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Old 11 April 2012, 17:17   #11
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cheers for that kerny.
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Old 11 April 2012, 17:35   #12
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Quote:
Originally Posted by kerny View Post
I would say a Bruce 5kg for your rib Shaun.
and a few more meters of chain.
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Old 11 April 2012, 18:38   #13
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This anchor and chain should do the trick to hold most any RIB. Might need a big ship and crane to move it for you...(Otherwise a 5kg Bruce anchor and longer chain should work well)

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Old 12 April 2012, 02:20   #14
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Just looking through the original Bruce anchor data sheets hat came with mine when I bought it in 1979
calculated as normal in 60 knot wind conditions some shelter with a displacement boat and on a soft soft sea bed
5 mtr =2kg
5 to 7 mtr=5kg
7 to 11 mtr=10kg

Being a high hold it will still bury itself with a rode or line angle of up to 30% unlike most other types that need 10/15%.

Also being high holding type unlike other anchors that need lots of chain to work it only needs Approx 2 metres of chain thats just to stop
rocks chaffing through the rope.

I use a 2.5 kg Bruce on my 3.5 sib with no problems ,
I have even had 4 other much larger hard fishing boats all tied up to me at the same time with no problem except then leaving me to recover a very deeply buried anchor .
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Old 12 April 2012, 03:43   #15
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I have a1kg Bruce I use on my SR4 & it has held my rib + 2boston walers for the best part of a day, should have seen there faces at the end of the day when I pulled it up
I do have 5m of chain on it too

I have a 5kg + chain on my Ribeye & when set in sand i tried pulling it in to the beach & could not it held solid!
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Old 12 April 2012, 05:14   #16
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My 4.7m rib hold very well with a 2Kg bruce - technically I think you are supposed to have the same length chain as boat length - Although I think I've only got about 3 metres.

But I guess all depends on the conditions you will normally want to anchor.......
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Old 12 April 2012, 10:44   #17
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The type of rope that's used on any type of anchor can make a big difference to how good it will hold too,
Nylon that has high stretch is one of the best one s as it will take out any shock or snatch loading that may tend to yank on the anchor that wave actions can generate especially in a SIB where the boats bow will be buffeted up and down more unlike a normal boat or RIB where the boats bow will tend to be cutting through them more. Well up to a point.
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Old 29 April 2012, 14:05   #18
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Just read all the posts on this thread--thanks guys. Now I know exactly what anchor to buy as well as chain length and line type.
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