In the nautical sense, the term "line" is applied to anything less than a
600' coil of rope.
A "D" ring provides an uneven pull & I have never seen one used on boats.
They are typically used to fasten line (or rope) to cargo tie down. Pad eyes?
Yes, but not "D" Rings.
A "thimble" is a teardrop shaped piece of metal which allows the line to be
formed around it and bent back upon itself ... thus producing an eye.
A round object resembling a thimble is a "grommet" and although often used
in place of a thimble, sees more use on actual sails than on rigging.
If you use a thimble and simply apply a "whipping" to the bitter end which
has been folded back on the standing portion of the line, you are asking for
BIG trouble IMO. A "whipping" is designed primarily for three stranded line to
keep the end from unraveling. It can be used with natural as well as
synthetic fibers. An alternative is called a "backsplice" which will also
prevent
unraveling.
What you are proposing to do ... whipping the standing portion of the line
to the bitter end formed over a thimble ... is called a "seizing" ... and the
most popular style is called a "throat seizing." THIS SEIZING HAS NOWHERE NEAR
THE STRENGTH of a conventional eye splice and I recommend NOT attempting to
do the securing of the line as you propose.
Whipping thread typically is waxed sail twine ... while when seizing
something, the object commonly used is "Marline" ... which is a treated, three
strand (spliceable) heavy cordage. It is common to coat the sail twine with an
additional run (coating) through some Beeswax for extra protection.
IMO, trust your life and the safety of other persons & property first to an
eye splice ... and never a seizing.
GL & 73
Les, NN6K
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