The **X-43** is a 42’5” (12.93m) cruiser-racer sailboat designed by *Niels Jeppesen* (Denmark). She was built between 2003 and 2010 by *X-Yachts* (Denmark) with 169 hulls completed.

The**X-43** is as well listed, on Boat-Specs.com, in Shoal draft and Sport version (see all the versions compared).

The

- Model
- X-43
- Version
- Standard
- Hull type
- Monohull
- Category
- Cruiser-racer sailboat
- Sailboat builder
- Sailboat designer
- Country
- Denmark
- Construction
- GRP (glass reinforced polyester):

Sandwich fiberglass polyester with galvanized steel frame - Number of hulls built
- 169
- First built hull
- 2003
- Last built hull
- 2010
- Appendages
- Keel : L-shaped keel (with bulb)
- Helm
- Single helm wheel
- Rudder
- Single spade rudder
- Unsinkable
- No
- Trailerable
- No
- Standard public price ex. VAT (indicative only)
- N/A €

- Hull length
- 42’ 5”12.93 m
- Waterline length
- 37’ 7”11.45 m
- Beam (width)
- 13’3.97 m
- Draft
- 7’ 2”2.2 m
- Light displacement (M
_{LC}) - 18960 lb8600 kg
- Ballast weight
- 8157 lb3700 kg
- Ballast type
- Cast iron fin with lead bulb

- Upwind sail area
- 1152 ft²107 m²
- Downwind sail area
- 1996 ft²185.4 m²
- Mainsail area
- 575 ft²53.4 m²
- Genoa area
- 577 ft²53.6 m²
- Solent area
- 459 ft²42.6 m²
- Jib area
- 361 ft²33.5 m²
- Symmetric spinnaker area
- 1421 ft²132 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)

- 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. - 274 ft²/T25.49 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. - 475 ft²/T44.17 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. - 162
- 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. - 43 %
- 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. - 8.21 knots

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

- Cockpit
- Closed aft cockpit
- Cabin(s)
- 3
- Berth(s) (min./max.)
- 6 / 8
- Head(s)
- 2

Sailboats

First built hull

Hull length

1989

41’12.5 m

2006

42’ 6”12.95 m

2004

43’ 10”13.35 m

1993

44’ 4”13.5 m

2004

44’ 6”13.55 m

2003

42’ 5”12.93 m

1998

42’ 7”12.98 m

2017

40’12.2 m

2018

43’ 4”13.2 m

2003

46’14.01 m

2011

40’12.2 m

2008

43’ 1”13.15 m

1996

40’ 10”12.45 m

2004

37’ 2”11.35 m

2007

40’ 4”12.27 m