Natural Fiber Ropes Final Flashcards
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Questions and Answers

When using or caring for natural-fiber rope, which of the following is NOT recommended?

  • Try to lubricate the line (correct)
  • Reverse turns on winches periodically to keep out kinks
  • Use chafing gear
  • Dry the line before stowing it

    • Which method is used to detect rot in manila lines?

  • Opening the strands and examining the inner fibers (correct)
  • Measuring the reduction in circumference of the line
  • Feeling the surface of the line for broken fibers
  • Observing for the appearance of mildew on the outer surface

    • Which of the following is the strongest of the natural fibers?

  • Manila (correct)
  • Hemp
  • Sisal
  • Cotton

    • The larger sizes of manila line are measured by their __________.

    <p>circumference</p> Signup and view all the answers

    Which type of line would have the LEAST resistance to mildew and rot?

    <p>Manila</p> Signup and view all the answers

    When taking a length of new manila rope from the coil, you should __________.

    <p>Lay the coil on end with the inside end down, then pull the inside end up through the middle of the coil</p> Signup and view all the answers

    What is the result when natural fiber rope gets wet?

    <p>The line will shrink in length</p> Signup and view all the answers

    Which of the following may result from improperly coiling manila line?

    <p>Kink in the line</p> Signup and view all the answers

    Nylon line is NOT suitable for __________.

    <p>Lashings</p> Signup and view all the answers

    Under identical load conditions, nylon, when compared with natural fiber line, will stretch __________.

    <p>More and have greater strength</p> Signup and view all the answers

    Which type of line is best able to withstand sudden shock loads?

    <p>Nylon</p> Signup and view all the answers

    If given equal care, nylon line should last how many times longer than manila line?

    <p>Five</p> Signup and view all the answers

    Nylon line can be dangerous because it __________.

    <p>Stretches</p> Signup and view all the answers

    An advantage of nylon rope over manila rope is that nylon rope __________.

    <p>Can hold a load even when a considerable amount of the yarns have been abraded</p> Signup and view all the answers

    A new coil of nylon line should be opened by __________.

    <p>Unreeling from a spool</p> Signup and view all the answers

    The 'lay' of a line refers to __________.

    <p>The direction of twist in the strands</p> Signup and view all the answers

    Stuffer-braid rope has __________.

    <p>A yarn core</p> Signup and view all the answers

    Right-laid line should be coiled __________.

    <p>Clockwise</p> Signup and view all the answers

    Roundline is a __________.

    <p>Three-stranded, right-handed line</p> Signup and view all the answers

    White Line is made from __________.

    <p>Cotton</p> Signup and view all the answers

    Line is called 'small stuff' if its circumference is less than __________.

    <p>1 3/4&quot;</p> Signup and view all the answers

    In the manufacture of line, plant fibers are twisted together to form __________.

    <p>Yarns</p> Signup and view all the answers

    In what direction should you coil a left hand laid rope?

    <p>A counter-clockwise direction only</p> Signup and view all the answers

    Which factor is most likely to impair the strength and durability of synthetic line?

    <p>Sunlight</p> Signup and view all the answers

    Which line would be least likely to kink?

    <p>Braided</p> Signup and view all the answers

    Which type of line floats?

    <p>Polypropylene</p> Signup and view all the answers

    What type of line melts easiest?

    <p>Polypropylene</p> Signup and view all the answers

    In order to correctly open a new coil of manila line, you should __________.

    <p>Pull the tagged end through the eye of the coil</p> Signup and view all the answers

    How should manila lines in which the strands are right-hand laid be coiled?

    <p>They should be coiled in a clockwise direction</p> Signup and view all the answers

    As you hold a piece of manila line vertically in front of you, the strands run from the lower left to the upper right. Which type of line is this?

    <p>Right-hand laid</p> Signup and view all the answers

    Which type of line will stretch the most when under strain?

    <p>Nylon</p> Signup and view all the answers

    Marline is __________.

    <p>Two-stranded hemp cord</p> Signup and view all the answers

    During the manufacture of line, yarns are twisted together in the __________.

    <p>Opposite direction from which the fibers are twisted together to form strands</p> Signup and view all the answers

    As you hold a piece of manila line vertically in front of you, the strands run from the lower right to the upper left. Which type of line is this?

