EMBER SEA — ORC Rating

GPH

475.4

OSN

463.9

LOA

17.051 m

Displacement

11244 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.9607

Medium

1.2795

High

1.4718

Triple Offshore

Low

1.2526

Medium

1.5948

High

1.8032

Boat Specifications

Dimensions

Length overall: 17.051 m
Beam: 4.48 m
Draft: 3.02 m
Displacement: 11244 kg
Crew weight: 940 kg
Wetted surface: 45.12 m²

Sails

Mainsail: 102.49 m²
Genoa: 65.11 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 250.31 m²

Design

Type: BRENTA 55
Builder: HOLLAND COMPOSITES
Designer: LUCA BRENTA
Year built: 1998

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.

6,43.9,6.425637,52,7.11,60,7.58,75,7.98,90,7.88,110,7.52,120,7.25,135,6.41,141.3,5.91981,150,5.34
8,41.4,7.478892,52,8.43,60,8.8,75,9.07,90,9.05,110,8.98,120,8.86,135,8.11,139.1,7.766056,150,6.78
10,40.1,8.013895,52,8.96,60,9.26,75,9.57,90,9.61,110,9.66,120,9.66,135,9.21,144.7,8.601491,150,8.11
12,39.4,8.282285,52,9.18,60,9.48,75,9.96,90,10.15,110,10.13,120,10.38,135,9.92,150,9.11,152,8.913326
14,38.7,8.418432,52,9.31,60,9.64,75,10.23,90,10.65,110,10.59,120,10.91,135,10.75,150,9.72,152.3,9.4986
16,37.7,8.556368,52,9.43,60,9.75,75,10.44,90,11.05,110,11.02,120,11.41,135,11.69,149.2,10.442862,150,10.36
20,37.5,8.709864,52,9.67,60,10.1,75,10.72,90,11.54,110,12.26,120,12.59,135,13.65,144.7,12.938995,150,12.19

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.11	7.58	7.98	7.88	7.52	7.25	6.41	5.34
8	8.43	8.8	9.07	9.05	8.98	8.86	8.11	6.78
10	8.96	9.26	9.57	9.61	9.66	9.66	9.21	8.11
12	9.18	9.48	9.96	10.15	10.13	10.38	9.92	9.11
14	9.31	9.64	10.23	10.65	10.59	10.91	10.75	9.72
16	9.43	9.75	10.44	11.05	11.02	11.41	11.69	10.36
20	9.67	10.1	10.72	11.54	12.26	12.59	13.65	12.19

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.9°	4.63	141.3°	4.62
8	41.4°	5.61	139.1°	5.87
10	40.1°	6.13	144.7°	7.02
12	39.4°	6.4	152°	7.87
14	38.7°	6.57	152.3°	8.41
16	37.7°	6.77	149.2°	8.97
20	37.5°	6.91	144.7°	10.56

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