VX One

Sailboat specifications

The VX One is a 19’ (5.79m) one design sailboat designed by Bennett Yachting (New Zealand). She is built since 2011 by Ovington Boats (United Kingdom).

VX One's main features

Model: VX One
Hull type: Monohull
Category: One design sailboat
Sailboat builder: Ovington Boats
Sailboat designer: Bennett Yachting
Country: United Kingdom
Construction: GRP (glass reinforced polyester):
Sandwich PVC fiberglass vinylester (vacuum infusion)
First built hull: 2011
Last built hull: Still in production
Appendages: Lifting keel : retractable L-shaped keel (with bulb)
Helm: Single tiller
Rudder: Single transom hung rudder
Unsinkable: No
Trailerable: Yes
Standard public price ex. VAT (indicative only): About
21 600 €
(2020)

VX One's main dimensions

Hull length: 19’5.79 m
Waterline length: 18’ 10”5.74 m
Beam (width): 7’ 2”2.19 m
Draft: 4’ 4”1.32 m
Light displacement (M_LC): 569 lb258 kg
Ballast weight: 143 lb65 kg
Ballast type: Lead

VX One's rig and sails

Upwind sail area: 215 ft²20 m²
Downwind sail area: 452 ft²42 m²
Mainsail area: 172 ft²16 m²
Jib area: 43 ft²4 m²
Asymmetric spinnaker area: 280 ft²26 m²
I iFore triangle height (from mast foot to fore stay top attachment): 21’ 11”6.66 m
J iFore triangle base (from mast foot to bottom of forestay): 7’ 6”2.28 m
P iMainsail hoist measurement (from tack to head): 23’ 5”7.14 m
E iMainsail foot measurement (from tack to clew): 9’ 10”2.98 m
Rigging type: Sloop Marconi (square top mainsail) 3/4
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: Swept-back
Spars construction: Carbon fiber spars

VX One's performances

Crew: 2 - 3 (180kg - 220kg)
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.: 531 ft²/T49.35 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.: 1115 ft²/T103.63 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.: 39
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.: 25 %
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.: 5.82 knots