I helped on a delivery of a catamaran in the Caribbean. It had been surveyed before our arrival. The surveyor said there were many voids (blisters) in the...
Well, as far as the thing is complete and in (even "needs TLC" ... ) working condition now, this might be the way to go some years in future, just in case...
I have heard that zincs should be replaced when 50% depleted. Others say right down to 90%. Any opinions? Also... if suddenly zincs were not available what...
On the internet looking at zincs and I found this galvanizing repair stick--would it be of any use?? I notice on my mast that the tangs have stainless inserts...
I haven't seen anyone answer your last question. That's a difficult one. Cadmium, lead and aluminum have been used historically for the cathodic protection of...
I think the reason they say 50% is so that it will last until the next haulout, assuming it used 50% since the last one. I can't see any other reason. I give...
I am not sure if aluminum is a good choice as anode. Does not it suppose to form protective layer on aluminum's surface when it exposed to oxygen? Galvanic...
Alu as sacrificial should be pure alu. the palte is alloy, more resistent and less effective. (I believe) Mauro ________________________________ From: Paul...
As I remember, Aluminum Oxide (even thin layer) on aluminum wires is a good dielectric. That why Alum wires need special electricity conductive grease to...
Yes aluminum forms an oxide when exposed to air. One is not permitted to install aluminium wire in homes in Canada, however, there are many homes in which it...
The front corner of the deck is 5 1/4 inch out of square. The first measurement aft of that , from the straight edge, is 2ft3 inches, then 2 ft 5 1/2 inches,...
I use them til they fall of the straps. They seem to keep working til they do. Mine are gone. Expect to re weld them this summer sometime. No panic. With a...
When used as a sacrificial anode the oxide layer is removed by the the flow of current, which continuously eats away the aluminum. When welding aluminum you...
Thank you Brent, that is great! The only time I have these days is after dark so I have been working under 500watt construction lights. The shadows are so bad...
Chris Surveyors whose main clientele are yacht owners don't survey steel very often - I would guess a surveyor who regularly surveys commercial vessels might...
Going down to the yard later in the week. Its located along Lake Erie in a small port that I found while cruising the lake shore on a Sunday. The only...
IIRC the problem arises from the disparte coefficients of expansion between the Al wire and the connectors. Over time, this causes the connection to break...
I think a surveyor who regularly does commercial boats is a better surveyor for ANY boat you plan to go offshore in. They are far less likely to do a "Style...
Actually, the first successful Al sacrificial commercial anode was the Al3Zn (3% zinc) alloy. Later developments showed that tertiary alloys of AlZnSn and...
