Lots of passionate opinions expressed here -- I wonder what it is about anchors that gets folks' plood pressures wound up so tight?
Anyway, you mentioned being able soon to do a side-by-side comparison of the Rocna
and Manson anchors. May I suggest that you take some sort of measuring gear
with you, and actually measure the shank cross sections at their smallest points. Then determaind the grade of steel
used in the shank. From these data you can get a good idea of their relative strengths. Then, compare this strength to that of your chain... I expect that you will find that both designs are far stronger (in tension) than even high-test chain. Then consider other weak points... I wonder if the welded joint between shank and fluke isn't the critical factor? And then ask your "welder bloke" about welds between the rolled steel
shank and a cast fluke such as the Chinese Rocna uses. I'm not an expert, but the metallurgy of the two kinds of steel are different enough that such a weld might be tricky, and QA would be essential.
Finally, as others have said, I very strongly doubt that you would ever be able to tell the difference in performance between similar size Mansons and Rocnas. They are both good anchors and either will serve you well. Determaining who copied who in truth would tax Sherlock Holmes, and frankly, I don't care... I just want a good anchor!
Oh, for the record
, we use a Manson Supreme 60 lb on Insatiable II, and have found it to work
better than any previous anchor
. We never use the long slot to attach the chain, but do have a shackle in the slot. When anchoring
in questionable bottoms, one can attach an anchor bouy to that shackle, giving an easy means of dragging a fouled anchor out backwards.
So Erika, I hope that you can soon come to a conclusion that you are comfortable with and then get on to worrying about a new quandry!
Jim and Ann s/v Insatiable II lying Lake Macquarie, NSW, Oz