Detailed sailboat specifications and datasheets since 2015
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X-50 Standard

Sailboat specifications

The X-50 is a 50’ (15.24m) racer-cruiser sailboat designed by Niels Jeppesen (Denmark). She was built between 2004 and 2011 by X-Yachts (Denmark) with 63 hulls completed.

The X-50 is as well listed, on Boat-Specs.com, in Shoal draft version (see all the versions compared).

X-50's main features

Model
X-50
Version
Standard
Hull type
Monohull
Category
Offshore racer-cruiser sailboat
Sailboat builder
Sailboat designer
Country
Denmark
Construction
GRP (glass reinforced polyester):
Sandwich fiberglass polyester with galvanized steel frame
Number of hulls built
63
First built hull
2004
Last built hull
2011
Appendages
Keel : L-shaped keel (with bulb)
Helm
Twin helm wheels
Rudder
Single spade rudder
Unsinkable
No
Trailerable
No
EC design category
 iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions)

A: Wind < force 9, Waves < 10m
B: Wind < force 8, Waves < 8m
C: Wind < force 6, Waves < 4m
D: Wind < force 4, Waves < 0,5m
A
Standard public price ex. VAT (indicative only)
N/A

X-50's main dimensions

Hull length
50’15.24 m
Waterline length
43’ 1”13.14 m
Beam (width)
14’4.28 m
Waterline beam (width)
11’ 11”3.63 m
Draft
9’ 10”3 m
Light displacement (MLC)
27337 lb12400 kg
Ballast weight
10935 lb4960 kg
Ballast type
Cast iron / lead fin

X-50's rig and sails

Upwind sail area
1667 ft²154.9 m²
Downwind sail area
2921 ft²271.4 m²
Mainsail area
829 ft²77 m²
Genoa area
839 ft²77.9 m²
Solent area
671 ft²62.3 m²
Jib area
554 ft²51.5 m²
Symmetric spinnaker area
2093 ft²194.4 m²
Rigging type
Sloop Marconi 9/10
Mast configuration
Keel stepped mast
Rotating spars
No
Number of levels of spreaders
3
Spreaders angle
Swept-back
Spars construction
Aluminum spars (carbon fiber spars as an option)
Standing rigging
Single-strand (ROD)

X-50's performances

Upwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.

Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.
311 ft²/T28.91 m²/T
Downwind sail area to displacement
 iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.

The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size.
545 ft²/T50.66 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length:

a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
155
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
40 %
Critical hull speed
 iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
8.80 knots

X-50's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
75 HP
Fuel type
Diesel

X-50's accommodations and layout

Cockpit
Open aft cockpit
Cabin(s) (min./max.)
3 / 4
Berth(s) (min./max.)
6 / 8
Head(s)
3
Have you spotted incorrect data?  You can report it in the forum or contact the webmaster

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