Boat Maintenance

These six-month and 18-month bottom paint test updates cover dozens of antifouling paints that were immersed in Florida waters.Tested paints include marine coatings from Blue Water, Epaint, Flexdel, Interlux, Pettit, Sea Hawk, and Copper Coat, an epoxy-copper blend that claims multi-year protection. BoatKoat Laminates experimental stick-on antifouling for sailboats also was included in the fray. Hard antifouling paints and ablative antifouling paints work differently and are intended for different applications. Find out which type best matches your sailing style and boat maintenance regimen. Testers flagged the best bottom paints in each category, including ablative paints, hard paints, freshwater paints, aluminum paints, racing paints, water-based paints, and eco-friendly paints. Copper-free bottom paints and low-copper coatings performed surprisingly well at the six-month mark.

The March 2010 issue of Practical Sailor features letters from readers on such subjects as: household adhesives, Union 36s, foggy electronics, digital freezer controls and converting a boat from gas to electric.

Today I went to paint the bottom of my boat with Interlux’s VC-17m, which I have used since it first came on the market. I had always cut/thinned the paint a bit with acetone. Today, the West Marine store manager (who is an experienced boater) told me that Interlux changed the VC-17m formula and that you should thin it with simple rubbing alcohol. When I used the paint with the alcohol, I noticed that it did not dry as quickly as it had with acetone and seemed thicker than usual after mixing the copper powder. Is it correct that you can now use isopropyl (rubbing) alcohol to "thin" VC-17m antifouling?

Practical Sailor recently spent a week experimenting with three handheld products geared toward performance sailors. These portable tools are for tracking and improving sailboat speed. Unlike conventional portable GPS units, which have relatively small displays and deliver a wide range of navigational data, these products display large digits that can be read from a distance, and the view options are limited to those that relate exclusively to speed and racing performance. Practical Sailor tested the Speedwatch and two GPS units, Velocitek SC-1 and SpeedPuck. These instruments make good training tools for young sailors and will give all around-the-buoy sailors the ability to quickly quantify performances.

A bottom-paint job is unpleasant from start to finish, and wiping down the hull with acetone plays a role in that unpleasantness. So when a Cinnaminson, N.J., company sent us an acetone alternative called Bio-Solv, we were more than keen to test it. Bio-Solv is a non-toxic, non-flammable cleaner that works better and is safer than acetone, lacquer thinner, or Xylene, according to Anthony Severino of MAS Epoxies, which began selling Bio-Solv last year. The company buys it from a proprietary manufacturer.

The February 2010 issue of Practical Sailor has letters on the following topics: requests for more used boat reviews, foggy electronics, hard varnishes, propane fridges and Iphone apps.

Practical Sailor searched for the top liquid degreasers to tackle heavy grease on marine stoves and marine engines. Eleven products were tested, including Chomp oil eater, Holy Cow degreaser, Kafko degreaser, Krud Kutter degreaser, Mary Kate Grease Away, Star brite All Purpose Citrus Cleaner Degreaser, and Star brite Sea Safe Cleaner Degreaser. Practical Sailor tested the liquid marine cleaners on grimy fiberglass panels and on aged, greasy farm equipment engines.

To decide which marine inverter-charger best meets your onboard power demands, first consider how it will used, how and where it will be mounted and what is required to fit with your electrical system. After testing multiple marine inverter-chargers, Practical Sailor offers this report on the units’ inverter capabilities and a follow-up review will report on the units’ charger functions. There are two classes of marine DC inverters: true sine wave (TSW) and modified sine wave (MSW). Each uses a different method to produce AC voltage. Practical Sailor evaluated modified sine wave units from Charles Industries, Magnum Energy, ProMariner, and Tripp Lite, and true sine wave units from Magnum, Mastervolt, ProMariner, and Xantrex.

If you think your boat is a bear to maintain, you might take some consolation in this months used-boat review of the Union 36. It is a fiberglass boat, but considering the amount of teak on deck and belowdecks, it might as well be made of wood. Not that there is anything very wrong with that. The 32-footer my wife Theresa and I cruised on for 11 years was very similar-a big, heavy double-ender-and ours was made of wood. While our 1937 William Atkin Thistle design differed significantly from the Union 36 and the modern double-enders that Bob Perry would later unveil (the Tayana 37 and Valiant 40, among the better known), these boats can be broadly traced to a common ancestor: the North Sea rescue boats designed by the renowned Norwegian naval architect Colin Archer.

Practical Sailor found that the full brightness that LEDs offer, coupled with a huge energy savings, a wide tolerance to voltage changes, and a very long expected lifespan, make LED a great alternative to incandescent lights for masthead tri-color. The tradeoff is the considerable heft of the price tag. Practical Sailor tested LED tri-color lanterns from Orca Green Marine (OGM), Signal Mate, and Lopolight. We also evaluated LED tricolor bulbs designed to replace those in the popular Aqua Signal Series 40 tri-color light. Those were bulbs from Lunasea, Dr. LED, and LED Shop.