AMETHYST — ORC Rating

GPH

640

OSN

625.5

LOA

8 m

Displacement

1398 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6526

Medium

0.8403

High

0.9448

Triple Offshore

Low

0.8411

Medium

1.0459

High

1.1679

Boat Specifications

Dimensions

Length overall: 8 m
Beam: 2.48 m
Draft: 1.73 m
Displacement: 1398 kg
Crew weight: 356 kg
Wetted surface: 14.63 m²

Sails

Mainsail: 26.35 m²
Genoa: 14.06 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.

6,42.8,4.6066,52,5.16,60,5.48,75,5.77,90,5.81,110,5.91,120,5.75,135,5.1,144,4.598173,150,4.3
8,42,5.530551,52,6.12,60,6.33,75,6.48,90,6.59,110,6.75,120,6.66,135,6.28,147,5.592184,150,5.41
10,39.8,5.805149,52,6.45,60,6.66,75,6.89,90,6.93,110,7.36,120,7.35,135,6.92,150,6.31,150.8,6.254854
12,39.4,5.888187,52,6.54,60,6.77,75,7.19,90,7.44,110,7.74,120,8.08,135,7.62,150,6.84,151,6.791523
14,39.8,5.948325,52,6.57,60,6.82,75,7.32,90,7.86,110,8.14,120,8.59,135,8.51,150,7.36,176,6.455726
16,39.8,6.000389,52,6.65,60,6.89,75,7.39,90,8.07,110,8.5,120,9.07,135,9.57,144.2,8.741606,150,8.19
20,41.8,6.009583,52,6.62,60,6.93,75,7.6,90,8.19,110,9.46,120,10,135,11.4,141.5,11.60223,150,10.49

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.16	5.48	5.77	5.81	5.91	5.75	5.1	4.3
8	6.12	6.33	6.48	6.59	6.75	6.66	6.28	5.41
10	6.45	6.66	6.89	6.93	7.36	7.35	6.92	6.31
12	6.54	6.77	7.19	7.44	7.74	8.08	7.62	6.84
14	6.57	6.82	7.32	7.86	8.14	8.59	8.51	7.36
16	6.65	6.89	7.39	8.07	8.5	9.07	9.57	8.19
20	6.62	6.93	7.6	8.19	9.46	10	11.4	10.49

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.38	144°	3.72
8	42°	4.11	147°	4.69
10	39.8°	4.46	150.8°	5.46
12	39.4°	4.55	151°	5.94
14	39.8°	4.57	176°	6.44
16	39.8°	4.61	144.2°	7.09
20	41.8°	4.48	141.5°	9.08

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