X-tra — ORC Rating | RegattaPages

GPH

623

OSN

607.4

LOA

10 m

Displacement

2988 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7466

Medium

0.9927

High

1.1222

Triple Offshore

Low

0.9636

Medium

1.2147

High

1.3521

Boat Specifications

Dimensions

Length overall: 10 m
Beam: 2.99 m
Draft: 1.79 m
Displacement: 2988 kg
Crew weight: 512 kg
Wetted surface: 20.16 m²

Sails

Mainsail: 33.46 m²
Genoa: 30.25 m²
Spinnaker: 74.57 m²
Asymmetric spinnaker: 0 m²

Design

Type: X-99
Builder: X-Yachts
Designer: NIELS JEPPESEN
Year built: 1985

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.

6,42.1,4.919298,52,5.52,60,5.8,75,6.02,90,5.93,110,5.74,120,5.56,135,4.96,144.6,4.367413,150,4.11
8,41,5.830057,52,6.46,60,6.64,75,6.77,90,6.75,110,6.78,120,6.66,135,6.14,149,5.24985,150,5.2
10,39,6.163578,52,6.8,60,6.96,75,7.12,90,7.14,110,7.29,120,7.21,135,6.9,149.7,6.231211,150,6.22
12,38.2,6.286132,52,6.92,60,7.11,75,7.39,90,7.5,110,7.77,120,7.74,135,7.36,150,6.91,158.6,6.583923
14,37.7,6.344604,52,6.98,60,7.19,75,7.56,90,7.84,110,8.12,120,8.31,135,7.91,150,7.35,180,6.73
16,37.9,6.374479,52,7.02,60,7.24,75,7.68,90,8.11,110,8.42,120,8.82,135,8.51,150,7.84,180,7.17
20,37.9,6.437844,52,7.1,60,7.33,75,7.78,90,8.37,110,8.94,120,9.55,135,10.14,150,9.03,180,8.08

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.52	5.8	6.02	5.93	5.74	5.56	4.96	4.11
8	6.46	6.64	6.77	6.75	6.78	6.66	6.14	5.2
10	6.8	6.96	7.12	7.14	7.29	7.21	6.9	6.22
12	6.92	7.11	7.39	7.5	7.77	7.74	7.36	6.91
14	6.98	7.19	7.56	7.84	8.12	8.31	7.91	7.35
16	7.02	7.24	7.68	8.11	8.42	8.82	8.51	7.84
20	7.1	7.33	7.78	8.37	8.94	9.55	10.14	9.03

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.1°	3.65	144.6°	3.56
8	41°	4.4	149°	4.5
10	39°	4.79	149.7°	5.38
12	38.2°	4.94	158.6°	6.13
14	37.7°	5.02	180°	6.73
16	37.9°	5.03	180°	7.17
20	37.9°	5.08	180°	8.08

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