AMETHYST — ORC Rating

GPH

635

OSN

619.9

LOA

8 m

Displacement

1398 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7424

Medium

0.956

High

1.0791

Triple Offshore

Low

0.9541

Medium

1.1855

High

1.3272

Boat Specifications

Dimensions

Length overall: 8 m
Beam: 2.48 m
Draft: 1.73 m
Displacement: 1398 kg
Crew weight: 356 kg
Wetted surface: 14.64 m²

Sails

Mainsail: 27.91 m²
Genoa: 14.12 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 61.24 m²

Design

Type: Saphire 27
Builder: Delphia
Designer: Fontana Maletto
Year built: 2012

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.

6,42.4,4.685456,52,5.25,60,5.55,75,5.79,90,5.83,110,5.9,120,5.73,135,5.08,144,4.585812,150,4.29
8,41.2,5.595317,52,6.2,60,6.39,75,6.52,90,6.6,110,6.76,120,6.67,135,6.27,147,5.568337,150,5.4
10,39.1,5.850166,52,6.49,60,6.69,75,6.93,90,6.97,110,7.35,120,7.34,135,6.92,150,6.304665
12,38.6,5.937145,52,6.58,60,6.8,75,7.2,90,7.48,110,7.75,120,8.07,135,7.61,150,6.85,151.3,6.771961
14,38.5,5.992782,52,6.62,60,6.86,75,7.34,90,7.87,110,8.15,120,8.57,135,8.48,150,7.36,176.8,6.450057
16,38.9,6.077792,52,6.71,60,6.95,75,7.42,90,8.07,110,8.51,120,9.05,135,9.53,144.4,8.695109,150,8.16
20,40.8,6.129498,52,6.71,60,7.01,75,7.65,90,8.23,110,9.47,120,10,135,11.35,140.8,11.458885,150,10.26

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.25	5.55	5.79	5.83	5.9	5.73	5.08	4.29
8	6.2	6.39	6.52	6.6	6.76	6.67	6.27	5.4
10	6.49	6.69	6.93	6.97	7.35	7.34	6.92	6.3
12	6.58	6.8	7.2	7.48	7.75	8.07	7.61	6.85
14	6.62	6.86	7.34	7.87	8.15	8.57	8.48	7.36
16	6.71	6.95	7.42	8.07	8.51	9.05	9.53	8.16
20	6.71	7.01	7.65	8.23	9.47	10	11.35	10.26

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.46	144°	3.71
8	41.2°	4.21	147°	4.67
10	39.1°	4.54	150°	5.46
12	38.6°	4.64	151.3°	5.94
14	38.5°	4.69	176.8°	6.44
16	38.9°	4.73	144.4°	7.07
20	40.8°	4.64	140.8°	8.88

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