SIRAH — ORC Rating | RegattaPages

GPH

628.1

OSN

608.3

LOA

14.072 m

Displacement

13810 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6452

Medium

0.8715

High

0.9961

Triple Offshore

Low

0.8284

Medium

1.083

High

1.2069

Boat Specifications

Dimensions

Length overall: 14.072 m
Beam: 4.09 m
Draft: 2.4 m
Displacement: 13810 kg
Crew weight: 640 kg
Wetted surface: 42.82 m²

Sails

Mainsail: 49.29 m²
Genoa: 51.24 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 148.22 m²

Design

Type: WIND 46
Builder: NAUTA
Designer: G.FRERS
Year built: 1977
Stability index: 130.4

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.

6,43.2,4.62297,52,5.14,60,5.41,75,5.57,90,5.52,110,5.62,120,5.47,135,4.92,144.2,4.450944,150,4.17
8,40.8,5.442572,52,6.09,60,6.34,75,6.52,90,6.61,110,6.79,120,6.64,135,6.12,147.5,5.45417,150,5.31
10,39.9,6.035206,52,6.76,60,6.99,75,7.17,90,7.3,110,7.52,120,7.44,135,7.06,147.5,6.414578,150,6.25
12,39.6,6.411311,52,7.15,60,7.36,75,7.56,90,7.64,110,7.92,120,7.91,135,7.66,147.8,7.13785,150,6.98
14,39.4,6.587005,52,7.35,60,7.57,75,7.79,90,7.86,110,8.2,120,8.25,135,8.06,148.8,7.540647,150,7.45
16,39.4,6.716416,52,7.45,60,7.68,75,7.94,90,8.06,110,8.4,120,8.53,135,8.41,150,7.78,171.2,6.941715
20,39.4,6.819944,52,7.55,60,7.79,75,8.12,90,8.35,110,8.67,120,8.98,135,9.02,150,8.31,176.6,7.733612

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.14	5.41	5.57	5.52	5.62	5.47	4.92	4.17
8	6.09	6.34	6.52	6.61	6.79	6.64	6.12	5.31
10	6.76	6.99	7.17	7.3	7.52	7.44	7.06	6.25
12	7.15	7.36	7.56	7.64	7.92	7.91	7.66	6.98
14	7.35	7.57	7.79	7.86	8.2	8.25	8.06	7.45
16	7.45	7.68	7.94	8.06	8.4	8.53	8.41	7.78
20	7.55	7.79	8.12	8.35	8.67	8.98	9.02	8.31

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.2°	3.37	144.2°	3.61
8	40.8°	4.12	147.5°	4.6
10	39.9°	4.63	147.5°	5.41
12	39.6°	4.94	147.8°	6.04
14	39.4°	5.09	148.8°	6.45
16	39.4°	5.19	171.2°	6.86
20	39.4°	5.27	176.6°	7.72

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