The stainless steel bracket above
and the three below show just how important an inspection and/or
replacement of fasteners can be. These swim platform brackets and
fasteners were removed from a boat soon after one bracket failed.
Note the condition of each bracket weld and fastener. You will note the different
fazes of deterioration each bracket and fastener had reached.
This stainless trim ram was
leaking fluid, only when fully tilted up, for almost no apparent reason,
until the ram was disassembled. For some reason this ram shaft had
started to corrode yet the other shaft was almost perfect.
This welded stainless rail stanchion
fitting is starting to fail at the weld. Some of the corrosion pin holes
are all the way through the pipe.
These stainless hose clamps are a
good example of what to look for when checking your thru-hull fittings
and hose connections. Although these clamps were on the same hose, right
next to each other; the top clamp had failed and could not be tightened.
Corrosion had eaten the screw threads and the clamp just popped off by
Reducing the rate of corrosion
of metal parts on a boat is often achieved by installing
sacrificial anodes and bonding metal parts together with
earth ground wires and/or bonding buss straps. Testing and maintaining
these protective systems is an important on-going required chore.
For more info about corrosion
damage try this.
[or try this
about galvanic corrosion.]
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