Professional BoatBuilder Issue No. 162

August/September 2016 — Table of Contents

Cover image On the cover: In anything but glassy sea conditions, recording the precise swing of a pendulum in a motion-dampening container of water can be the most tedious and ticklish part of performing an on-the-water inclining experiment—a necessary chore that allows boat designers and builders to verify vessel stability. Story on page 24.
Photograph by Butch Dalrymple-Smith.


Inclining experimentsButch Dalrymple-Smith

Inclining experiments. Page 24.

24 Best of Inclinations
by Butch Dalrymple-Smith
A designer looks at the importance of quantifying vessel stability, along with a variety of on-the-water inclining experiments to determine or to verify it.

Handling the effluent. Page 38.Steve D’Antonio

Handling the effluent. Page 38.

38 Blackwater Guide
by Steve D’Antonio
A sanitation system can be functional, odor-free, and (mostly) worry-free—if you choose the right materials, equipment, and techniques for design and installation.

The newest IMOCA 60s. Page 52.Jean-Marie Liot/DPPI

The newest IMOCA 60s. Page 52.

52 Vendée Evolution
by Brian Hancock
From “Dali foils” and canting keels to rudder tubercles and standardized masts, the latest IMOCA 60 offshore racing sailboats are designed to optimize performance in the Vendée Globe.

Refitting a vintage Bertram. Page 76.Courtesy Owner

Refitting a vintage Bertram. Page 76.

76 Storm Chasers
by Dan Spurr
A team of raceboat specialists and skilled boat restorers collaborated on the resurrection of White Tornado, a vintage Bertram.


6 Letters, Etc.
Readers comment on when a foil is not a fix; surveyor credibility; and another case of an infusion gone wrong made right.

12 Rovings
compiled by Dan Spurr
Calcutta Marine’s all-carbon cat; air winches for hard sails; Green Marine update; remembering naval architect Ed Dubois; a kite-powered foiling trimaran; and Quadrant celebrates 20 years of marine training.

96 Parting Shot
by Steve D’Antonio
When a professional mechanic shows up with nothing but a scan tool or laptop to evaluate an engine and its installation, it’s not a good thing.


89 New Products and Processes

90 Connections

93 Classified Advertising

95 Index to Advertisers