GLAFKI II — ORC Rating

GPH

687.5

OSN

668.3

LOA

9.5 m

Displacement

2917 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6691

Medium

0.9073

High

1.0344

Triple Offshore

Low

0.8606

Medium

1.1072

High

1.2309

Boat Specifications

Dimensions

Length overall: 9.5 m
Beam: 3.13 m
Draft: 1.8 m
Displacement: 2917 kg
Crew weight: 457 kg
Wetted surface: 17.42 m²

Sails

Mainsail: 27.82 m²
Genoa: 20.47 m²
Spinnaker: 48.43 m²
Asymmetric spinnaker: 0 m²

Design

Type: MISTRAL 31
Builder: MISTRAL YACHTS
Designer: R.HUMPHREYS
Year built: 1979

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.

6,41.6,4.27923,52,4.83,60,5.08,75,5.27,90,5.18,110,5.15,120,4.96,135,4.47,147.9,3.883738,150,3.8
8,40.9,5.04066,52,5.7,60,5.94,75,6.1,90,6.13,110,6.16,120,6,135,5.46,150,4.77,152.4,4.660329
10,40.1,5.647639,52,6.21,60,6.36,75,6.48,90,6.59,110,6.63,120,6.54,135,6.24,150,5.63,152.7,5.514185
12,38.9,5.88505,52,6.44,60,6.59,75,6.74,90,6.88,110,7.01,120,6.92,135,6.65,150,6.29,165.2,5.802508
14,38.4,5.958963,52,6.54,60,6.72,75,6.95,90,7.04,110,7.37,120,7.3,135,7.01,150,6.67,180,6.21
16,38.4,5.984483,52,6.58,60,6.78,75,7.11,90,7.27,110,7.68,120,7.67,135,7.39,150,7.01,180,6.59
20,39,6.022035,52,6.58,60,6.8,75,7.23,90,7.61,110,8.01,120,8.32,135,8.15,150,7.71,180,7.26

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.83	5.08	5.27	5.18	5.15	4.96	4.47	3.8
8	5.7	5.94	6.1	6.13	6.16	6	5.46	4.77
10	6.21	6.36	6.48	6.59	6.63	6.54	6.24	5.63
12	6.44	6.59	6.74	6.88	7.01	6.92	6.65	6.29
14	6.54	6.72	6.95	7.04	7.37	7.3	7.01	6.67
16	6.58	6.78	7.11	7.27	7.68	7.67	7.39	7.01
20	6.58	6.8	7.23	7.61	8.01	8.32	8.15	7.71

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41.6°	3.2	147.9°	3.29
8	40.9°	3.81	152.4°	4.13
10	40.1°	4.32	152.7°	4.9
12	38.9°	4.58	165.2°	5.61
14	38.4°	4.67	180°	6.21
16	38.4°	4.69	180°	6.59
20	39°	4.68	180°	7.26

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