.2	3.94	3.48	2.97
8	4.94	5.2	5.43	5.38	5.06	4.81	4.37	3.85
10	5.58	5.83	6.01	6.01	5.81	5.58	5.09	4.58
12	5.98	6.16	6.31	6.32	6.24	6.11	5.75	5.22
14	6.18	6.35	6.51	6.56	6.51	6.42	6.17	5.81
16	6.29	6.47	6.67	6.78	6.74	6.65	6.44	6.19
20	6.33	6.54	6.9	7.09	7.21	7.13	6.88	6.65

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.4°	2.74	167.3°	2.61
8	41.8°	3.29	168.1°	3.44
10	41.9°	3.69	169.4°	4.16
12	42.1°	4.05	170.1°	4.79
14	41.1°	4.28	170.1°	5.38
16	40.7°	4.38	172.5°	5.89
20	41.3°	4.37	175.5°	6.46

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