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From: Kerry Thomas (no email)
Date: Sat Jan 05 2008 - 17:32:48 EST
There is a reason why you see a CQR on the front of most commercial boats.
Real world test 2 days. 70 knots in Tryphena. Rope rode. Great Barrier.
which is noted for poor holding. Didn't move an inch. Tho, Hell of a job
getting it up again. We saw several other types of anchors on the boats on
the beach.
Kind Regards
Kerry Thomas
www.altairmarine.co.nz
-----Original Message-----
From: [mailto:]
On Behalf Of Kim
Sent: Sunday, 6 January 2008 8:03 am
To:
Subject: [world-cruising] Re: new anchor designs
"Here are more thoughts on the Rocna/Spade debate than you may want:
http://morganscloud.com/aacblog/labels/Anchoring.html
At least some of it is the result of real world experience with the
Spade.
Best regards,
Collin"
----------------------------------------------
Collin, you are correct the debate does go on and on..
I haven't used the Rocna so I can't comment on it's performance. I did go to
the Rona website and viewed the anchor testing video.
One thing I did notice regarding the Rocna test technique was that the
anchor and the chain laid flat on the ground the whole time while the load
was put on the anchor with the chain remaining flat on the ground.
I have used all chain for 20 years and every time I have set the anchor (by
backing down) the chain has always lead down to the anchor at a sloping
angle down from the bow. The only time the chain lays flat on the bottom is
when there is no load on the anchor. So I am not surprised that if you drag
a Bruce with the shank kept flat on the ground, it may not set. But, if you
raise the shank up to an angle similar to an actual anchoring attempt the
Bruce will set.
Over 20 years I have use many types of anchors, and still have most of them.
Over the years I have reviewed the results of three different anchor tests
that were conducted from boats, with strain gauge, conducting actual
anchoring, and setting the anchors and loading them until they set and to
the point of dragging. All types of anchors were tested.
There are lots of test results on the web.
If you are going cruising you will definitely need more than one type of
anchor design.
Kim
[Non-text portions of this message have been removed]
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