Boat Maintenance

The paint samples were applied to 6-foot-by-2-foot fiberglass panels for testing. Testers follow the makers’ instructions for preparation and application. There were 11 samples per test panel. All but four samples had two coats of paint.

Last November, we began field trials of Mussel Buster, a baked-on powder coating that relies on its slick, hard coating to prevent barnacles from adhering. After six months, the prop was surprisingly clean. A few small barnacles had appeared, but they wiped away easily with the sweep of a hand.

When deciding on a process for clearing antifouling paint and coatings off the bottom of your boat, first define your goals and try to be as minimally invasive as possible. If your boat bottom needs more than a scrubbing but less than a full peel, sodablasting is a technique that will strip bottom paint but leave gelcoat intact. The unique softness of the calcium carbonate powder in sodablasting is effective, and the tented setup keeps the old coating contained. This report outlines the sodablasting process, calculates the cost in time and money, and compares its performance and cost-effectiveness to other bottom-stripping techniques we've tested.

An easy way to compute the do-it-yourself labor commitment involved is by timing how long it takes to scrape clean two 1-square-foot patches. The first is in the center of the least well-adhered paint; the second is in the midst of an intact portion of the bottom. Dry scrape each section with a thin-bladed putty knife and a sharp drag-type scraper, noting the time it takes to remove about 90 percent of the coating.

Our foray into sodablasting follows years of testing several different ways to remove bottom paint. Although you can simply attack the bottom paint with a power sander (an 8-inch sander-polisher is probably the most common tool for this purpose), this approach is messy, back breaking, and can expose the do-it-yourselfer to various health hazards. It can also lead to dings and divots in the gelcoat caused by overzealous sanding. Many yards prohibit do-it-yourselfers from sanding antifouling, or offer specific guidelines on how it can be carried out-often prescribing a chemical stripper to help contain the paint residue.

Letters to Practical Sailor, October 2011. This month's letters cover subjects such as: DIY Dingy Wheels, Infant PFD Field Test Phone Foulies, and More!

Letters to Practical Sailor, October 2011. This month's letters cover subjects such as: SI-Tex, Bosworth, Seoladair and More!

Why is it that folks who tuck their dogs into fancy hand-knit sweaters seem to be the same ones who leave their boats unprotected through northern winters? Snow, ice, air pollution, and sunlight, combined with alternating periods of freezing and thawing, can age a boat must faster in the winter months than in the more moderate climate of summer.

Each year, as the fall boat shows—and the deals that come with them—appear on the horizon, we pore over the numerous products we’ve reviewed in the previous 12 months to select the cream of the crop for our Editor’s Choice awards. We hope the list will help readers better navigate any boat-show or end-of-season shopping. This year, we picked from the Best Choice products evaluated in the September 2010 through August 2011 issues. The 2011 GOTY roster includes an electric outboard, some stout bullet blocks, electric marine toilets, bilge pumps, chafe gear, and marine maintenance products like bottom paint.

With the gazillion marine maintenance products out there, it’s an annual challenge to narrow the field down to just a few superior products for our Gear of the Year (GOTY) list. This year, our top maintenance picks came out of our endless antifouling-paint testing and our performance evaluation of multi-purpose cleaners—products we suspect most of you buy and use regularly.