ETHYLENE — ORC Rating

GPH

680.9

OSN

663.2

LOA

9.3 m

Displacement

1532 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5923

Medium

0.8059

High

0.9152

Triple Offshore

Low

0.7723

Medium

0.9936

High

1.1154

Boat Specifications

Dimensions

Length overall: 9.3 m
Beam: 2.09 m
Draft: 1.39 m
Displacement: 1532 kg
Crew weight: 275 kg
Wetted surface: 13.27 m²

Sails

Mainsail: 21.42 m²
Genoa: 9.28 m²
Spinnaker: 42.28 m²
Asymmetric spinnaker: 48.23 m²

Design

Type: Etchells MOD
Builder: Bashford
Designer: Etchells
Year built: 1967

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.

6,43.9,4.205115,52,4.67,60,4.97,75,5.19,90,5.52,110,5.59,120,5.35,135,4.67,144.5,4.176311,150,3.93
8,42,4.978841,52,5.6,60,5.88,75,6.08,90,6.34,110,6.46,120,6.37,135,5.87,148,5.094051,150,4.99
10,40.5,5.523365,52,6.12,60,6.31,75,6.47,90,6.64,110,6.93,120,6.88,135,6.57,150,5.95,150.5,5.928611
12,39.8,5.727052,52,6.31,60,6.51,75,6.75,90,6.85,110,7.35,120,7.42,135,7.08,150,6.58,160,6.214798
14,39.4,5.771718,52,6.38,60,6.6,75,6.97,90,7.19,110,7.65,120,7.97,135,7.66,150,7.05,180,6.41
16,39.8,5.831181,52,6.41,60,6.65,75,7.11,90,7.5,110,7.93,120,8.38,135,8.34,150,7.58,180,6.84
20,39.8,5.909277,52,6.51,60,6.77,75,7.21,90,7.87,110,8.5,120,9.17,135,10.24,150,8.97,180,7.81

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.67	4.97	5.19	5.52	5.59	5.35	4.67	3.93
8	5.6	5.88	6.08	6.34	6.46	6.37	5.87	4.99
10	6.12	6.31	6.47	6.64	6.93	6.88	6.57	5.95
12	6.31	6.51	6.75	6.85	7.35	7.42	7.08	6.58
14	6.38	6.6	6.97	7.19	7.65	7.97	7.66	7.05
16	6.41	6.65	7.11	7.5	7.93	8.38	8.34	7.58
20	6.51	6.77	7.21	7.87	8.5	9.17	10.24	8.97

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	3.03	144.5°	3.4
8	42°	3.7	148°	4.32
10	40.5°	4.2	150.5°	5.16
12	39.8°	4.4	160°	5.84
14	39.4°	4.46	180°	6.41
16	39.8°	4.48	180°	6.84
20	39.8°	4.54	180°	7.81

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