The Sadler 34 Sailboat
The Sadler 34, a masthead sloop, was designed by David & Martin Sadler and built in the UK by Sadler Yachts Ltd.
The Sadler 34
Published Specification for the Sadler 34
Underwater Profile: Fin with Skeg-hung Rudder
Hull Material: GRP (Fibreglass)
Length Overall: 34'9" (10.6m)
Waterline Length: 27'10" (8.5m)
Beam: 10'9" (3.3m)
Draft: 5'10" (1.8m)
Rig Type: Masthead sloop
Displacement: 12,800lb (5,806kg)
Designer: David & Martin Sadler
Builder: Sadler Yachts (UK)
Year First Built: 1983
Year Last Built: 1995
Number Built: 260
Owners Association: Sadler and Starlight Owners Association
Published Design Ratios for the Sadler 34
1. Sail Area/Displacement Ratio: 14.6
- Less than 16 would be considered under-powered;
- 16 to 20 would indicate reasonably good performance;
- Over 20 suggests relatively high performance.
2. Ballast/Displacement Ratio: 39.1
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 265
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 28.0
- Under 20 indicates a lightweight racing boat
- 20 to 30 indicates a coastal cruiser
- 30 to 40 indicates a moderate offshore cruising boat
- 40 to 50 indicates a heavy offshore boat
- Over 50 indicates an extremely heavy offshore boat
5. Capsize Screening Formula: 1.8
- Under 2.0 (the lower the better): Better suited for ocean passages
- Over 2.0: Less suited for ocean passages
read more about these all-revealing numbers...
Summary Analysis of the Design Ratios for the Sadler 34
1. A Sail Area/Displacement Ratio of just 14.6 suggests that the Sadler 34 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 39.1 means that unless the bulk of the ballast is concentrated in a bulb at the foot of her keel, the Sadler 34 will have a tendency to heel excessively in a gust, and she'll need to be reefed early to keep her sailing upright in a moderate breeze.
3. A Displacement/Length Ratio of 265, tells us the Sadler 34 is 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 28.0 suggests that crew comfort of a Sadler 34 in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not encouraging news for anyone prone to seasickness.
5. The Capsize Screening Formula (CSF) of 1.8 tells us that a Sadler 34 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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