    <p>Left-hand laid</p> Signup and view all the answers

    Compared to manila line, size for size, nylon line __________.

    <p>Has more strength than manila line</p> Signup and view all the answers

    What is the critical point in nylon line elongation?

    <p>40%</p> Signup and view all the answers

    Which line is two-stranded, left-handed small stuff?

    <p>Marline</p> Signup and view all the answers

    In what direction should you coil a right hand laid rope?

    <p>A clockwise direction</p> Signup and view all the answers

    A natural fiber rope can be ruined by dampness because it may __________.

    <p>Rot</p> Signup and view all the answers

    Which term describes a rope in which three right-handed strands are laid up left-handed?

    <p>Hawser-laid</p> Signup and view all the answers

    Which term describes a part of a natural fiber line?

    <p>Fibers</p> Signup and view all the answers

    How should natural fiber rope be stowed in order to help protect it from rotting?

    <p>Dried, and stowed in a place with adequate ventilation</p> Signup and view all the answers

    Study Notes

    Natural Fiber Ropes Overview

    • USCG 5172: Do not lubricate natural-fiber rope; it can damage the fibers.
    • USCG 5173: To detect rot in manila lines, open the strands and examine inner fibers.
    • USCG 5176: Manila is the strongest natural fiber among types including hemp, sisal, and cotton.
    • USCG 5178: The larger sizes of manila line are measured by circumference.

    Mildew, Care, and Handling

    • USCG 5179: Manila shows the least resistance to mildew and rot compared to nylon, Dacron, and polypropylene.
    • USCG 5180: When uncoiling new manila rope, lay the coil on end with the inside end down.
    • USCG 5182: Wet natural fiber rope shrinks in length, potentially compromising strength.
    • USCG 5184: Improper coiling of manila line can cause kinks.

    Line Properties

    • USCG 5189: Nylon line is unsuitable for lashings.
    • USCG 5190: Under load, nylon line stretches more than natural fiber line, providing greater strength.
    • USCG 5191: Nylon is best for handling sudden shock loads.
    • USCG 5192: With equal care, nylon line lasts five times longer than manila line.

    Advantages and Danger of Lines

    • USCG 5194: Nylon stretches, which can pose dangers due to sudden give.
    • USCG 5195: Nylon rope can maintain load capacity even when damaged or abraded.
    • USCG 5196: To open a new coil of nylon line, unreel it from a spool.

    Twisting, Coiling, and Construction

    • USCG 5204: The "lay" of a line refers to the direction of twist in its strands.
    • USCG 5208: Stuffer-braid rope includes a yarn core.
    • USCG 5209: Right-laid line should be coiled clockwise.
    • USCG 5213: Roundline consists of a three-stranded, right-handed line.

    Types of Lines

    • USCG 5216: "White Line" is made from cotton.
    • USCG 5217: "Small stuff" designates line with a circumference less than 1 3/4".
    • USCG 5221: Yarn construction involves twisting fibers together to create strands.

    Coiling Directions

    • USCG 5223: A hawser-laid rope has three right-handed strands laid up left-handed.
    • USCG 5222: Coil right-hand laid rope clockwise and left-hand laid rope counterclockwise.
    • USCG 5224: Sunlight is the biggest threat to the strength and durability of synthetic line.

    Performance Under Strain

    • USCG 5186: Left-hand laid lines run from lower right to upper left when held vertically.
    • USCG 5193: Nylon is significantly stronger than manila line, size for size.
    • USCG 5197: Nylon becomes critically elongated at a stretch of 40%.

    Special Terms and Construction

    • USCG 5214: Marline is a two-stranded hemp cord.
    • USCG 5228: Polypropylene line is characterized by its ability to float.
    • USCG 5229: Polypropylene also melts more easily compared to other materials.

    Storage and Maintenance

    • USCG 5174: Natural fiber ropes are prone to rotting when damp.
    • USCG 5175: Store natural fiber rope dried and in a well-ventilated area to prevent rotting.

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    Description

    Test your knowledge on the care and maintenance of natural fiber ropes with these flashcards. This quiz includes important practices to avoid and how to detect rot in manila lines. Perfect for anyone preparing for assessments on marine safety and equipment handling.

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