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Old 03-04-2011, 14:43   #1
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Cheap Fast Way to Make a Mooring

I have a 25 foot Chris Craft that I live aboard. The motor has been removed. I'm moving to a area that has no mooring. I have about 700 pounds of broken concrete. If I filled up a 55 gallon drum with the concrete and sink it will it hold the boat in place?
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Old 03-04-2011, 14:50   #2
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Re: cheap fast way to make a mooring

Is that a legal mooring in your location? Do you want to trust that the barrel won't rust out quickly? How would your mooring neighbors feel about that kind of install? Is going cheap on a mooring worth it in terms of liability or loss? Do you care how long it might last? Do you get my point(s)?
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Old 03-04-2011, 14:58   #3
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Re: cheap fast way to make a mooring

It will hold it but, that depends on allot of variables?? More info is needed.
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Old 03-04-2011, 14:58   #4
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Re: cheap fast way to make a mooring

You would find that your mooring chain would just tangle around it because of it's shape,also concrete is alot lighter in water.A train wheels are one of the best mooring blocks,i have 6 wheels layed in a circle on my mooring 1.25in double bar stud link ground chain linking them together and a heavy gound chain is the way go on any mooring so the boat rides better in a storm.
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Old 03-04-2011, 15:27   #5
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Re: cheap fast way to make a mooring

Concrete is not iron. It is much more buoyant than iron. Here's the Rube Goldberg we used to concoct for cheap moorings: get a couple of old engine blocks (usually plenty of these around boatyards), yoke them together with a good swivel, (the chain threaded through short pcs. of pipe where they go through the piston bores for abrasion) and dump 'em in about 15' apart. Back about 30 years ago, I did this in a nice muddy spot and it held a 45' wood boat for years, season after season. Once those blocks sink into the bottom, you'll never pull them out. Undoubtedly nowadays there is some reason in the world of NO why you can't do this, You might crush a clam or something. So you'll have to do it in the dark of night or on a really foggy day.
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Old 03-04-2011, 15:40   #6
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Re: cheap fast way to make a mooring

This is a sidetrack to the matter at hand, but speaking of moorings, I recently came across these habitat moorings, designed to provide little hidey-holes for lobsters and crabs and juvenile fish. What a fantastic idea. I'd like to see these used in every mooring field.

Habitat Mooring - A Mooring That Provides Marine Habitat


As for your busted up concrete -- at least hold it together by pouring some Redi-Mix in with it, in case the drum rusts out. While still wet, stick a big staple of 1" rebar in.

To deploy it, just roll it to the water's edge, tie on a bunch of floats at low tide, and paddle it out. Cut the lines and sink it. And you can often find cheap Danforth anchors second or third hand -- attach 3 equilaterally around your barrel (see "star mooring") and it'll never go anywhere.
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Old 03-04-2011, 15:42   #7
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Re: cheap fast way to make a mooring

Is the area well protected? The concrete will definitely help, but I wouldn't consider it t be a permanent solution.
Spencer
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Old 03-04-2011, 16:27   #8
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Re: cheap fast way to make a mooring

I nearly always anchor and rarely use a mooring, but concrete moorings are common in Europe, and I thought an extract from the local pilot guide would be useful.

"A 700KG concrete mooring block (0.8 x 0.8 x 0.5m) should hold a 10m boat in force 8 or a 15m boat in force 6"

It sounds resonable to me, but it means 700 pounds of broken concrete would only hold a 25 foot boat in light wind.
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Old 03-04-2011, 16:41   #9
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Re: cheap fast way to make a mooring

I'm thinking the steel drum holding the concrete won't be holding it very long.
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Old 03-04-2011, 16:48   #10
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Re: cheap fast way to make a mooring

Another one I've heard of is, a tractor tyre filled with concrete and a rebar staple in the middle.
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Old 03-04-2011, 16:51   #11
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Re: cheap fast way to make a mooring

where are you planing on doing this ? I mean, what state and city.
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Old 03-04-2011, 17:37   #12
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Re: cheap fast way to make a mooring

Hi Ryan,
I've had good luck with two cheap danforth knock-offs connected by a heavy chain. Put a swivel in between and a lighter chain to your mooring bouy. The hardest part is getting them both set. Set the first, then loop a long line around the crown of the second and pull it backward against the first anchor. I've had a 6k pound boat on two 22 pound West Marine anchors with no problems. It's also easy to retrieve if you've got to clear our.
Good luck,
John
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Old 03-04-2011, 18:42   #13
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Re: cheap fast way to make a mooring

two anchors, chain, and swivel, like others have said, is all you need, easiest and close to the cheapest way considering the time youll save not building some hunk of concrete

my boat (6tons) was held for 1.5 years on two anchors (40 lb danforth, and 45lb cqr knock off) and 1/4" chain with a swivel... saying....
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Old 03-04-2011, 18:47   #14
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Re: cheap fast way to make a mooring

Yep, get two big Danforths from Craigs List or yard sales and a hunk of chain between them. I' dconnect the chain in the middle to a big swivel and then from there up to the boat go with a hunk of thick nylon line. Probably hurricane proof for that sized boat.
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Old 03-04-2011, 18:48   #15
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Re: cheap fast way to make a mooring

Cheap and mooring do not go well together. According to ABYC, your mooring should have a holding power of ~2100 lbs. Dead-weight anchors are lucky to have a holding power equal to their water weight with decent scope. This would mean that your expected holding power is under 400 lbs or about 1/5 of what it should be. I wouldn't want you moored upwind of me with only 700 lbs of concrete.

You also need to look into local regulations. Usually there are regs that set the minimum requirements for an area.
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