I’m struggle with cost as well.. But if I would avoid flaking problem and no jam of the chain and at the same time double lifetime (at least?) = I’ll be happy to pay three times more for Duplex versus galvanized Maggi-Aqua7.
I posted was for Superduplex but ex VAT.
Including German VAT and electro-polished 8 mm, CROMOX made in Germany
price per meter:
Superduplex (ASTM A479), Grade 60 plus: €67.6
Duplex (AIS 318LN), Grade 60 plus: €39.2 (I will pay €38 x 60m + €113 shipping).
Another reply.. I guess reason why everybody use chain instead of rope
should be chain works much better in windlass
and you should probably have a mess of rope
box. But said that, I know for instance in Sweden
it’s very common to anchoring
with bow on and when Yachts have windlass
installed at aft, it’s standard to use lead-rope (no chain at all). What I have heard it works well (with special rope gypsy) but it’s obvious you will not have same efficiency in anchor
grip vs more heavy chain. You should complement with a system described earlier on in this thread. Then you have another disadvantage with rope, at least if you use rope all way, sharp rocks/other things could cut it off even if you don't swinging around much (In Sweden
you normally have very good anchoring
bottom (mud or sand) and no sharp rocks so there you may not need chain).