Podcast
Questions and Answers
When using or caring for natural-fiber rope, which of the following is NOT recommended?
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?
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?
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 __________.
The larger sizes of manila line are measured by their __________.
Which type of line would have the LEAST resistance to mildew and rot?
Which type of line would have the LEAST resistance to mildew and rot?
When taking a length of new manila rope from the coil, you should __________.
When taking a length of new manila rope from the coil, you should __________.
What is the result when natural fiber rope gets wet?
What is the result when natural fiber rope gets wet?
Which of the following may result from improperly coiling manila line?
Which of the following may result from improperly coiling manila line?
Nylon line is NOT suitable for __________.
Nylon line is NOT suitable for __________.
Under identical load conditions, nylon, when compared with natural fiber line, will stretch __________.
Under identical load conditions, nylon, when compared with natural fiber line, will stretch __________.
Which type of line is best able to withstand sudden shock loads?
Which type of line is best able to withstand sudden shock loads?
If given equal care, nylon line should last how many times longer than manila line?
If given equal care, nylon line should last how many times longer than manila line?
Nylon line can be dangerous because it __________.
Nylon line can be dangerous because it __________.
An advantage of nylon rope over manila rope is that nylon rope __________.
An advantage of nylon rope over manila rope is that nylon rope __________.
A new coil of nylon line should be opened by __________.
A new coil of nylon line should be opened by __________.
The 'lay' of a line refers to __________.
The 'lay' of a line refers to __________.
Stuffer-braid rope has __________.
Stuffer-braid rope has __________.
Right-laid line should be coiled __________.
Right-laid line should be coiled __________.
Roundline is a __________.
Roundline is a __________.
White Line is made from __________.
White Line is made from __________.
Line is called 'small stuff' if its circumference is less than __________.
Line is called 'small stuff' if its circumference is less than __________.
In the manufacture of line, plant fibers are twisted together to form __________.
In the manufacture of line, plant fibers are twisted together to form __________.
In what direction should you coil a left hand laid rope?
In what direction should you coil a left hand laid rope?
Which factor is most likely to impair the strength and durability of synthetic line?
Which factor is most likely to impair the strength and durability of synthetic line?
Which line would be least likely to kink?
Which line would be least likely to kink?
Which type of line floats?
Which type of line floats?
What type of line melts easiest?
What type of line melts easiest?
In order to correctly open a new coil of manila line, you should __________.
In order to correctly open a new coil of manila line, you should __________.
How should manila lines in which the strands are right-hand laid be coiled?
How should manila lines in which the strands are right-hand laid be coiled?
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?
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?
Which type of line will stretch the most when under strain?
Which type of line will stretch the most when under strain?
Marline is __________.
Marline is __________.
During the manufacture of line, yarns are twisted together in the __________.
During the manufacture of line, yarns are twisted together in the __________.
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?
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?
Compared to manila line, size for size, nylon line __________.
Compared to manila line, size for size, nylon line __________.
What is the critical point in nylon line elongation?
What is the critical point in nylon line elongation?
Which line is two-stranded, left-handed small stuff?
Which line is two-stranded, left-handed small stuff?
In what direction should you coil a right hand laid rope?
In what direction should you coil a right hand laid rope?
A natural fiber rope can be ruined by dampness because it may __________.
A natural fiber rope can be ruined by dampness because it may __________.
Which term describes a rope in which three right-handed strands are laid up left-handed?
Which term describes a rope in which three right-handed strands are laid up left-handed?
Which term describes a part of a natural fiber line?
Which term describes a part of a natural fiber line?
How should natural fiber rope be stowed in order to help protect it from rotting?
How should natural fiber rope be stowed in order to help protect it from rotting?
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.
Studying That Suits You
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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.
