Shellback — ORC Rating

GPH

592.9

OSN

573.7

LOA

12.4 m

Displacement

9100 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.663

Medium

0.9241

High

1.0853

Triple Offshore

Low

0.8634

Medium

1.1521

High

1.3106

Boat Specifications

Dimensions

Length overall: 12.4 m
Beam: 3.92 m
Draft: 2.16 m
Displacement: 9100 kg
Crew weight: 883 kg
Wetted surface: 39.12 m²

Sails

Mainsail: 53.04 m²
Genoa: 39.71 m²
Spinnaker: 124.89 m²
Asymmetric spinnaker: 141.51 m²

Design

Type: Dehler 42
Builder: Dehler
Designer: Judel/Vroelijk
Year built: 2010
Stability index: 122.4

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.

6,45,4.709331,52,5.21,60,5.58,75,5.86,90,5.94,110,6.04,120,5.88,135,5.28,143.3,4.826787,150,4.47
8,43,5.633389,52,6.29,60,6.65,75,6.95,90,7.2,110,7.35,120,7.19,135,6.57,147.5,5.809876,150,5.66
10,42,6.378299,52,7.13,60,7.43,75,7.65,90,7.92,110,8.06,120,7.97,135,7.59,147.8,6.854227,150,6.7
12,41.2,6.937662,52,7.64,60,7.86,75,8.03,90,8.21,110,8.51,120,8.44,135,8.14,149.3,7.571068,150,7.52
14,40,7.11447,52,7.87,60,8.09,75,8.31,90,8.38,110,8.93,120,8.94,135,8.59,150,8.02,161.3,7.55904
16,39.6,7.202991,52,7.96,60,8.2,75,8.52,90,8.65,110,9.22,120,9.49,135,9.11,150,8.42,175.4,7.765012
20,39.4,7.285823,52,8.02,60,8.28,75,8.75,90,9.23,110,9.74,120,10.32,135,10.36,150,9.35,178.1,8.554703

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.21	5.58	5.86	5.94	6.04	5.88	5.28	4.47
8	6.29	6.65	6.95	7.2	7.35	7.19	6.57	5.66
10	7.13	7.43	7.65	7.92	8.06	7.97	7.59	6.7
12	7.64	7.86	8.03	8.21	8.51	8.44	8.14	7.52
14	7.87	8.09	8.31	8.38	8.93	8.94	8.59	8.02
16	7.96	8.2	8.52	8.65	9.22	9.49	9.11	8.42
20	8.02	8.28	8.75	9.23	9.74	10.32	10.36	9.35

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45°	3.33	143.3°	3.87
8	43°	4.12	147.5°	4.9
10	42°	4.74	147.8°	5.8
12	41.2°	5.22	149.3°	6.51
14	40°	5.45	161.3°	7.16
16	39.6°	5.55	175.4°	7.74
20	39.4°	5.63	178.1°	8.55

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