NORTHSTAR — ORC Rating

GPH

605.5

OSN

588.3

LOA

12.406 m

Displacement

10393 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6672

Medium

0.9008

High

1.0328

Triple Offshore

Low

0.8621

Medium

1.1208

High

1.2499

Boat Specifications

Dimensions

Length overall: 12.406 m
Beam: 4.02 m
Draft: 1.91 m
Displacement: 10393 kg
Crew weight: 740 kg
Wetted surface: 38.38 m²

Sails

Mainsail: 46.63 m²
Genoa: 57.82 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 147.17 m²

Design

Type: TARTAN 4000
Builder: TARTAN YACHTS
Designer: TIM JACKET
Year built: 2011
Stability index: 104.7

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.

6,44.5,4.80897,52,5.29,60,5.65,75,5.93,90,5.86,110,5.89,120,5.76,135,5.23,144.2,4.746852,150,4.45
8,42.4,5.606297,52,6.27,60,6.62,75,6.9,90,6.94,110,7.11,120,6.96,135,6.41,148.4,5.670832,150,5.58
10,42.4,6.364637,52,7.05,60,7.32,75,7.5,90,7.64,110,7.78,120,7.7,135,7.35,147.5,6.711,150,6.54
12,41.8,6.841267,52,7.47,60,7.67,75,7.82,90,7.89,110,8.15,120,8.11,135,7.87,149.2,7.346094,150,7.29
14,40.6,6.980377,52,7.63,60,7.84,75,8.04,90,8.1,110,8.47,120,8.5,135,8.24,150,7.7,150.5,7.663533
16,40,7.062253,52,7.71,60,7.91,75,8.2,90,8.33,110,8.68,120,8.9,135,8.65,150,7.98,170.9,7.200629
20,39.4,7.091707,52,7.77,60,7.98,75,8.33,90,8.71,110,9.06,120,9.46,135,9.53,150,8.51,177.2,7.899431

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.29	5.65	5.93	5.86	5.89	5.76	5.23	4.45
8	6.27	6.62	6.9	6.94	7.11	6.96	6.41	5.58
10	7.05	7.32	7.5	7.64	7.78	7.7	7.35	6.54
12	7.47	7.67	7.82	7.89	8.15	8.11	7.87	7.29
14	7.63	7.84	8.04	8.1	8.47	8.5	8.24	7.7
16	7.71	7.91	8.2	8.33	8.68	8.9	8.65	7.98
20	7.77	7.98	8.33	8.71	9.06	9.46	9.53	8.51

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.5°	3.43	144.2°	3.85
8	42.4°	4.14	148.4°	4.83
10	42.4°	4.7	147.5°	5.66
12	41.8°	5.1	149.2°	6.31
14	40.6°	5.3	150.5°	6.67
16	40°	5.41	170.9°	7.11
20	39.4°	5.48	177.2°	7.89

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