Thomahax — ORC Rating

GPH

608.5

OSN

595.2

LOA

11.8 m

Displacement

9560 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7793

Medium

1.016

High

1.1544

Triple Offshore

Low

0.9962

Medium

1.2384

High

1.362

Boat Specifications

Dimensions

Length overall: 11.8 m
Beam: 3.79 m
Draft: 2.12 m
Displacement: 9560 kg
Crew weight: 600 kg
Wetted surface: 33.29 m²

Sails

Mainsail: 55.75 m²
Genoa: 54.4 m²
Spinnaker: 121.83 m²
Asymmetric spinnaker: 142.37 m²

Design

Type: Dehler 39
Builder: Dehler
Designer: Van der Stadt
Year built: 2001

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.

6,41.7,4.942153,52,5.53,60,5.8,75,6.03,90,6,110,5.98,120,5.83,135,5.32,145.5,4.780821,150,4.55
8,40.5,5.694327,52,6.45,60,6.71,75,6.89,90,6.93,110,7.02,120,6.9,135,6.39,150,5.58,150.8,5.53314
10,40.8,6.31444,52,6.95,60,7.13,75,7.27,90,7.32,110,7.47,120,7.41,135,7.13,150,6.49,151.8,6.399612
12,39.8,6.534046,52,7.16,60,7.33,75,7.49,90,7.55,110,7.78,120,7.75,135,7.52,150,7.14,158.8,6.778761
14,39.1,6.636201,52,7.26,60,7.43,75,7.66,90,7.77,110,8,120,8.09,135,7.86,150,7.51,180,6.93
16,38.5,6.670005,52,7.31,60,7.49,75,7.77,90,7.98,110,8.18,120,8.42,135,8.24,150,7.83,180,7.36
20,37.9,6.729321,52,7.35,60,7.55,75,7.87,90,8.28,110,8.49,120,8.8,135,8.97,150,8.55,180,8

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.53	5.8	6.03	6	5.98	5.83	5.32	4.55
8	6.45	6.71	6.89	6.93	7.02	6.9	6.39	5.58
10	6.95	7.13	7.27	7.32	7.47	7.41	7.13	6.49
12	7.16	7.33	7.49	7.55	7.78	7.75	7.52	7.14
14	7.26	7.43	7.66	7.77	8	8.09	7.86	7.51
16	7.31	7.49	7.77	7.98	8.18	8.42	8.24	7.83
20	7.35	7.55	7.87	8.28	8.49	8.8	8.97	8.55

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.7°	3.69	145.5°	3.94
8	40.5°	4.33	150.8°	4.83
10	40.8°	4.78	151.8°	5.64
12	39.8°	5.02	158.8°	6.32
14	39.1°	5.15	180°	6.93
16	38.5°	5.22	180°	7.36
20	37.9°	5.31	180°	8

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