X-512 Shoal draft

Sailboat specifications

The X-512 is a 51’1” (15.59m) cruiser-racer sailboat designed by Niels Jeppesen (Denmark). She was built between 1990 and 1995 by X-Yachts (Denmark) with 17 hulls completed. The Shoal draft version features a shorter keel to grant access to shallow areas.

The X-512 is as well listed, on Boat-Specs.com, in Standard version (see all the versions compared).

X-512's main features

Model: X-512
Version: Shoal draft
Hull type: Monohull
Category: Offshore cruiser-racer sailboat
Sailboat builder: X-Yachts
Sailboat designer: Niels Jeppesen
Country: Denmark
Construction: GRP (glass reinforced polyester):
Sandwich fiberglass polyester with galvanized steel frame
Number of hulls built: 17
First built hull: 1990
Last built hull: 1995
Appendages: Keel : fin with bulb
Helm: Twin helm wheels
Rudder: Single spade rudder
Unsinkable: No
Trailerable: No
Standard public price ex. VAT (indicative only): N/A €

X-512's main dimensions

Hull length: 51’ 1”15.59 m
Waterline length: 41’ 6”12.66 m
Beam (width): 14’ 10”4.5 m
Draft: 6’ 7”2 m
Light displacement (M_LC): 30111 lb13658 kg
Ballast weight: 13228 lb6000 kg
Ballast type: Lead

X-512's rig and sails

Upwind sail area: 1698 ft²157.72 m²
Downwind sail area: 2902 ft²269.64 m²
Mainsail area: 702 ft²65.24 m²
Genoa area: 995 ft²92.48 m²
Solent area: 664 ft²61.65 m²
Symmetric spinnaker area: 2200 ft²204.4 m²
Rigging type: Sloop Marconi masthead
Mast configuration: Keel stepped mast
Rotating spars: No
Number of levels of spreaders: 3
Spreaders angle: 0 °
Spars construction: Aluminum spars
Standing rigging: Single-strand (ROD)

X-512'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.: 297 ft²/T27.6 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.: 508 ft²/T47.19 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.: 191
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.: 44 %
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.: 8.64 knots