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Old 10 October 2008, 02:53   #11
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Originally Posted by Locozodiac View Post
A (boats 5" to 10") weight 5.5 lbs
B (boats 5" to 15") weight 7.0 lbs
C Stick with your real anchor

I used a grapnel once with a SIB, now I invariably take a small danforth.

In my view and experience folding grapnels are for canoes or jet skiis, lunch-hook is an excellent name for them.
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Old 10 October 2008, 11:28   #12
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If I got the idea correct: the anchor is no good because cannot secure itself properly or well burried on sandy bottoms, or even securing properly will free itself easily ? Would it be a matter of adding extra weight to the anchor or maybe larger & thicker chain, etc.
No, an anchor works by a combination of anchor weight (ensures that the anchor penetrates the substrate), fluke (or other equivalent displacement object) design such that it a) orients itself to set, and b) tends to bury itself deeper with greater pull. The chain is there to make sure the anchor line pull stays in a relatively horizontal direction at the anchor (also helps avoid chafe, but that's a different matter.)

The problems with the grapnels is that a) it's not heavy enough at the flukes to penetrate the bottom very well, and b) the flukes are relatively tall and thin (not to mention sitting in the bottom at 45 degree angles), and offer very little resistance in soft bottom compositions.

Compare that to, say, a Danforth, where the anchor weight as it sets is brought to bear on the two fluke tips, which helps it penetrate. Then once it's buried, the entire flat surface of the flukes offers resistance to pullout.

Grapnels work well on irregular hard bottoms (make sure you have a trip line rigged), but are useless on smoothish hard bottoms or just about any soft bottom.

jky
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Old 10 October 2008, 11:49   #13
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The Delta is probably the best all rounder. It is great in sand/mud and works fairly well in rock without getting too badly stuck. It is like a a CQR without the annoying hinge.

The Bruce is great but can get a rock stuck in it's flukes.

The Danforth is prob the best in sand/mud but not much good in rock.

Here are some Deltas I sold the other day - I kept the 6kg for my RIB - the others were a bit big!!
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Old 10 October 2008, 12:12   #14
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OK, anchor gurus, thanks all for the tech advise, so a small damforth is the way to go on sandy/muddy beaches, that's the model regularly used, the advise was for a grapnel anchor that have not the possibility to see, ask about or test.

Happy Boating
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Old 10 October 2008, 12:50   #15
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The Delta is probably the best all rounder. It is great in sand/

Here are some Deltas I sold the other day - I kept the 6kg for my RIB - the others were a bit big!!
hi codders ,whats the holding power of the 3 bladed one ,
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Old 10 October 2008, 17:23   #16
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hi codders ,whats the holding power of the 3 bladed one ,
Thats not an anchor - I bought that to generate electricity from the local rain water sewer.
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