URKESKEN — ORC Rating

GPH

684.8

OSN

663.3

LOA

9.19 m

Displacement

4217 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6598

Medium

0.9106

High

1.0699

Triple Offshore

Low

0.8508

Medium

1.1167

High

1.2632

Boat Specifications

Dimensions

Length overall: 9.19 m
Beam: 3.2 m
Draft: 1.89 m
Displacement: 4217 kg
Crew weight: 400 kg
Wetted surface: 20.81 m²

Sails

Mainsail: 26.86 m²
Genoa: 24.9 m²
Spinnaker: 64.71 m²
Asymmetric spinnaker: 0 m²

Design

Type: ELAN 31
Builder: ELAN
Designer: HUMPHREYS
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.

6,42.3,4.177758,52,4.68,60,4.92,75,5.12,90,5.13,110,5.19,120,5.02,135,4.46,147,3.934799,150,3.81
8,40.5,4.878973,52,5.53,60,5.81,75,6.03,90,6.17,110,6.25,120,6.1,135,5.52,150,4.81,151.7,4.72471
10,40.8,5.548253,52,6.19,60,6.39,75,6.53,90,6.71,110,6.77,120,6.69,135,6.41,150,5.71,150.1,5.710023
12,39.3,5.931457,52,6.52,60,6.67,75,6.8,90,7,110,7.1,120,7.04,135,6.82,150,6.45,159,6.094815
14,37.9,6.108348,52,6.7,60,6.85,75,7,90,7.16,110,7.43,120,7.38,135,7.13,150,6.82,180,6.3
16,37.4,6.193239,52,6.8,60,6.97,75,7.17,90,7.28,110,7.76,120,7.74,135,7.47,150,7.11,180,6.71
20,37.4,6.256179,52,6.87,60,7.07,75,7.44,90,7.68,110,8.15,120,8.44,135,8.22,150,7.77,180,7.29

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.68	4.92	5.12	5.13	5.19	5.02	4.46	3.81
8	5.53	5.81	6.03	6.17	6.25	6.1	5.52	4.81
10	6.19	6.39	6.53	6.71	6.77	6.69	6.41	5.71
12	6.52	6.67	6.8	7	7.1	7.04	6.82	6.45
14	6.7	6.85	7	7.16	7.43	7.38	7.13	6.82
16	6.8	6.97	7.17	7.28	7.76	7.74	7.47	7.11
20	6.87	7.07	7.44	7.68	8.15	8.44	8.22	7.77

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.09	147°	3.3
8	40.5°	3.71	151.7°	4.16
10	40.8°	4.2	150.1°	4.95
12	39.3°	4.59	159°	5.69
14	37.9°	4.82	180°	6.3
16	37.4°	4.92	180°	6.71
20	37.4°	4.97	180°	7.29

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