Well, even though the boat was in fresh water, the stainless screws in
the galvanized strap had made a rusty mess. The corrosion by products
also seem to have effected the plywood under the glass so the screws
pulled out easily. As soon as you cut this stuff, the zinc protection
is broken. Normally, galvanizing self heals to some extent but the
presence of the stainless may interfere with this process.

--

Roger Long



"5200" wrote in message
...
On Fri, 27 May 2005 22:08:57 GMT, "Roger Long"
wrote:

I just discovered that the poly holding tank in our boat is secured
(or was until the screws pulled out) with galvanized steel
strapping.
Gawd, the former owner loved the stuff, it's even holding up the
exhaust hose line.

Obviously, I've got to come up with something else. I can think of a
number of alternatives but, if anyone has done something they think
worked particularly well, I'd like to hear about it. I want to be
able to get the tank out easily and not risk abrading it if it
shifts
around with the motion.

I bought a homemade boat which features the original galvanized
steel
strapping from 25 years ago throughout. Guess the guy was a plumber.
It's holding fine. I splurged on some stainless screws when I moved
something. Felt like a king. I also cut up sheets of that cheap shop
floor matt material for dampening and scuff resistance as needed. I
built a 2" high frame to keep the holding tank from moving around
and
wedged some matt shims in.
smooth sailing or motoring or paddling or drifting or whatever.