On Sat, 16 Jul 2016 22:36:59 -0400, Alex wrote:

wrote:
On Sat, 16 Jul 2016 09:33:49 -0700 (PDT), True North
wrote:


" My guess is â€*he salty air/water in Floriduh is more corrosive."


My captain buddy in the British Virgin Islands insists that the salt concentration is higher nearer the Equator.
He knows a lot more about boats than The StinkyOne.
The real issue has more to do with temperature than salinity. Heat
makes chemical reactions go faster. Once you get over 30c, bad stuff
happens fast. The same is true about the nasties in swimming pools. My
Dutch neighbor does not understand that. The things that he does with
his pool in the winter around here (24-25 water) just will not work in
the summer. I declared a mutiny, changed the timer on his pump and
cranked up the chlorine generator, after it turned into a frog pond.

As for the rust thing, in tropical salt water, hot dipped galvanized
will rust out in 5 or 6 years.

I'm surprised they would last that long. 304 stainless doesn't fare
well in the salt.

304 will develop surface rust but it stops there. Once you get through
that galvanizing, regular steel keeps going bad.