Inside Practical Sailor

Last year, multi-national chemical company BASF decided it would not renew its U.S. license for the pesticide Irgarol. A common additive to copper-based paints, Irgarol helps prevent the growth of algae and other soft growth. Bottom paints containing Irgarol are priced around $30 higher than similar formulas without the additive. If you are interested in a slime-resistant ablative paint, be sure to confirm that Irgarol is still an ingredient before plunking down the extra cash.

The oceanic equivalent of implacable in-laws, the barnacles addled me to no end. Do they ever stop eating? Do they ever sleep? Why wont they leave my boat alone? Their unrelenting click, click, clicks on the hull kept me up at night. An obsession bordering on madness set in. My only comfort was that barnacles on the brain can have interesting side effects, like an idea that changes our view of the world.

Anyone who has spent a night pitching in an exposed anchorage would not be shocked to learn that in many dragging incidents the snubber parted, or was stretched to its limit, allowing the chain and boat to absorb some teeth-rattling shock loads before something finally gave. Recently, PS testers have devised a series of tests to determine what the ideal snubber looks like. Some of our findings run contrary to popular assumptions. Some will surely surprise you, and may even-one day-save your boat. What does your snubber look like?

In my own experience, Ive found that I rarely can match the manufacturers coverage estimates using a 3/8-inch nap roller cover, so for this project we decided to do a comparison. One section of the boat would be painted with a foam, solvent-resistant hot-dog or sausage roller cover, a technique that has worked for me in the past. The roller, more commonly used for topside finishes, soaks up far less paint than a conventional, 3/8-inch cover. An adjacent section would be painted using a conventional roller.

This summer, the once lovely Oyster 825 was hauled from the water with its keel missing and a large chunk of skin laminate peeled back. Another casualty in a disturbing trend. I wrote a lengthy post on the subject of keels last year, and technical editor Ralph Naranjo discussed the topic in his report Rethinking Hull Structure in the February 2015 issue of Practical Sailor.

Our recent report on synthetic-teak decking options (see PS December 2015) raised a bit of a ruckus among the contenders in what is an extremely competitive market. The main bone of contention was our reported temperatures of the various materials after they were left in the sun. Several manufacturers contended that the temperatures we listed in the table accompanying the article were not consistent with their own findings.

The freeze-thaw cycle can also break the bond between the fiberglass and the core, further weakening the deck structure and introducing new problems. In a worst-case scenario, you return to your boat in the spring and find bubbles, bulges, and cracked gelcoat or fiberglass where water has pooled and frozen, pushing your deck's outer skin upward.

In part one of our two-part test of five and six-horsepower engines in the upcoming January issue of Practical Sailor, we take a second look at portable electric motors. Our interest in modern portable electric propulsion dates back to 2004, when then editor Doug Logan began to lose faith in the two-stroke outboard on his Boston Whaler. While awaiting the prognosis on his unresponsive 15-horsepower Evinrude, he bought a Minn Kota Riptide 55 trolling motor.

Two stories in the upcoming December issue-installing a fireplace and sealing portlights and hatches-had me pondering the challenges of a winter afloat. But what literally raised goose bumps were images sent to us by Jimmy Cornell, whose popular cruising rallies and books have inspired countless dreams of sailing around the world.

The more controversial-in my mind-element of open-source software is how our navigation data is used. The success of open-source software depends on the willingness of sailors to share data via the cloud. Were told, of course, that this is anonymous meta-data (the sort of non-identifying data with that the National Security Administration scrapes from phone records), and that the user can control which data he shares. Most of us are already sharing all kinds of information with various smart-phone apps, so this is nothing new. Still, I worry.