RASS LIMIT — ORC Rating

GPH

583.4

OSN

569.9

LOA

12.125 m

Displacement

5890 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7082

Medium

0.9397

High

1.0737

Triple Offshore

Low

0.9163

Medium

1.1515

High

1.2814

Boat Specifications

Dimensions

Length overall: 12.125 m
Beam: 3.88 m
Draft: 2.18 m
Displacement: 5890 kg
Crew weight: 850 kg
Wetted surface: 28.01 m²

Sails

Mainsail: 56.82 m²
Genoa: 48.44 m²
Spinnaker: 90.26 m²
Asymmetric spinnaker: 0 m²

Design

Type: X 1 TON MK II
Builder: X YATCHS
Designer: N. JEPPESEN
Year built: 1981

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.

6,42.8,5.369824,52,6,60,6.34,75,6.62,90,6.58,110,6.03,120,5.81,135,5.19,144,4.659976,150,4.35
8,41.2,6.286425,52,6.96,60,7.17,75,7.32,90,7.33,110,7.17,120,7,135,6.4,148,5.589306,150,5.47
10,39,6.639679,52,7.33,60,7.51,75,7.69,90,7.73,110,7.71,120,7.61,135,7.23,150,6.48,151,6.42565
12,37.9,6.805358,52,7.49,60,7.69,75,7.97,90,8.08,110,8.17,120,8.08,135,7.71,150,7.23,158,6.870266
14,37.1,6.87075,52,7.58,60,7.81,75,8.16,90,8.39,110,8.6,120,8.55,135,8.17,150,7.69,180,7.03
16,37.1,6.920902,52,7.64,60,7.88,75,8.29,90,8.63,110,8.93,120,8.99,135,8.63,150,8.12,180,7.54
20,36.8,7.018584,52,7.76,60,7.99,75,8.42,90,8.91,110,9.37,120,9.82,135,9.62,150,8.99,180,8.36

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6	6.34	6.62	6.58	6.03	5.81	5.19	4.35
8	6.96	7.17	7.32	7.33	7.17	7	6.4	5.47
10	7.33	7.51	7.69	7.73	7.71	7.61	7.23	6.48
12	7.49	7.69	7.97	8.08	8.17	8.08	7.71	7.23
14	7.58	7.81	8.16	8.39	8.6	8.55	8.17	7.69
16	7.64	7.88	8.29	8.63	8.93	8.99	8.63	8.12
20	7.76	7.99	8.42	8.91	9.37	9.82	9.62	8.99

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.94	144°	3.77
8	41.2°	4.73	148°	4.74
10	39°	5.16	151°	5.62
12	37.9°	5.37	158°	6.37
14	37.1°	5.48	180°	7.03
16	37.1°	5.52	180°	7.54
20	36.8°	5.62	180°	8.36

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