SILENZIO !!! — ORC Rating

GPH

651.4

OSN

634.4

LOA

8.48 m

Displacement

1542 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6604

Medium

0.8493

High

0.963

Triple Offshore

Low

0.8337

Medium

1.0228

High

1.1438

Boat Specifications

Dimensions

Length overall: 8.48 m
Beam: 2.95 m
Draft: 1.44 m
Displacement: 1542 kg
Crew weight: 354 kg
Wetted surface: 13.89 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

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.

6,42.1,4.717135,52,5.24,60,5.44,75,5.56,90,5.52,110,5.64,120,5.53,135,5.06,141.7,4.752946,150,4.31
8,39.8,5.427684,52,5.97,60,6.11,75,6.2,90,6.23,110,6.44,120,6.38,135,6.04,150,5.34,150.3,5.330223
10,37.6,5.730228,52,6.3,60,6.44,75,6.57,90,6.58,110,6.85,120,6.91,135,6.64,150,6.13,156.5,5.844764
12,36.9,5.827297,52,6.43,60,6.6,75,6.83,90,6.92,110,7.14,120,7.36,135,7.18,150,6.69,165.3,6.172024
14,36.7,5.886934,52,6.5,60,6.69,75,6.99,90,7.21,110,7.41,120,7.76,135,7.76,150,7.18,176.2,6.484256
16,36.8,5.932077,52,6.56,60,6.77,75,7.11,90,7.46,110,7.67,120,8.15,135,8.57,150,7.71,175.7,6.929506
20,37.4,5.979245,52,6.63,60,6.87,75,7.31,90,7.84,110,8.21,120,9.06,135,10.95,142.4,11.157536,150,10.21
24,39.5,5.974408,52,6.61,60,6.89,75,7.4,90,8.12,110,9.07,120,10.19,135,12.68,148.1,13.899168,150,13.63

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.24	5.44	5.56	5.52	5.64	5.53	5.06	4.31
8	5.97	6.11	6.2	6.23	6.44	6.38	6.04	5.34
10	6.3	6.44	6.57	6.58	6.85	6.91	6.64	6.13
12	6.43	6.6	6.83	6.92	7.14	7.36	7.18	6.69
14	6.5	6.69	6.99	7.21	7.41	7.76	7.76	7.18
16	6.56	6.77	7.11	7.46	7.67	8.15	8.57	7.71
20	6.63	6.87	7.31	7.84	8.21	9.06	10.95	10.21
24	6.61	6.89	7.4	8.12	9.07	10.19	12.68	13.63

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.1°	3.5	141.7°	3.73
8	39.8°	4.17	150.3°	4.63
10	37.6°	4.54	156.5°	5.36
12	36.9°	4.66	165.3°	5.97
14	36.7°	4.72	176.2°	6.47
16	36.8°	4.75	175.7°	6.91
20	37.4°	4.75	142.4°	8.84
24	39.5°	4.61	148.1°	11.8

Loading polar chart…