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Recent Posts by Ed Sherman

Bonding and Anodes In Galvanic Corrosion Protection

Last week our friends at Performance metals sent along the following press release discussing the why of on board bonding systems. Its a short but informative read so I thought I’d share it with you all: Bonding, in its simplest form, is internally connecting all the underwater metal parts of a boat such as thru-hulls, rudder stocks and shaft struts Continue Reading »

Cathodic Over-Protection

Cathodic Over-Protection

Back around July 4th I was asked by an old friend to look over three very expensive antique wooden boats that were just beginning to show some strange activity in the bilge areas of the boats. Keep in mind here that these weren’t a collection of derelict wooden junk heaps ready for the scrap pile, but three classic yachts that Continue Reading »

Upgrade to Lithium Tech?

The Marshall Cat Boat shown above is equipped with electric propulsion and powered by Mastervolt Lithium Tech batteries. So this week I’m going to share an increasingly common question and my answers to them regarding lithium tech batteries. “Ed: I have a 44′ sailboat from the 80’s with two Group 8D batteries for the house bank. I am thinking about Continue Reading »

Shore Power Can Be Lethal

Shore Power Can Be Lethal

Seems like people seem to forget that 120 volts can be lethal. The photo above was sent in by one of my surveyor friends, Dexter Holiday. The photo was taken aboard one of the boats he surveyed recently.  There are several glaring errors with the boat owner installed AC receptacle shown. First, the green screw you can clearly see is Continue Reading »

Spring prep is for the birds…

Spring prep is for the birds…

OK, so this is not one of my usual techno mistake photos, but I just couldn’t resist this one from a surveyor friend down in the Annapolis area, Derek Rhymes. Since the owner of this boat is going to want to apply anti-fouling paint to the inside of this bow thruster tube, this robin’s nest is going to go through Continue Reading »

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