August/September 2022 — Table of Contents
On the cover: After losing part of the starboard bow halfway between Hawaii and the U.S. West Coast, the crew of the Seawind 1160 catamaran JollyDogs improvised a fix to protect their collision bulkhead by filling the bow cavity with buoyant flotsam from the Pacific garbage gyre so they could complete their sail to Port Townsend, Washington.
Photograph by Mark Hardesty.
FEATURES
Courtesy MICHAEL JOHNSON Building a new bow. Page 18.
18 Unbowed
by Mark Hardesty
After a midocean collision, a couple made emergency repairs and sailed 1,600 miles before fixing the damage.
ALEX HEATH Hull alignment experiment. Page 34.
34 Slightly Askew
by Christopher Murman with Alex Heath
An experimental CFD analysis of sailing catamaran hull alignment.
NIGEL CALDER Preventing galvanic corrosion. Page 46.
46 Corrosive Behavior, Part 2
by Nigel Calder
Taking active bonding and cathodic protection measures to prevent galvanic corrosion.
L. SANDERS Swollen overcharged cells. Page 58.
58 An Unfortunate Series of Solar Panels
by Rod Collins
Lessons from a cascade of failures in series-wired solar panels.
HENRI THIBAULT Carlo Riva. Page 64.
64 Carlo Riva Revisited
by Gérald Guétat
Reviewing the achievements of an iconic builder of famous luxury runabouts, who would have turned 100 this year.
DEPARTMENTS
4 Letters, Etc.
A reader comments on the safety of lithium-ion batteries and how he talks with owners about them.
8 Rovings
compiled by Dieter Loibner
RaceBirds, a new one-design class of foiling electric raceboats; retirement of the Charles N Curtis, a Prohibition-era patrol boat that has served the Sea Scouts in Washington State since 1946; reducing debulk cycle frequency with Hexcel G-Vent prepregs; and a lighter, stronger folding cleat from Germany.
42 Task Sheet: Propeller Installation
by Steve D’Antonio
Fitting and securing a propeller to a shaft to avoid vibrations, poor fuel economy, and catastrophic propulsion failures.
76 Parting Shot
by Bruce Pfund
Our former technical editor takes stock of recent advances in electrical propulsion and finds little comfort there.
READER SERVICES
70 New Products and Processes
71 Connections
72 Classified Advertising
