Double Down — ORC Rating

GPH

562.8

OSN

551.7

LOA

9.388 m

Displacement

1741 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7572

Medium

0.9521

High

1.1181

Triple Offshore

Low

0.9669

Medium

1.1767

High

1.3445

Boat Specifications

Dimensions

Length overall: 9.388 m
Beam: 2.99 m
Draft: 2.12 m
Displacement: 1741 kg
Crew weight: 400 kg
Wetted surface: 15.96 m²

Sails

Mainsail: 34.91 m²
Genoa: 27.32 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 106.42 m²

Design

Type: Henderson 30
Builder: SOCA
Designer: Glen Henderson
Year built: 1997
Stability index: 111.7

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.

6,42.6,5.529162,52,6.19,60,6.49,75,6.67,90,6.8,110,6.68,120,6.44,135,5.83,143.3,5.300735,150,4.91
8,39.6,6.086852,52,6.78,60,7,75,7.26,90,7.4,110,7.46,120,7.36,135,7.02,147.3,6.369497,150,6.19
10,38.4,6.303485,52,6.98,60,7.22,75,7.64,90,7.92,110,8.27,120,8.07,135,7.91,150,7.04,152.3,6.900885
12,37.5,6.4032,52,7.09,60,7.37,75,7.87,90,8.34,110,8.85,120,9.01,135,8.96,149.8,7.91415,150,7.9
14,36.4,6.497752,52,7.22,60,7.48,75,8.02,90,8.62,110,9.35,120,9.83,135,9.97,146,9.251692,150,8.86
16,36.6,6.564381,52,7.36,60,7.7,75,8.14,90,8.82,110,9.85,120,10.48,135,10.77,143.8,10.880337,150,10.14
20,37.5,6.579666,52,7.39,60,7.79,75,8.52,90,9.13,110,10.56,120,11.64,135,12.97,148.2,13.742911,150,13.49

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.19	6.49	6.67	6.8	6.68	6.44	5.83	4.91
8	6.78	7	7.26	7.4	7.46	7.36	7.02	6.19
10	6.98	7.22	7.64	7.92	8.27	8.07	7.91	7.04
12	7.09	7.37	7.87	8.34	8.85	9.01	8.96	7.9
14	7.22	7.48	8.02	8.62	9.35	9.83	9.97	8.86
16	7.36	7.7	8.14	8.82	9.85	10.48	10.77	10.14
20	7.39	7.79	8.52	9.13	10.56	11.64	12.97	13.49

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.6°	4.07	143.3°	4.25
8	39.6°	4.69	147.3°	5.36
10	38.4°	4.94	152.3°	6.11
12	37.5°	5.08	149.8°	6.84
14	36.4°	5.23	146°	7.67
16	36.6°	5.27	143.8°	8.78
20	37.5°	5.22	148.2°	11.68

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