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TWL: Re: Rope


Subject: TWL: Re: Rope
From: Ken McQuage (

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    need some advice on type of rope
    > everyone has on board. Specifically, size of rope, total length for
    anchor
    > lines, tie ups, towing, etc, nylon vs. poly, 3 strand nylon vs. braided,
    > what diameter, etc. Thanks in advance.

     Doc Elk,
           Obviously everyone has there specific preferences for rope / line .

           Nylon has stretch and is used for anchor rode and dock lines as the
    stretch will absorb shock of
    waves caused either by wind or wake - sometimes
    additional chafe protection is needed where the line goes through the
    chock - especially under conditions of stress i.e. lots of rocking at
    either anchor due to wind or in a slip mostly due to wake - but sometimes
    due to high wind situations -- even a piece of garden or the plastic hose
    will protect a line passing through a chock ....0r over the usually ragged
    edge of a dock board ...

    Three Strand twisted line has most of the fibers on the interior of the line
    so that the wear due to chafe is minimized - or at least considered as more
    progressive and visible -- as opposed to braided line which is good for
    running smoothly through blocks and such - but has the fibers of the outer
    layer of line fully exposed to chafe through a chock or the usually raw
    edge corner of the end of a dock board or the like ..

             Line chafe at your dock edge can be minimized by installing
    something as simple as a piece of PVC corner molding ( home depot ) or the
    like . Where one expects to dock at concrete piers ( or locks ) sometimes
    a length of chain is used - spliced to the end of line to take the higher
    chafe at the edge of the concrete ..

          Docklines and Anchor lines accumulate both salt and dirt - which will
    enter the interior of the line and cut the fibers -- squirting them off
    fairly regularly with the hose helps to minimize the problem -- washing them
    thoroughly once a year , at least also helps prolong their useful life ..

        Rain - seawater - washing etc- will leech out the lubricants used by
    the mfg. in the production of the line and they will become stiffer with
    age -- soaking them in fabric softener will somewhat replace the lubricants
    also greatly extend their useful life ...

         On our 36 ft Manatee - about the same size as your boat -- I carry
    about 12 ft of 3/8 in chain on each of my bow anchors - a Delta and a Super
    Max ( in addition to three other anchors stored below - 2 Danforths and a
    Northhill - with an extra - appropriate 5/8 in anchor line and chain ) and
    use at least 5/8 inch twisted Nylon line on the Delta and 3/4 twisted on
    the Super Max -- it gives less worry --over time - about the residual line
    strength - and is easier to handle when hauling the anchor - the Delta
    carries 250 ft-- the Super Max - 300 ft - and there have been a few times
    I'm glad I had it .

        For docklines I usually use 1/2 twisted Nylon .

        Make sure that you do not get talked into putting loops in the end of
    ALL your dock lines - or you will have no way to adjust them when
    conditions of very high or very low water occur - due to storms or storm
    tides or simply the wind blowing the water out of the creek you may be
    docked it -

         Polyester ( Dacron ) line does not stretch and is useful for sailboat
    halyards and flag halyards - or other places where line stretch would be a
    problem.

         Polypropylene line floats - and is also cheap - that makes it useful
    for dinghy painters and the like - but it rapidly deteriorates in the sun -
    becomes brittle and the outward fibers break to become sharp needles which
    are at best unpleasant - at worst painful - to take out of your hand -- it
    is useful if kept fresh - replaced regularly -- it does not stretch however
    .

         Recently there has been introduced a floating either nylon or
    polyester line which I have not tried .

        For a tow line I use the extra anchor line 200 ft of 5/8 in Nylon ....

       Hope this helps a little
       All the Best
        Ken
        m/v Mrs. Hudson





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