The Sadler 25, a masthead sloop, was designed by David Sadler and built in the UK by Sadler Yachts Ltd.
Underwater Configuration: Fin keel and transom-hung rudder
Hull Material: GRP (fibreglass)
Length Overall: 24' 4" / 7.4m
Waterline Length: 19' 2" / 5.8m
Beam: 8' 9" / 2.7m
Draft: 4' 8" / 1.4m
Rig Type: Masthead Sloop
Displacement: 4,000lb / 1,814kg
Designer: David Sadler
Builder: Sadler Yachts Ltd (UK)
Year First Built: 1974
Year Last Built: 1981
Number Built: 200+
Owners Association: Sadler & Starlight Owners Association
A modified version - the Sadler 25 Mk 3 - was produced in 1979 with a taller mast and consequential increase in sail area. As a result, the sail area/displacement ratio increased to 16.87 resulting in an increase in performance, particularly in light airs.
1. Sail Area/Displacement Ratio: 15.8
2. Ballast/Displacement Ratio: 47.6
3. Displacement/Length Ratio: 253
4. Comfort Ratio: 16.6
5. Capsize Screening Formula: 2.2
1. A Sail Area/Displacement Ratio of just 15.8 suggests that she'll need a stiff breeze to get her going. In any other conditions, unless you've got plenty of time on your hands, motor-sailing will be the way to go.
2. A Ballast/Displacement Ratio of 47.6 means that she'll stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 253, tells us she's a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.
4. Ted Brewer's Comfort Ratio of 16.6 suggests that crew comfort in a seaway is similar to what you would associate with the motion of a lightweight racing boat. Upwind she'll slam enough to shake your fillings out with a motion that cruising sailors have no desire to get used to.
5. The Capsize Screening Formula (CSF) of 2.2 indicates that a Sadler 25 would not be the wisest choice of sailboat for ocean passage-making owing to the lower resistance to capsize in strong winds and heavy seas that is associated with similar sailboats that have a CSF of 2.0 and above.
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