Tramontana II — ORC Rating

GPH

608.8

OSN

602.3

LOA

13.2 m

Displacement

6780 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7205

Medium

0.8897

High

Triple Offshore

Low

0.9192

Medium

1.0795

High

1.1728

Boat Specifications

Dimensions

Length overall: 13.2 m
Beam: 2.25 m
Draft: 1.67 m
Displacement: 6780 kg
Crew weight: 605 kg
Wetted surface: 26.59 m²

Sails

Mainsail: 71.91 m²
Genoa: 39.86 m²
Spinnaker: 141.22 m²
Asymmetric spinnaker: 0 m²

Design

Type: 8mR
Builder: W. Hacht
Designer: W. Hacht
Year built: 1907

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.

6,42,5.140317,52,5.77,60,6.12,75,6.49,90,6.6,110,6.3,120,6.15,135,5.77,144.1,5.258989,150,4.92
8,40.6,5.54479,52,6.25,60,6.55,75,6.86,90,7.03,110,6.98,120,6.94,135,6.82,148.1,6.160394,150,6.04
10,40,5.822117,52,6.53,60,6.8,75,7.09,90,7.27,110,7.36,120,7.39,135,7.4,150,6.92,154.7,6.669745
12,39.6,6.02196,52,6.73,60,6.97,75,7.25,90,7.44,110,7.61,120,7.69,135,7.76,150,7.48,160.8,7.073451
14,39.3,6.164063,52,6.86,60,7.09,75,7.37,90,7.58,110,7.78,120,7.93,135,8.01,150,7.88,175.2,7.245411
16,39.1,6.262512,52,6.96,60,7.19,75,7.46,90,7.7,110,7.92,120,8.16,135,8.22,150,8.26,178.6,7.652284
20,39.2,6.400458,52,7.09,60,7.31,75,7.6,90,7.87,110,8.15,120,8.5,135,8.83,150,9.07,178.4,8.41328
24,40.6,6.453556,52,7.12,60,7.36,75,7.68,90,7.99,110,8.4,120,8.48,135,9.54,150,10.04,172.1,9.399203

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.77	6.12	6.49	6.6	6.3	6.15	5.77	4.92
8	6.25	6.55	6.86	7.03	6.98	6.94	6.82	6.04
10	6.53	6.8	7.09	7.27	7.36	7.39	7.4	6.92
12	6.73	6.97	7.25	7.44	7.61	7.69	7.76	7.48
14	6.86	7.09	7.37	7.58	7.78	7.93	8.01	7.88
16	6.96	7.19	7.46	7.7	7.92	8.16	8.22	8.26
20	7.09	7.31	7.6	7.87	8.15	8.5	8.83	9.07
24	7.12	7.36	7.68	7.99	8.4	8.48	9.54	10.04

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.82	144.1°	4.26
8	40.6°	4.21	148.1°	5.23
10	40°	4.46	154.7°	6.03
12	39.6°	4.64	160.8°	6.68
14	39.3°	4.77	175.2°	7.22
16	39.1°	4.86	178.6°	7.65
20	39.2°	4.96	178.4°	8.41
24	40.6°	4.9	172.1°	9.31

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