Boat Maintenance

Every fall, as the hauled-out boats are sardined into boatyards, a walking tour reveals the casualties from the underwater war. Saildrives are deeply pitted and shedding paint. Bottom paint is burned near seacocks. Folding props no longer fold. Most often, these losses are blamed on the zinc anodes-or lack of them.

The anodes were cleaned, weighed, and installed on 2-foot lengths of 3/4-inch, copper pipe (type M), which were also weighed. We hung the samples between slips in the mid-Chesapeake Bay near Rockhold Creek for one year, cleaning quarterly to mimic light use. At the end of the test period, the samples were cleaned with a plastic scraper and scrub brush, and their interiors were scrubbed with a snugly fitted multi-knotted rope. Testers gave them a light acid cleaning to loosen barnacle residue and scrubbed them again before weighing them. We also measured potential driving force and current for each anode before and after exposure. Salinity at the test site varied from brackish to seawater salty. We will be testing in full-strength salt water for a followup article.

Many years ago, one of our editors had an old wooden boat with lovely wooden handrails just inside the companionway that his sailing partner decided could use new varnish. The original coat, which was peeling around the base and worn where hands had gripped it, was sanded smooth and meticulously coated with varnish. Subsequent coats were applied according to the process that had served well for years-varnish, scuff, wipe, varnish, scuff, wipe . . . repeat.

In the January 2012 issue, we evaluated the application ease and traction performance of do-it-yourself nonskid options. A few months prior to the report, a Practical Sailor tester applied the tests Best Choice pick, Durabak, to the coachroof of his Chesapeake Bay-based 1978 Union 36; this served as a real-world test of the coating systems application ease and coating longevity. That field test has reached the five-year mark, so we wanted to offer an update on the coatings long-term performance.

Practical Sailor editors have put together a roundup of marine-related books that we think are deserving of a spot in your library. Most are new titles, and they run the gamut from fiction to how-to guides. Enjoy.

I am a relative novice to sailing, and my new-ish boyfriend is thinking about bringing his boat to Lake Superior, Mich. Hes one of those sailors who needs the best of everything, and he hopes to race, with me as crew. He asked me to inquire with the local racers what bottom paint they used, but there seemed to be no real agreement. Some use no paint at all. Does he even need any bottom paint?

Technical Editor Ralph Naranjos report on risk management in this months issue sent me scouring the Internet for the origins of risk. Most dictionaries trace the word back to the 17th-century Italian riscare or rischiare, translated as to run into danger.

We recently launched a new evaluation of marine adhesives and sealants. There is no single caulk that works in all of these cases, so its impossible to declare a single Best Choice adhesive, but we decided to at least put some numbers on paper to guide you in your choices.

Our test focused primarily on the small-wire connections tensile strength, with and without solder, but we also looked at their durability under tough environmental conditions. We tested the pull-out strength without solder and the pull-out strength of soldered connections at 400 degrees by heating the connections in an oven to simulate overheating conditions. We tested fatigue by spinning a 6-inch length of splice wire at 650 RPM in a simple device that we called the wire-fatigue whirligig. Finally, testers soaked all samples for four months in salt water to accelerate corrosion, and then, we repeated the fatigue test.

During my admittedly few winters above the frost belt, I have only fond memories of the last few days of the season. And Ive always admired those who didnt let the tilt of the Earth dictate the way they arranged their days.