NATASSA — ORC Rating | RegattaPages

GPH

713.1

OSN

691.2

LOA

9.25 m

Displacement

4255 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.637

Medium

0.8707

High

1.0126

Triple Offshore

Low

0.8202

Medium

1.0713

High

1.2041

Boat Specifications

Dimensions

Length overall: 9.25 m
Beam: 3.22 m
Draft: 1.81 m
Displacement: 4255 kg
Crew weight: 510 kg
Wetted surface: 21.5 m²

Sails

Mainsail: 21.43 m²
Genoa: 31.88 m²
Spinnaker: 63.89 m²
Asymmetric spinnaker: 0 m²

Design

Type: FEELING 920
Builder: KIRIE
Designer: PH. HARLE
Year built: 1983

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.

6,43.5,4.066865,52,4.54,60,4.8,75,5,90,4.95,110,4.9,120,4.76,135,4.35,147.5,3.829776,150,3.73
8,41.8,4.748644,52,5.35,60,5.65,75,5.89,90,5.85,110,5.95,120,5.8,135,5.32,150,4.69,151.3,4.628647
10,41.7,5.343954,52,5.96,60,6.18,75,6.34,90,6.41,110,6.51,120,6.44,135,6.14,150,5.51,152.7,5.390397
12,40.6,5.755518,52,6.29,60,6.45,75,6.59,90,6.71,110,6.84,120,6.79,135,6.58,150,6.2,158.6,5.86431
14,39.5,5.88369,52,6.46,60,6.62,75,6.79,90,6.85,110,7.14,120,7.11,135,6.89,150,6.59,180,6.07
16,39.3,5.957302,52,6.52,60,6.7,75,6.94,90,7.05,110,7.42,120,7.44,135,7.21,150,6.87,180,6.48
20,40,5.991819,52,6.54,60,6.75,75,7.11,90,7.41,110,7.73,120,8,135,7.87,150,7.48,180,7.05

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.54	4.8	5	4.95	4.9	4.76	4.35	3.73
8	5.35	5.65	5.89	5.85	5.95	5.8	5.32	4.69
10	5.96	6.18	6.34	6.41	6.51	6.44	6.14	5.51
12	6.29	6.45	6.59	6.71	6.84	6.79	6.58	6.2
14	6.46	6.62	6.79	6.85	7.14	7.11	6.89	6.59
16	6.52	6.7	6.94	7.05	7.42	7.44	7.21	6.87
20	6.54	6.75	7.11	7.41	7.73	8	7.87	7.48

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.95	147.5°	3.23
8	41.8°	3.54	151.3°	4.06
10	41.7°	3.99	152.7°	4.79
12	40.6°	4.37	158.6°	5.46
14	39.5°	4.54	180°	6.07
16	39.3°	4.61	180°	6.48
20	40°	4.59	180°	7.05

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