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Sailboat specifications and datasheets

VX One

The VX One is a 19’ double handed monohull sailboat designed by Brian Bennett. She was built by Ovington Boats (United Kingdom) and made of sandwich PVC / fiberglass / vinylester (composite infusion). The production started in 2011 .
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VX One's   Main Features
Model VX One
Type of hull Monohull
Category One design sailboat
Shipyard
Designer Brian Bennett
Construction Hull and deck:
sandwich PVC / fiberglass / vinylester (composite infusion)
First built hull 2011
Last built hull Still in production
Appendages Keel (lifting) :
Fin with bulb, lifting
Helm 1 tiller
Rudder 1 transom hung rudder
Cockpit Open aft cockpit
Unsinkable No
Trailerable Yes
Standard public price ex. VAT (indicative only) About
25 000
(2017)
VX One's   Main dimensions
Hull length 19’
Waterline length 18’ 10”
Beam (width) 7’ 2”
Draft 4’ 4”
Light displacement 569 lbs
Ballast weight 143 lbs
Ballast type Lead
VX One's   Rig and sails
Upwind sail area 215 sq.ft
Downwind sail area 452 sq.ft
Mainsail area 172 sq.ft
Jib area 43 sq.ft
Asymetric spinnaker area 280 sq.ft
Rigging type Sloop Marconi (square top mainsail) 3/4
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Carbon fiber
Number of levels of spreaders 1
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 21’ 11”
JiFore triangle base (from mast foot to bottom of forestay) 7’ 6”
PiMainsail hoist measurement (from tack to head) 23’ 5”
EiMainsail foot measurement (from tack to clew) 9’ 10”
VX One's   Performances
Crew 2 - 3 (180kg - 220kg)
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.
49.35
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.
103.63
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.
39
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.
25 %
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.
5.82 knots

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