Mailport & PS Advisor

If I use 3/8-inch Acco G43 proof-coil chain, why is the same-size galvanized shackle so much weaker? West Marine shows the Acco G43 chain rated at 5,400 pounds maximum working load (MWL), but the similarly sized shackle is rated at only 2,000 pounds MWL. It seems as though whatever size chain I select, the shackle is the weak link. How can I use a larger shackle on smaller chain?

As requested in your July 2015 article, Keeping Water Clean and Fresh, we are suggesting an evaluation of the two-part liquid Pristine (www.pristine.ca) and the Puri Sol water treatments; both use a process utilizing chlorine dioxide for killing bacteria and viruses in contaminated water. This means of sanitizing is purportedly used in hospitals in Europe, and in our experience, it is easy and effective. We have used it in the flexible bladder tanks that were original equipment on our motor-sailer for many years. It is used, apparently, by the military, as well.

Im in the process of installing new teak and holly veneer in the interior of my boat. I have the old floor out and have the new plywood/veneer cut. I am ready to varnish/seal the new veneer, but I am in gridlock as to how to go about it.

I just received the June issue and was pleased to see the sandbaggers Bull and Bear on the cover. However, when I looked inside for the cover photo description, I saw one, possibly two errors. The description reads: The replica 1860 Sandbaggers, Bull and Bear, offer students in Maine a real-world exercise in sailboat stability.

I just received the latest Waypoints e-letter about gel batteries, where you state they must be charged at no more than about 14.1 volts. We do not use gel batteries in our boat, but do in our camper van. As I understand, Trojan deep-cycle gels can be charged up to 14.4 volts and East Penn marine gel batteries up to 14.6 volts, so why are you recommending the lower voltage?

I just read your latest review on bottom paints (see PS, April 2015 online). It was a real head-scratcher to us. We just put a new coat of Interlux Ultra on the bottom of our Macintosh 47-the same paint as we had before. That bottom job had lasted 43 months! And the prior bottom job with Ultra had also lasted over three years.

The Simpson Lawrence Horizon Express windlass on my boat needed maintenance, and I was dismayed to find a note on the Lewmar website that says Lewmar no longer supplies spares for the old Simpson Lawrence windlass range; it advises contacting John McMaster from SL Spares (www.slspares.co.uk).

Any suggestions for an SSB-radio antenna installation on a 32-foot boat with a gaff rig and no backstay? Also, the hull is mild steel, and the standing rigging is galvanized wire, except the forestays, which are stainless.

Spring is a good time to check your fire extinguishers to be sure they havent expired, but if you own a Kidde extinguisher, youll want to also be sure yours wasnt part of the companys recent recall. Well-known fire extinguisher manufacturer, Kidde, in conjunction with the U.S. Consumer Product Safety Commission (CPSC), announced a voluntary recall to replace certain Kidde fire extinguisher units, according to Boat Owners Association of the United States (BoatUS).

In regard to your March 23, 2015 blog on bird deterrents: I moved to Florida a few years ago and was the only sailboat in a 20-slip location. Little black birds infested it right away. I tried flying owls, kites, balloons, sitting owls, snakes, etc., and nothing worked for long. Those little black birds would sit on top of my Windex and spin around, and poop all over the boat.