I am in the process of building a permanent mooring and have a heavy
galvanized anchor as well as several lengths of galvanized and
stainless. However I have heard stories about rapid galvanic corrosion
when connecting stainless and galvanized together under water.

My question is, can I (should I) connect the heavy length of stainless
chain to a lighter length of galvanized chain and to the galvanized
anchor using stainless shackles and swivels? Or with galvanized
fittings?

I would normally plan on inspecting the mooring on a annual basis.

The reasoning in mixing materials is basically that I've got the two
lengths of chain and if useable need only to buy the shackles and
swivel.

Anyone with personal experience or specific knowledge of joining
stainless and galvanized in seawater?
--
cheers,

Bruce in Bangkok