SILENZIO !!! — ORC Rating

GPH

647.3

OSN

629.7

LOA

8.48 m

Displacement

1542 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6487

Medium

0.8498

High

0.967

Triple Offshore

Low

0.8273

Medium

1.0351

High

1.1656

Boat Specifications

Dimensions

Length overall: 8.48 m
Beam: 2.95 m
Draft: 1.44 m
Displacement: 1542 kg
Crew weight: 377 kg
Wetted surface: 13.85 m²

Sails

Mainsail: 24.26 m²
Genoa: 20.08 m²
Spinnaker: 73.17 m²
Asymmetric spinnaker: 0 m²

Design

Type: Banner 28
Builder: Fiberblade
Designer: I. Nielsen
Year built: 1978
Stability index: 96.7

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.

6,42.9,4.586762,52,5.1,60,5.35,75,5.59,90,5.58,110,5.71,120,5.59,135,5.07,141.7,4.752946,150,4.31
8,41.5,5.394177,52,5.95,60,6.13,75,6.25,90,6.35,110,6.52,120,6.46,135,6.13,148.7,5.453744,150,5.38
10,39,5.790418,52,6.34,60,6.5,75,6.65,90,6.68,110,7.08,120,7.08,135,6.75,150,6.2,155.9,5.937552
12,37.8,5.884921,52,6.5,60,6.73,75,7.02,90,7.1,110,7.42,120,7.66,135,7.34,150,6.79,162.8,6.301828
14,37.5,5.94943,52,6.58,60,6.84,75,7.26,90,7.51,110,7.73,120,8.1,135,8.03,150,7.34,173.6,6.570951
16,37.6,5.970039,52,6.63,60,6.92,75,7.39,90,7.85,110,8.03,120,8.5,135,8.91,150,7.95,173,7.082794
20,38.2,6.031633,52,6.73,60,7.02,75,7.51,90,8.18,110,8.61,120,9.37,135,11.05,141.7,11.430008,150,10.36

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.1	5.35	5.59	5.58	5.71	5.59	5.07	4.31
8	5.95	6.13	6.25	6.35	6.52	6.46	6.13	5.38
10	6.34	6.5	6.65	6.68	7.08	7.08	6.75	6.2
12	6.5	6.73	7.02	7.1	7.42	7.66	7.34	6.79
14	6.58	6.84	7.26	7.51	7.73	8.1	8.03	7.34
16	6.63	6.92	7.39	7.85	8.03	8.5	8.91	7.95
20	6.73	7.02	7.51	8.18	8.61	9.37	11.05	10.36

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.36	141.7°	3.73
8	41.5°	4.04	148.7°	4.66
10	39°	4.5	155.9°	5.42
12	37.8°	4.65	162.8°	6.02
14	37.5°	4.72	173.6°	6.53
16	37.6°	4.73	173°	7.03
20	38.2°	4.74	141.7°	8.97

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