The **X-99** is a 32’7” (9.95m) racer-cruiser sailboat designed by *Niels Jeppesen* (Denmark). She was built between 1985 and 2004 by *X-Yachts* (Denmark) with 605 hulls completed.

- Model
- X-99
- Hull type
- Monohull
- Category
- 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
- 605
- First built hull
- 1985
- Last built hull
- 2004
- Appendages
- Keel : fin without bulb
- Helm
- Single tiller
- Rudder
- Single spade rudder
- Unsinkable
- No
- Trailerable
- No
- Former French navigation category
- 1
- Standard public price ex. VAT (indicative only)
- N/A €

- Overall length
- 32’ 10”10 m
- Hull length
- 32’ 7”9.95 m
- Waterline length
- 27’ 11”8.5 m
- Beam (width)
- 9’ 10”3 m
- Draft
- 5’ 8”1.75 m
- Light displacement (M
_{LC}) - 6570 lb2980 kg
- Ballast weight
- 2866 lb1300 kg
- Ballast type
- Cast iron / lead fin

- Upwind sail area
- 670 ft²62.2 m²
- Downwind sail area
- 1186 ft²110.2 m²
- Mainsail area
- 347 ft²32.2 m²
- Genoa area
- 323 ft²30 m²
- Solent area
- 215 ft²20 m²
- Stormjib area
- 91 ft²8.5 m²
- Symmetric spinnaker area
- 840 ft²78 m²
- I
*iFore triangle height (from mast foot to fore stay top attachment)* - 36’ 11”11.25 m
- J
*iFore triangle base (from mast foot to bottom of forestay)* - 11’ 4”3.45 m
- P
*iMainsail hoist measurement (from tack to head)* - 41’12.5 m
- E
*iMainsail foot measurement (from tack to clew)* - 14’ 10”4.5 m
- Rigging type
- Sloop Marconi fractional
- Mast configuration
- Keel stepped mast
- Rotating spars
- No
- Number of levels of spreaders
- 2
- Spreaders angle
- 5 °
- Running backstays
- 2 set(s)
- Spars construction
- Aluminum spars
- Standing rigging
- 1x19 strand wire discontinuous

- HN (French rating)
*iHN or "Handicap Nationale" is an empirical rating system used in France allowing various monohulls, of different sizes and designs, to race each other fairly. It is particularly suitable for cruiser and cruiser-racer. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.* - 24.0
- 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. - 323 ft²/T30.04 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. - 573 ft²/T53.22 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. - 137
- 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. - 7.08 knots

- Engine(s)
- 1 inboard engine
- Engine(s) power
- 10 HP
- Fuel type
- Diesel
- Fuel tank capacity
- 5.3 gal20 liters

- Cockpit
- Closed aft cockpit
- Cabin(s)
- 1
- Berth(s) (min./max.)
- 4 / 8
- Head(s)
- 1
- Freshwater tank capacity
- 9.2 gal35 liters
- Maximum headroom
- 5’ 11”1.8 m
- Galley headroom
- 5’ 7”1.72 m
- Head headroom
- 4’ 11”1.49 m

- Maximum headroom
- 5’ 7”1.72 m
- Saloon table length
- 3’ 7”1.1 m
- Saloon table width (min./max.)
- 1’ 6”0.45 m / 2’ 6”0.76 m
- Saloon width
- 6’ 7”2 m
- Berth length
- 6’ 6”1.98 m
- Chart table
- 4’1.21 m x 2’ 1”0.64 m
- Berth width (head/elbows/knees/feet)
- 2’ 6”0.75 m / 2’ 5”0.73 m / 2’ 1”0.63 m / 1’ 6”0.46 m

- Maximum headroom
- 4’ 11”1.49 m
- Berth length
- 6’ 2”1.9 m
- Berth width (head/elbows/knees/feet)
- 5’ 2”1.59 m / 3’ 10”1.16 m / 2’ 5”0.73 m / 1’0.3 m

- Berth length
- 6’ 2”1.9 m
- Berth width (head/elbows/knees/feet)
- 2’ 10”0.86 m / 4’ 1”1.26 m / 3’ 6”1.06 m / 3’0.92 m

Sailboats

First built hull

Hull length

1979

30’ 4”9.25 m

1979

26’ 1”7.96 m

1984

39’ 8”12.09 m

2006

35’ 10”10.9 m

2017

32’9.75 m

1971

30’9.14 m

2019

33’ 11”10.34 m

2019

32’ 7”9.94 m

2007

32’ 1”9.78 m

2010

32’ 10”10 m

1984

35’ 8”10.87 m

2006

34’ 8”10.59 m

2014

34’ 8”10.59 m

2014

35’ 5”10.8 m

1979

30’ 2”9.2 m