Sailing: Keelboat Course: Knots And Lines

Front 1

What are the three materials lines are commonly made of?

Back 1

Nylon, Dacron & Kevlar

Front 2

Of Nylon and Dacron, which is stronger and stretches more?

Back 2

Nylon

Front 3

Are Dacron and Kevlar high stretch or low stretch? Why is this advantageous for halyards?

Back 3

Low stretch. The line will not have to be adjusted with increasing wind loads.

Front 4

What is "breaking strain"? What is "working strain?"

Back 4

Breaking strain is the force needed to break a line. Working strain is the greatest amount of force that can be placed on a line without damaging the line.

Front 5

What is Nylon's working strain?

Back 5

About 10% of its breaking strain.

Front 6

What is Dacron's working strain?

Back 6

About 20% of its breaking strain.

Front 7

Which is stronger, braided weave or stranded weave, and by how much?

Back 7

Braided weaves are approximately twice as strong as stranded weaves.

Front 8

What knot is used to tie two lines together?

Back 8

Square knot.

Front 9

This knot is used to tie two lines of equal or different sizes together

Back 9

Sheet Bend

Front 10

These knots are used to tie a line to a post.

Back 10

Bowline or Clove Hitch or Round Turn & Two Half Hitches

Front 11

This knot is used to tie a line around one's waist.

Back 11

Bowline

Front 12

This knot is used as a stopper knot.

Back 12

Figure Eight

Front 13

With what line would you secure a line to a Deck Cleat?

Back 13

Cleat Hitch

Front 14

What is Stranded Nylon's stretch at a load of 50% breaking strength?

Back 14

30%

Front 15

What is Braided Nylon's stretch at a load of 50% breaking strength?

Back 15

15%

Front 16

What is Stranded Dacron's stretch at a load of 50% breaking strength?

Back 16

10%

Front 17

What is Braided Dacron's stretch at a load of 50% breaking strength?

Back 17

10%

Front 18

What is Kevlar's & Spectra's stretch at a load of 50% breaking strength?

Back 18

5%