The Vertue 25, a heavy-displacement long-keeled sloop, was designed by Jack Laurent Giles and built in the UK by E.F.Elkins Ltd.
Underwater Profile: Long keel with transom-hung rudder
Hull Material: Various*
Length Overall: 25'3" (7.7m)
Waterline Length: 21'6" (6.6m)
Beam: 7'2" (2.2m)
Draft: 4'6" (1.4m)
Rig Type: Masthead sloop
Displacement: 11,000lb (4,990kg)
Designer: Jack Laurent Giles
Builder: E F Elkins Ltd (UK)
Year First Built: 1947
Number Built: 270
* 230 in wood, wood/epoxy or steel, plus 40 in GRP.
1. Sail Area/Displacement Ratio: 9.7
2. Ballast/Displacement Ratio: 40.9
3. Displacement/Length Ratio: 494
4. Comfort Ratio: 54.6
5. Capsize Screening Formula: 1.3
Read more about these Key Performance Indicators...
1. A Sail Area/Displacement Ratio of just 9.7 suggests that the Vertue 25 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.
2. A Ballast/Displacement Ratio of 40.9 means that the Vertue 25 will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 494, tells us the Vertue 25 is firmly in the ultra-heavy displacement category. Load her up as much as you like and her performance will be hardly affected, not that it was ever startling. Few if any sailboats are built to this displacement category these days - but they remain popular with some long-distance sailors.
4. Ted Brewer's Comfort Ratio of 54.6 suggests that crew comfort of a Vertue 25 in a seaway is similar to what you would associate with the motion of an extremely heavy bluewater boat - and that's as comfortable as life ever gets on a sailing boat!
5. The Capsize Screening Formula (CSF) of 1.3 indicates that a Vertue 25 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.
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Mar 24, 23 10:39 AM