SERIFA 2 — ORC Rating

GPH

649.1

OSN

634

LOA

9.3 m

Displacement

2304 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6213

Medium

0.8432

High

0.9686

Triple Offshore

Low

0.8083

Medium

1.0413

High

1.1735

Boat Specifications

Dimensions

Length overall: 9.3 m
Beam: 2.81 m
Draft: 2.19 m
Displacement: 2304 kg
Crew weight: 350 kg
Wetted surface: 17.98 m²

Sails

Mainsail: 28.11 m²
Genoa: 15.53 m²
Spinnaker: 52 m²
Asymmetric spinnaker: 0 m²

Design

Type: ROSS 930
Designer: ROS
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.

6,42,4.454044,52,5.03,60,5.34,75,5.63,90,5.57,110,5.64,120,5.45,135,4.86,138,4.696258,150,4.03
8,41.2,5.17002,52,5.87,60,6.19,75,6.46,90,6.54,110,6.66,120,6.58,135,6.05,149,5.121521,150,5.07
10,40.9,5.860924,52,6.52,60,6.72,75,6.88,90,6.96,110,7.16,120,7.11,135,6.82,149,6.148158,150,6.09
12,39.8,6.091501,52,6.75,60,6.95,75,7.17,90,7.24,110,7.63,120,7.61,135,7.28,150,6.83,157.5,6.526825
14,39.4,6.172891,52,6.83,60,7.05,75,7.39,90,7.59,110,7.94,120,8.21,135,7.82,150,7.26,180,6.65
16,39.4,6.211714,52,6.86,60,7.1,75,7.52,90,7.92,110,8.25,120,8.67,135,8.44,150,7.76,180,7.09
20,39.2,6.323034,52,6.97,60,7.21,75,7.63,90,8.31,110,8.78,120,9.38,135,10.13,150,9.02,180,8.03

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.03	5.34	5.63	5.57	5.64	5.45	4.86	4.03
8	5.87	6.19	6.46	6.54	6.66	6.58	6.05	5.07
10	6.52	6.72	6.88	6.96	7.16	7.11	6.82	6.09
12	6.75	6.95	7.17	7.24	7.63	7.61	7.28	6.83
14	6.83	7.05	7.39	7.59	7.94	8.21	7.82	7.26
16	6.86	7.1	7.52	7.92	8.25	8.67	8.44	7.76
20	6.97	7.21	7.63	8.31	8.78	9.38	10.13	9.02

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.31	138°	3.49
8	41.2°	3.89	149°	4.39
10	40.9°	4.43	149°	5.27
12	39.8°	4.68	157.5°	6.03
14	39.4°	4.77	180°	6.65
16	39.4°	4.8	180°	7.09
20	39.2°	4.9	180°	8.03

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