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Old 05-01-2010, 15:34   #16
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Originally Posted by Hampus View Post
Hey!

This is what we're dealing with:

1. Home waters (Scandinavia) with sand or mud bottoms, in some places broken shell and sometimes covered with weed.
2. Coasts of Germany and Holland, pretty much nothing but soft mud.
3. Caribbean next year. Sand I geuss?

Boat: 41ft 15 ton ketch. Construction of bowsprit makes it impossible to fit a Manson or Rocna without serious modification. Today she's equipped with a 16 kg CQR and 140 ft of chain. I will replace the chain with a brand new one of 250 ft and add another 2x160 ft of 16mm multiplate polyester line.

Question is, what anchors should we go with. I'm thinking
1: Keep the CQR as secondary and add a 30 kg Spade (but oh so expensive).
2: Loose the CQR and get a 25 kg Delta and a 14.4 kg Fortress.
3: Same as above but with a 20 kg Bruce instead of the Fortress.

Other suggestions, ideas or feedback is much apreciated!

/Hampus
Keep the CQR for back up. Get the Spade. Get a big Fortress too.

FWIW, I have two Spades and two Fortresses. That way, I have a backup for each anchor. It's a waste of weight until you need the backup, at which time the backup can then literally be a life saver.
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Old 08-01-2010, 03:19   #17
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What's the recommended break load of chain/rode in relation to displacement?

/Hampus
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Old 08-01-2010, 10:40   #18
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I'm with Bash on this. If you know you'd really be happier with a new generation anchor (rocna etc) then I'd change whatever is needed. On price, I'd rather eat beans for a month than spend even one night worrying about my anchor holding power. When people laugh at me about my over sized (and expensive) Manson I know I'll be snug in bed when they are dragging in thirty knots of wind.

P.
One more vote for this approach.
I have a bowsprite and am modifying it to accept a Rocna 25kg.
It will take some work, but needs only to be done once.
You really may want to give this more consideration?

Good Luck,
Extemp.
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Old 08-01-2010, 13:21   #19
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Thanks for your replies!

Money is an issue. We're going with a brand new chain, the old CQR and a brand new Spade as well as 300ft of rode.

A question though. What should the breaking load of the chain be for a 15 ton boat?

/Hampus
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Old 08-01-2010, 17:51   #20
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It should be 5 times higher than the working load ;-))))

Seriously, have not seen such data. many will claim it can be derived from the windage and the wave force exerted by the prevailing conditions.

On a 15k Kg boat the chain will often be 10 or 12mm. If anchor winch has the gypsy for it, go with 12, but if you ever handle chain by hand, go with 10 - 12 is a good deal of Kg heavier per each meter.

In my opinion a 10 mm g4 would be a very nice and safe optimum.

b.
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Old 08-01-2010, 18:06   #21
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Yeah, we have 10mm now and we'll get 10 mm again. The break load for 10 mm galvanized chain, at least the one they sell around here, is only 3500 kg, which seems low to me... But with a piece of polyester rode and a couple of bungees it shouldn't snap...

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Old 08-01-2010, 19:47   #22
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If you have 10 stick with it. In West Indies you can easily buy G4 which is stronger size for size. I believe the price of g4 (G40) in West Indies will be same (perhaps lower) as plain (g3) chain purchased anywhere in Europe.

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