BLACK SHADOW SEMI — ORC Rating

GPH

682.3

OSN

662.7

LOA

10.826 m

Displacement

7172 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6729

Medium

0.8996

High

1.0431

Triple Offshore

Low

0.8622

Medium

1.1169

High

1.2503

Boat Specifications

Dimensions

Length overall: 10.826 m
Beam: 3.49 m
Draft: 2.04 m
Displacement: 7172 kg
Crew weight: 628 kg
Wetted surface: 27.22 m²

Sails

Mainsail: 27.31 m²
Genoa: 41.23 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 89.66 m²

Design

Type: CONTESSA 35
Builder: J.ROGERS
Designer: D.PETERSON
Year built: 1974

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.

6,42.3,4.24536,52,4.73,60,4.96,75,5.14,90,5.12,110,5.2,120,5.05,135,4.6,146.5,4.089289,150,3.94
8,40.4,4.911112,52,5.55,60,5.82,75,6.04,90,6.17,110,6.27,120,6.1,135,5.58,147.8,5.010676,150,4.9
10,40.7,5.553106,52,6.25,60,6.46,75,6.6,90,6.78,110,6.85,120,6.76,135,6.44,146.5,5.91208,150,5.7
12,40.3,6.031455,52,6.6,60,6.76,75,6.89,90,7.08,110,7.18,120,7.11,135,6.9,147.9,6.468963,150,6.33
14,39.1,6.210969,52,6.79,60,6.94,75,7.09,90,7.22,110,7.47,120,7.42,135,7.2,150,6.68,151.4,6.61744
16,38.5,6.273893,52,6.89,60,7.06,75,7.25,90,7.31,110,7.76,120,7.74,135,7.5,150,6.96,175.7,6.387981
20,38.3,6.294787,52,6.94,60,7.15,75,7.49,90,7.67,110,8.07,120,8.32,135,8.13,150,7.4,178.1,7.003851

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.73	4.96	5.14	5.12	5.2	5.05	4.6	3.94
8	5.55	5.82	6.04	6.17	6.27	6.1	5.58	4.9
10	6.25	6.46	6.6	6.78	6.85	6.76	6.44	5.7
12	6.6	6.76	6.89	7.08	7.18	7.11	6.9	6.33
14	6.79	6.94	7.09	7.22	7.47	7.42	7.2	6.68
16	6.89	7.06	7.25	7.31	7.76	7.74	7.5	6.96
20	6.94	7.15	7.49	7.67	8.07	8.32	8.13	7.4

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.3°	3.14	146.5°	3.41
8	40.4°	3.74	147.8°	4.24
10	40.7°	4.21	146.5°	4.93
12	40.3°	4.6	147.9°	5.48
14	39.1°	4.82	151.4°	5.81
16	38.5°	4.91	175.7°	6.37
20	38.3°	4.94	178.1°	7

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