Hemp.
This tall plant is cultivated in many parts of the world and provides
useful fibers for making rope and cloth.
Hemp was used extensively before the
introduction of Manila, but its principal use today is in fittings, such as
ratline, marline, and spun yarn. Since hemp absorbs much better than the hard
fibers, these fittings are invariably tarred to make them more water resistant.
Tarred hemp has about 80 percentage of the strength of un-tarred hemp. Of these
tarred fittings, marline is the standard item of issue.
Coir and Cotton.
Coir rope is made from the fiber of coconut husks. It is a very elastic,
rough rope about one-fourth the strength of hemp but light enough to float on
water. Cotton makes a very smooth, white rope that withstands much bending and
running. These two types of rope are not widely used in the military; however,
cotton is used in some cases for very small lines.
Jute.
The
glossy fiber of either of two East Indian plants of the linden family used
chiefly for sacking, burlap, and cheaper varieties of twine and rope.
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