Anchor choice

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Anchor choice

Mark D
When I sold my Memory 19, the anchor, a Danforth stowed under the floorboards, went with it. It worked well but is not the easiest permanent shape to stow on my wood Swallow Bayraider 20.

I now need to choose an anchor and I am considering all options. I have found the collapsable grapnell that came with it basically useless except on a rock bottom, and I still don't trust it.  As far as I am concerned it is only good for setting on a beach.

Of the choices available, I am looking for one that works in all bottoms, has or folds to the fewest protruding bits to poke through the plywood of the boat in rough weather, and is light (though I know that is logically the opposite of what is required for good holding but I carry a good length of chain).

Has anyone tried this?

https://www.force4.co.uk/manson-racer-anchor-m.html?sqr=fisherman%20anchor&
or this
https://www.force4.co.uk/plastimo-britany-anchor-8kg-m.html?sqr=anchor&

Everyone has a favorite. What's yours and why?
Mark
"Pippin"
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Re: Anchor choice

John Lidstone 1503
Hi Mark, not answering the question you asked but.... my view is if you want to avoid too much weight, ditch the "good length of chain". You only need 2m maximum to avoid chafe of your warp on the bottom and the weight would be far better "spent" on the actual anchor in order to get penetration of difficult bottoms.
In the past I have argued in favour of heavy chain in order to keep the pull horizontal but in practice, unless you use all chain or a massive amount, any significant force will pull the chain nearly straight anyway. Nylon warp at 5 x depth will provide the necessary shock absorption and angle of pull.
Regards
John
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Re: Anchor choice

John Perry 710
In reply to this post by Mark D

Hi Mark, always happy to chat about anchors, a favourite DCA topic!

Both the anchors you provide links for seem to me to be variations on the Danforth concept so I guess that they may both be subject to a design flaw in that a lump of mud, a rock or some debris on the seabed could get between the shank and the flukes.  The anchor will then continue to hold until the tide turns, but as the tide turns the anchor may flip over with the flukes now jammed pointing up away from the seabed so that they cannont dig in.  I recall a good many years ago this happening to a Wayfarer dinghy that was anchored in Bradwell creek in essex.  With the anchor dragging the tide carried the boat right out of the creek and when a launch from the sailing school went to recover the boat it became clear that the pivoting action of the anchor flukes had been jammed with a clod of sticky mud.

On our 15 foot dinghy we have for the past 40 years used a folding grapnel anchor and a copy of a CQR anchor, both about 10lbs weight with rope warps, no chain.  I dont think these are the best anchors in terms of holding ability but they fit neatly in a compact 'tray' I made to stow them in the boat and that is worth quite a lot to us since we dont have much room in the boat.  I am reasonably confident that they will hold if used with adequate scope on good holding ground, espeicially if both anchors are used together, however they have certainly dragged when the seabed has been less suitable.  The CQR style one did once drag on what looked like reasonable holding ground and the boat ended up over a flooded public road with the tide going down!  The story about that embarrassing incident is in a DCA magazine rally report which won the editors prize for best rally report, I think in 2017. I find that the  folding grapnell anchor is generally superior to the equal weight CQR type and it is very compact when stowed so I dont think it is such a bad anchor as some people say, I wonder if it is just the very small grapnells that people find unreliable.

As it happens I have recently been looking into anchors for a boat much larger than a dinghy and from various writings and videos on the internet it would seem that the aluminium 'Spade' anchor would be a good choice if you are looking for the best anchor regardless of cost.  Although the Spade anchor is aluminium and light in weight for its overall size the weight that is actually applied to the tip of the fluke, which may well be what matters, is higher than for a steel anchor since there is a lump of lead in the pointed fluke.  I think Spade anchors are mostly used on larger boats but they are available down to 2.5kg,  The 2.5 kg aluminum Spade is £442 and the 4.5kg model, which might well be just right for a larger cruising dinghy, is £614  from Jimmy Green chandlery

https://jimmygreen.com/anchors/38027-spade-anchor#/4568-finish-aluminium/6008-anchor_size-4_5kg


On 01/02/2019 16:26, Mark D [via DCA Forum] wrote:
When I sold my Memory 19, the anchor, a Danforth stowed under the floorboards, went with it. It worked well but is not the easiest permanent shape to stow on my wood Swallow Bayraider 20.

I now need to choose an anchor and I am considering all options. I have found the collapsable grapnell that came with it basically useless except on a rock bottom, and I still don't trust it.  As far as I am concerned it is only good for setting on a beach.

Of the choices available, I am looking for one that works in all bottoms, has or folds to the fewest protruding bits to poke through the plywood of the boat in rough weather, and is light (though I know that is logically the opposite of what is required for good holding but I carry a good length of chain).

Has anyone tried this?

https://www.force4.co.uk/manson-racer-anchor-m.html?sqr=fisherman%20anchor&
or this
https://www.force4.co.uk/plastimo-britany-anchor-8kg-m.html?sqr=anchor&

Everyone has a favorite. What's yours and why?
Mark
"Pippin"



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Re: Anchor choice

Mark D
John, thanks for the considered reply.

I am considering the collapsible Mantus anchors as I would only use it when the grapnel is inadequate. Has anyone tried these?
https://www.mantusmarine.com/product/2-5-lbs-lbs-stainless-steel-mantus-dinghy-anchor/