NORTHSTAR — ORC Rating

GPH

597.1

OSN

581.2

LOA

12.406 m

Displacement

10394 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6831

Medium

0.9138

High

1.037

Triple Offshore

Low

0.8822

Medium

1.1337

High

1.2556

Boat Specifications

Dimensions

Length overall: 12.406 m
Beam: 4.02 m
Draft: 1.91 m
Displacement: 10394 kg
Crew weight: 740 kg
Wetted surface: 38.37 m²

Sails

Mainsail: 46.63 m²
Genoa: 57.82 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 150.59 m²

Design

Type: TARTAN 4000
Builder: TARTAN YACHTS
Designer: TIM JACKET
Year built: 2011
Stability index: 104.4

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.

6,44.8,5.07349,52,5.57,60,5.92,75,6.17,90,6.06,110,5.9,120,5.77,135,5.2,143.8,4.733814,150,4.41
8,42.9,5.95187,52,6.59,60,6.88,75,7.08,90,7.03,110,7.1,120,6.97,135,6.44,147.8,5.707917,150,5.58
10,41.4,6.519035,52,7.22,60,7.44,75,7.6,90,7.61,110,7.79,120,7.72,135,7.36,147.8,6.712415,150,6.56
12,40.5,6.799,52,7.49,60,7.71,75,7.9,90,7.95,110,8.18,120,8.17,135,7.92,148.7,7.384791,150,7.29
14,39.6,6.917467,52,7.63,60,7.84,75,8.1,90,8.2,110,8.48,120,8.56,135,8.34,150,7.72,150.1,7.717182
16,39.4,7.01406,52,7.72,60,7.93,75,8.22,90,8.41,110,8.7,120,8.9,135,8.75,150,8.03,171.2,7.194693
20,39,7.090045,52,7.8,60,8.02,75,8.38,90,8.71,110,9.04,120,9.43,135,9.55,150,8.62,176.3,7.956585

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.57	5.92	6.17	6.06	5.9	5.77	5.2	4.41
8	6.59	6.88	7.08	7.03	7.1	6.97	6.44	5.58
10	7.22	7.44	7.6	7.61	7.79	7.72	7.36	6.56
12	7.49	7.71	7.9	7.95	8.18	8.17	7.92	7.29
14	7.63	7.84	8.1	8.2	8.48	8.56	8.34	7.72
16	7.72	7.93	8.22	8.41	8.7	8.9	8.75	8.03
20	7.8	8.02	8.38	8.71	9.04	9.43	9.55	8.62

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.8°	3.6	143.8°	3.82
8	42.9°	4.36	147.8°	4.83
10	41.4°	4.89	147.8°	5.68
12	40.5°	5.17	148.7°	6.31
14	39.6°	5.33	150.1°	6.69
16	39.4°	5.42	171.2°	7.11
20	39°	5.51	176.3°	7.94

Loading polar chart…