BELKA — ORC Rating | RegattaPages

GPH

637.5

OSN

618.6

LOA

9.7 m

Displacement

3538 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6325

Medium

0.8589

High

0.9787

Triple Offshore

Low

0.8198

Medium

1.0635

High

1.1937

Boat Specifications

Dimensions

Length overall: 9.7 m
Beam: 3.17 m
Draft: 2.08 m
Displacement: 3538 kg
Crew weight: 603 kg
Wetted surface: 22.59 m²

Sails

Mainsail: 29.91 m²
Genoa: 23.65 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 85.86 m²

Design

Type: Raketa 970
Builder: Raketa Yachts
Designer: M.Tikhonov
Year built: 2009

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.

6,42.8,4.402165,52,4.95,60,5.25,75,5.48,90,5.69,110,5.76,120,5.6,135,5.01,144,4.536369,150,4.24
8,41.2,5.209891,52,5.91,60,6.22,75,6.46,90,6.75,110,6.84,120,6.72,135,6.2,147.5,5.466027,150,5.33
10,40.5,5.904741,52,6.58,60,6.79,75,6.95,90,7.22,110,7.37,120,7.28,135,6.97,148.2,6.389042,150,6.27
12,39,6.292254,52,6.94,60,7.11,75,7.26,90,7.42,110,7.85,120,7.78,135,7.43,150,6.89,150.2,6.879739
14,38.1,6.391887,52,7.09,60,7.29,75,7.54,90,7.61,110,8.24,120,8.35,135,7.94,150,7.24,174,6.374922
16,38.2,6.464281,52,7.14,60,7.37,75,7.76,90,7.94,110,8.52,120,8.93,135,8.51,150,7.56,176.5,6.882838
20,38.6,6.525741,52,7.17,60,7.4,75,7.93,90,8.51,110,9.07,120,9.7,135,10,150,8.55,177,7.590402

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.95	5.25	5.48	5.69	5.76	5.6	5.01	4.24
8	5.91	6.22	6.46	6.75	6.84	6.72	6.2	5.33
10	6.58	6.79	6.95	7.22	7.37	7.28	6.97	6.27
12	6.94	7.11	7.26	7.42	7.85	7.78	7.43	6.89
14	7.09	7.29	7.54	7.61	8.24	8.35	7.94	7.24
16	7.14	7.37	7.76	7.94	8.52	8.93	8.51	7.56
20	7.17	7.4	7.93	8.51	9.07	9.7	10	8.55

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.23	144°	3.67
8	41.2°	3.92	147.5°	4.61
10	40.5°	4.49	148.2°	5.43
12	39°	4.89	150.2°	5.97
14	38.1°	5.03	174°	6.34
16	38.2°	5.08	176.5°	6.87
20	38.6°	5.1	177°	7.58

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