On Oct 30, 5:29 pm, nick wrote:
... The Rocna is designed and made in New Zealand. A very similar anchor is
the Manson Supreme, also designed and made in New Zealand. I have seen
a slinging match online about who copied who but nonetheless, they are
both very good anchors. ...

They are both developments from a European anchor style (originally
Bugle?) which had the roll bar but with a flat triangle as the plow
blade. There are lots of these around on European boats. The Manson
Supreme and Rocna mated this with the concave blade of the Spade.
They should, pound for pound, have more holding power than a
conventional plow.

-- Tom.