Hi, All,
Any recommendations for mooring line, the one that runs from the bow cleat to the mooring float? Braid? - single?, double? core? - diameter? - length?
mooring line
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mooring line
by navahoIII » Fri Apr 16, 2010 2:00 pm
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3/8 to 1/2" double braid would be my choice.
by Roger » Fri Apr 16, 2010 8:19 pm
it may be a bit of overkill, but at least you know its going to hold in a blow and easy to grab on to when mooring.
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by MrPlywood » Fri Apr 16, 2010 10:27 pm
Nylon line is recommended for mooring lines and dock lines because of its elasticity (so don't use them for tow lines).
From one maker: When making a choice of line for your boat, keep in mind that 12-strand (Mega braid or Brait) line is not as strong as double braid line and colored line is not as strong as white line. Different braids have different attributes and tensile strengths can vary by as much as 15%. Make your choice accordingly.
http://www.ropeinc.com/docklines.html
From one maker: When making a choice of line for your boat, keep in mind that 12-strand (Mega braid or Brait) line is not as strong as double braid line and colored line is not as strong as white line. Different braids have different attributes and tensile strengths can vary by as much as 15%. Make your choice accordingly.
http://www.ropeinc.com/docklines.html
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by GreenLake » Sat Apr 17, 2010 1:54 am
Extrapolating from standard charts designed for keel-boats isn't going to be very helpful for a number of reasons.
The DS weighs about 650 pounds, which is rather light. Therefore, almost all docking/mooring lines will be over-dimensioned because modern fibers are so strong. In other words, you could get the required tensile strength with lines much thinner than are practical from other considerations. Over-dimensioned is good, because that gives a reserve in case of chafe.
If you are moored to a post or dock, then I might worry about shock loads, because a post or dock represents a fixed point. A mooring buoy on the other hand probably has enough "give" to it, that I suspect it doesn't matter as much what construction your rope has, or what materials it's made of.
If you had rely on the springiness of your lines, then they would need to be weak enough so that they will stretch a significant amount under the actual loads for your boat. Why? Because the longer the distance is over which you stretch out the deceleration of your boat, the smaller the load will be. Here, over-dimensioned lines would work against you, or require that you add one of those rubber springs.
So, if there's give in your mooring, either from the buoy, or from a dedicated device like a rubber spring in your line, you are free to select your line based on durability, that is chafe and UV resistance.
Anyway, those are my thoughts on the matter.
The DS weighs about 650 pounds, which is rather light. Therefore, almost all docking/mooring lines will be over-dimensioned because modern fibers are so strong. In other words, you could get the required tensile strength with lines much thinner than are practical from other considerations. Over-dimensioned is good, because that gives a reserve in case of chafe.
If you are moored to a post or dock, then I might worry about shock loads, because a post or dock represents a fixed point. A mooring buoy on the other hand probably has enough "give" to it, that I suspect it doesn't matter as much what construction your rope has, or what materials it's made of.
If you had rely on the springiness of your lines, then they would need to be weak enough so that they will stretch a significant amount under the actual loads for your boat. Why? Because the longer the distance is over which you stretch out the deceleration of your boat, the smaller the load will be. Here, over-dimensioned lines would work against you, or require that you add one of those rubber springs.
So, if there's give in your mooring, either from the buoy, or from a dedicated device like a rubber spring in your line, you are free to select your line based on durability, that is chafe and UV resistance.
Anyway, those are my thoughts on the matter.
~ green ~ lake ~ ~
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