Cable-laid line usually consists of three right-hand
hawser-laid lines twisted together in a left-hand
This type is especially useful in heavy
construction work, because if it tends to untwist, it will
tighten any regular right-hand screw connection to
which it may be attached; hence, its use provides an
added safety feature.
SIZE DESIGNATION OF LINE
The size of a line larger than 1 3/4 inches (44.5
mm) in circumference is generally designated by its
circumference in inches. A 6-inch (15-cm) manila
line, for instance, would be constructed of manila
fibers and measure 6 inches (15 cm) in circumference.
Line is available up to 16 inches (40 cm) in
circumference, but 12 inches (30 cm) is normally the
largest line carried in stock. Anything larger is used
only on special jobs (fig. 4-3).
Line 1 3/4 inches (44.5 mm) or less in
circumference is called SMALL STUFF, and size is
usually designated b y the number of threads (or yarns)
that make up each strand. You may find 6- to
24-thread small stuff, but the most common sizes are
9- to 21-thread (fig. 4-3). You may hear some small
stuff designated by name without reference to size.
One such type is MARLINE-a tarred, two-strand,
left-laid hemp. Marline is the small stuff you used the
most for seizing. When you need something stronger
than marline, use a tarred, three-strand, left-laid hemp,
Figure 4-3.Size designation of line.
If you ever order line, you may find that you have
to order it by diameter. The catalog may also use the
term rope (rather than line).
ROPE YARNS for temporary seizings,
whippings, and lashings are pulled from large strands
of old line that has outlived its usefulness. Pull your
yarn from the middle, away from the ends, or it will
HANDLING AND CARE OF
If you expect the fiber line you work with to give
safe and dependable service, make sure it is handled
and cared for properly. Procedures for the handling
and care of fiber line are as follows:
CLEANLINESS is part of the care of fiber line.
NEVER drag a line over the ground nor over rough or
dirty surfaces. The line can easily pick up sand and grit
that can work into the strands and wear the fibers. If a
line does get dirty, use water only to clean it. Do NOT
use soap because it takes oil out of the line.
AVOID pulling a line over sharp edges because
the strands may break. When you have a sharp edge,
place chafing gear, such as a board, folded cardboard or
canvas, or part of a rubber tire, between the line and the
sharp edge to prevent damaging the line.
NEVER cut a line unless you have to. When
possible, always use knots that can be untied easily.
Fiber line contracts, or shrinks, if it gets wet. If
there is not enough slack in a wet line to permit
shrinkage, the line is likely to overstrain and weaken.
If a taut line is exposed to rain or dampness, make sure
that the line, while still dry, is slackened to allow for
When nylon line is properly handled and
maintained, it should last more than five times longer
than manila line subjected to the same use. Nylon line
is also lighter, more flexible, less bulky, and easier to
handle and store than manila line. When nylon line is
wet or frozen, it loses little strength. Additional y,
nylon line is resistant to mildew, rotting, and attack by
If a nylon line becomes slippery because of grease,
it should be cleaned with light oils, such as kerosene
or diesel oil.