Skymark — ORC Rating | RegattaPages

GPH

690.5

OSN

668.4

LOA

10.491 m

Displacement

5078 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6049

Medium

0.8093

High

0.9239

Triple Offshore

Low

0.7663

Medium

0.9782

High

1.0795

Boat Specifications

Dimensions

Length overall: 10.491 m
Beam: 3.08 m
Draft: 2.54 m
Displacement: 5078 kg
Crew weight: 462 kg
Wetted surface: 22.39 m²

Sails

Mainsail: 22.58 m²
Genoa: 38.9 m²
Spinnaker: 80.15 m²
Asymmetric spinnaker: 0 m²

Design

Type: TARTAN 34C
Builder: Tartan Yachts
Designer: OLIN STEPHENS
Year built: 1967
Stability index: 120.1

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.

6,40.8,4.346131,52,4.88,60,5.07,75,5.17,90,5.05,110,5.04,120,4.89,135,4.46,146.9,3.93927,150,3.81
8,39.3,5.052723,52,5.66,60,5.83,75,5.93,90,5.87,110,6.01,120,5.9,135,5.46,150,4.81,151.4,4.749523
10,38.2,5.535359,52,6.14,60,6.27,75,6.37,90,6.38,110,6.55,120,6.5,135,6.23,150,5.66,152.9,5.526768
12,37.2,5.77505,52,6.39,60,6.52,75,6.64,90,6.65,110,6.88,120,6.87,135,6.67,150,6.3,159.5,5.95726
14,36.6,5.854382,52,6.49,60,6.63,75,6.81,90,6.87,110,7.1,120,7.16,135,7.01,150,6.69,173,6.16596
16,36.4,5.913824,52,6.54,60,6.69,75,6.91,90,7.04,110,7.24,120,7.4,135,7.32,150,7.01,177.2,6.547817
20,36.4,5.96352,52,6.59,60,6.75,75,7,90,7.25,110,7.46,120,7.73,135,7.88,150,7.58,178.4,7.132781

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.88	5.07	5.17	5.05	5.04	4.89	4.46	3.81
8	5.66	5.83	5.93	5.87	6.01	5.9	5.46	4.81
10	6.14	6.27	6.37	6.38	6.55	6.5	6.23	5.66
12	6.39	6.52	6.64	6.65	6.88	6.87	6.67	6.3
14	6.49	6.63	6.81	6.87	7.1	7.16	7.01	6.69
16	6.54	6.69	6.91	7.04	7.24	7.4	7.32	7.01
20	6.59	6.75	7	7.25	7.46	7.73	7.88	7.58

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	40.8°	3.29	146.9°	3.3
8	39.3°	3.91	151.4°	4.17
10	38.2°	4.35	152.9°	4.92
12	37.2°	4.6	159.5°	5.58
14	36.6°	4.7	173°	6.12
16	36.4°	4.76	177.2°	6.54
20	36.4°	4.8	178.4°	7.13

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