The Bowman 57, a staysail ketch, was designed by Holman & Pye and built in the UK by Bowman Yachts Ltd.
1. Sail Area/Displacement Ratio: 17.1
2. Ballast/Displacement Ratio: 38.1
3. Displacement/Length Ratio: 220
4. Comfort Ratio: 37.6
5. Capsize Screening Formula: 1.7
1. A Sail Area/Displacement Ratio of 17.1 suggests that the Bowman 57 will, in the right conditions, approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.
2. A Ballast/Displacement Ratio of 38.1 means that a sailboat like the Bowman 57 (which doesn't have its ballast concentrated in a bulb at the foot of a deep keel), is likely to benefit from being reefed early to keep her sailing upright in a moderate breeze.
3. A Displacement/Length Ratio of 220, tells us the Bowman 57 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 37.6 suggests that crew comfort of a Bowman 57 in a seaway is similar to what you would associate with the motion of a moderate bluewater cruising boat - a predictable and acceptable motion for most seasoned sailors.
5. The Capsize Screening Formula (CSF) of 1.7 tells us that a Bowman 57 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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