TORNADO III — ORC Rating

GPH

639.7

OSN

620.5

LOA

12.07 m

Displacement

7375 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6353

Medium

0.8622

High

0.9883

Triple Offshore

Low

0.8174

Medium

1.0611

High

1.1783

Boat Specifications

Dimensions

Length overall: 12.07 m
Beam: 3.75 m
Draft: 2.27 m
Displacement: 7375 kg
Crew weight: 360 kg
Wetted surface: 31.29 m²

Sails

Mainsail: 34.5 m²
Genoa: 56.97 m²
Spinnaker: 118.89 m²
Asymmetric spinnaker: 0 m²

Design

Type: COBO 40
Builder: COBO
Designer: R. HOLLAND
Year built: 1977

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.

6,42.8,4.6066,52,5.13,60,5.41,75,5.62,90,5.56,110,5.4,120,5.27,135,4.8,146,4.245887,150,4.07
8,40.9,5.397872,52,6.09,60,6.39,75,6.6,90,6.57,110,6.59,120,6.45,135,5.93,149.5,5.164635,150,5.14
10,41.2,6.087067,52,6.75,60,6.94,75,7.09,90,7.1,110,7.23,120,7.17,135,6.85,150,6.096819
12,40.5,6.391323,52,7.01,60,7.19,75,7.35,90,7.4,110,7.59,120,7.57,135,7.34,150,6.89,155.5,6.626656
14,39.4,6.444653,52,7.12,60,7.32,75,7.54,90,7.64,110,7.86,120,7.93,135,7.7,150,7.33,173,6.69994
16,39,6.472401,52,7.17,60,7.38,75,7.67,90,7.84,110,8.04,120,8.27,135,8.08,150,7.67,180,7.16
20,39.4,6.496418,52,7.18,60,7.41,75,7.79,90,8.18,110,8.35,120,8.67,135,8.84,150,8.38,180,7.83

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.13	5.41	5.62	5.56	5.4	5.27	4.8	4.07
8	6.09	6.39	6.6	6.57	6.59	6.45	5.93	5.14
10	6.75	6.94	7.09	7.1	7.23	7.17	6.85	6.1
12	7.01	7.19	7.35	7.4	7.59	7.57	7.34	6.89
14	7.12	7.32	7.54	7.64	7.86	7.93	7.7	7.33
16	7.17	7.38	7.67	7.84	8.04	8.27	8.08	7.67
20	7.18	7.41	7.79	8.18	8.35	8.67	8.84	8.38

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.38	146°	3.52
8	40.9°	4.08	149.5°	4.45
10	41.2°	4.58	150°	5.28
12	40.5°	4.86	155.5°	6.03
14	39.4°	4.98	173°	6.65
16	39°	5.03	180°	7.16
20	39.4°	5.02	180°	7.83

Loading polar chart…