Quote:
Originally Posted by NoBozo
"...ALL Galvanized chain, shackles, and fittings are far superior to Stainless Steel..."
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Not all galvanized steel (or stainless) is of high quality, so I wouldn't make that generalization: for example, I gave my BIL a one-inch solid diameter galvanized eye bolt for use in his concrete mooring block. After only about eight years in the lake, it got very ugly, and we're not trusting it another four or five years in
this lake.
A ½-inch diameter galvanized U-bolt used on our original mooring block has disappeared entirely after 54 years. (Well, there are two brown spots remaining.
)
As to narrow anchorages, a new
Chapman NIB text—marked "100" at a yard sale, which turned out to be just $1
—suggests
three mooring blocks. Two should be placed to the strongest wind direction and all three attached together with chain with a central shackle pickup point.
Chapman advises "
hot-galvanized" steel, which may be that process that wrinkles the galvanized finish to a thicker coating.
Chapman also suggests switching mooring chains end-for-end each season. (Although a heavy nylon line should be fine for a 19' sailboat mooring). A friend just ½-mile from me has been using a stainless steel mooring
cable—for 40 years! (For a 19' Cape Dory
Typhoon sailboat).
For confirmation of the suggestion found in
Chapman, check out
this chain:
http://www.winnipesaukee.com/forums/...06&postcount=5
Quote:
Originally Posted by Dave R
"...Most crevice corrosion takes place well above the waterline on boats..."
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Crevice corrosion was covered in a recent copy of
Sail magazine.
Since I seek-out new (and used) stainless steel objects at every opportunity, I discovered some deep crevice corrosion on a very important object that hasn't been covered in this thread.
That piece was a boat's 2nd-hand
bow eye!
