Knots And Lines Flashcards
What can a line be secured to?
An object
Itself
Another line
When tying knots, what are the terms used to describe different parts of the lines?
Standing part
Bight
Running end
Tail
What are the qualities of a good knot ?
Easy to tie
Easy to untie
Not damage the line
Carry out the function intended safely and without slipping.
What is a line ?
A length of rope cut to a specific length for a specific task
What length is a long line ?
31m
What length is a short line?
15.5m
What length is a pouch line ?
4 m
What is the purpose of
Half hitch
Round turn
Round turn and two half hitches
To secure a line to an object
What is the purpose of an
Overhand knot
Figure of eight knot
to prevent a line unreeving through a block
Used to indicate a burst length
What is the purpose of a fisherman’s knot ?
To join two lines of equal thickness
What is the purpose of a double sheet bend ?
To join two lines of unequal thickness
What is the purpose of a
Clove hitch
Rolling hitch
To secure around an object being pulled at right angles.
What is the purpose of Bowline
To secure a line when a non slipping noose is required
What is the purpose of a running bowline
To secure a line when a slipping noose is required.
How is a long line stored
Haphazardly in a yellow duffel bag.
How are ropes constructed ?
Made of synthetic (Nylon), vegetable or steel fibres.
Fibres twisted in strands, strands twisted into Yarns, Yarns twisted in rope.
Rope can be right or left hand lay.
Ends are called whippings.
Causes of line deterioration?
- Prolonged exposure to Sunlight
- Cuts and contusions
- Overloading
- Chemical attack
- Local abrasion
- Heat (fire or friction)
Standard tests for line ?
Tested
On acceptance
After operational use
Quarterly
Annually at workshops
- Check line along its length at 300mm intervals
- checks whippings in place
- Check bag doesn’t have and cuts larger than 25mm
Describe how to care for a line.
- Rinse with warm water and washing up liquid
- Flush with warm water
- Allow to dry naturally
Use of short line
Used when a long line would be too awkward e.g securing hard suction
