X-412

Sailboat specifications

The X-412 is a 41’ (12.5m) cruiser-racer sailboat designed by Niels Jeppesen (Denmark). She was built between 1989 and 2003 by X-Yachts (Denmark) with 252 hulls completed.

X-412's main features

Model: X-412
Hull type: Monohull
Category: Offshore cruiser-racer sailboat
Sailboat builder: X-Yachts
Sailboat designer: Niels Jeppesen
Country: Denmark
Construction: GRP (glass reinforced polyester):
Sandwich Divinicell fiberglass vinylester
Number of hulls built: 252
First built hull: 1989
Last built hull: 2003
Appendages: Keel : L-shaped keel (with bulb)
Helm: Single helm wheel
Rudder: Single spade rudder
Unsinkable: No
Trailerable: No
Former French navigation category: 1
Standard public price ex. VAT (indicative only): N/A €

X-412's main dimensions

Overall length: 42’ 4”12.9 m
Hull length: 41’12.5 m
Waterline length: 34’ 2”10.43 m
Beam (width): 12’ 10”3.9 m
Draft: 6’ 11”2.1 m
Light displacement (M_LC): 16314 lb7400 kg
Ballast weight: 7716 lb3500 kg
French customs tonnage: 15.50 Tx

X-412's rig and sails

Upwind sail area: 1082 ft²100.5 m²
Downwind sail area: 1884 ft²175 m²
Mainsail area: 422 ft²39.2 m²
Genoa area: 660 ft²61.3 m²
Solent area: 602 ft²55.9 m²
Jib area: 440 ft²40.9 m²
Stormjib area: 147 ft²13.7 m²
Symmetric spinnaker area: 1462 ft²135.8 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

X-412'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.: 285 ft²/T26.47 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.: 496 ft²/T46.08 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.: 185
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.: 47 %
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.: 7.84 knots