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Forum: Anchoring & Mooring

15-07-2013, 08:51

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Well, as ever with anchors the problem is - how...

Well, as ever with anchors the problem is - how do you know?

As far as helping with keeping the chain on the seabed there are some spreadsheets in here.....

Forum: Anchoring & Mooring

01-07-2013, 11:22

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Re: Anchors and chain

The worst loads I've come across have been when the wind has been gusting up to 60Kn coming from all directions, so the boat gained a lot of speed before the snubber exploded water as it stopped the...

Forum: Anchoring & Mooring

01-07-2013, 11:01

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Re: Anchors and chain

Not sure at all about this one, but might be getting there..

https://www.desmos.com/calculator/gcffowg4zv

Y scale is 100's Kg ( to get the scale readable)
x is amount of stretch in the rode to...

Forum: Anchoring & Mooring

01-07-2013, 09:20

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Re: Anchors and chain

Think I didn't take a good route with the time based F=MA, possibly an easier way to visualize might be to think of the energy being transferred as equal to the area under a graph of force against...

Forum: Anchoring & Mooring

01-07-2013, 06:51

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Re: Anchors and chain

Got it. Basically F=MA. Bit picky but the " approximately 1/5 what it would be without the snub line." confused me.
This is all assuming the stress/strain of the line is linear, which it seems to...

Forum: Anchoring & Mooring

01-07-2013, 03:41

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Re: Anchors and chain

Where did you get that figure from? Would be interesting to see how it was calculated.

Ta

Forum: Anchoring & Mooring

01-07-2013, 03:37

Replies: 71

Anchors and Chain

Views: 8,092

Posted By conachair

Re: Anchors and chain

Agree with the conclusion, catinary doesn't help much when you really need it. But I can't seem to recreate the very first graph. :banghead:

After a quick glance at the page there didn't seem to...

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