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Sailboat specifications and datasheets

X-99 mk II

The X-99, here in "mk II" version, is a 32’7” offshore monohull sailboat designed by Niels Jeppesen. She was built by X-Yachts (Denmark) and made of sandwich fiberglass / polyester with galvanised steel frame. This sailboat was produced between 1985 and 2004 with 605 hulls completed.
X-Yachts X-99 X-Yachts X-99 sailplanX-Yachts X-99 layoutX-Yachts X-99 sailingX-Yachts X-99 sailingX-Yachts X-99 sailingX-Yachts X-99 sailingX-Yachts X-99 accommodationsX-Yachts X-99 accommodations
X-99's   Main Features
Model X-99
Version Mk II
Type of hull Monohull
Shipyard
Designer Niels Jeppesen
Construction Hull and deck:
sandwich fiberglass / polyester with galvanised steel frame
First built hull 1985
Last built hull 2004
Number of hulls built 605
Appendages Keel :
Fin without bulb
Helm 1 tiller
Rudder 1 spade rudder
Unsinkable No
Trailerable No
French navigation category 1
Standard public price ex. VAT (indicative only) N/A
X-99's   Main dimensions
Length overall 32’ 10”
Hull length 32’ 7”
Waterline length 27’ 11”
Beam (width) 9’ 10”
Draft 5’ 8”
Light displacement 6570 lbs
Ballast weight 2866 lbs
Ballast type Cast iron / lead fin
X-99's   Rig and sails
Upwind sail area 670 sq.ft
Downwind sail area 1186 sq.ft
Mainsail area 347 sq.ft
Genoa area 323 sq.ft
Solent area 215 sq.ft
Stormjib area 91 sq.ft
Symetric spinnaker area 840 sq.ft
Rigging type Sloop Marconi fractional
Spars Mast and boom in Aluminum
Number of levels of spreaders 2
Spreaders angle 5 °
IiFore triangle height (from mast foot to fore stay attachment) 36’ 11”
JiFore triangle base (from mast foot to bottom of forestay) 11’ 4”
PiMainsail hoist measurement (from tack to head) 41’
EiMainsail foot measurement (from tack to clew) 14’ 10”
X-99's   Performances
HN (French rating) 24.0
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
30.04
Downwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
53.22
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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 ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
44 %
Hull speediAs 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
X-99's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 10 HP
Fuel type Diesel
Fuel tank capacity 5.3 gal
X-99's   Accommodation
Cabin(s) 1
Berth(s) (min/max) 4 / 8
Head(s) 1
Fresh water tank capacity 9.2 gal
Chart table 4’ x 2’ 1”
Maximum headroom 5’ 11”
Galley headroom 5’ 7”
Head headroom 4’ 11”
X-99's   Saloon
Maximum headroom 5’ 7”
Saloon table length 3’ 7”
Saloon table width (min/max) 1’ 6” / 2’ 6”
Saloon width 6’ 7”
Berth length 6’ 6”
Berth width (head/elbows/knees/feet) 2’ 6”
2’ 5”
2’ 1”
1’ 6”
X-99's   Fore cabin
Maximum headroom 4’ 11”
Berth length 6’ 2”
Berth width (head/elbows/knees/feet) 5’ 2”
3’ 10”
2’ 5”
1’
X-99's   Aft cabin
Berth length 6’ 2”
Berth width (head/elbows/knees/feet) 2’ 10”
4’ 1”
3’ 6”
3’

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