Lesson 5 Seamanship

Question 1

1. Does seamanship include housekeeping?

Answer 1

Yes

Question 2

2. List two types of natural fibre used for ropes and the source.

Answer 2

1) Manila - made from a type of banana tree found in the Philippines
2) Sisal - from a plant cultivated in Africa

Question 3

3. List three types of common synthetic fibre ropes.

Answer 3

1) Nylon ( polyamide)
2) Polyester
3) Silver rope ( polyethylene)

Question 4

4. What is the most common use for steel wire rope?

Answer 4

Lifting operations

Question 5

5. List 3 standard grades of chain.

Answer 5

1) 30(L)
2) 40 (P)
3) 80(T)

Question 6

6. Which grade of chain is stronger, grade P or grade (T) ?

Answer 6

Grade T

Question 7

7. Which grade of chain is commonly used for anchoring?

Answer 7

Grade P

Question 8

8. For what is grade T chain commonly used?

Answer 8

Lifting purposes

Question 9

9. How should chain be joined?

Answer 9

By using special lugged shackles.

Question 10

10. What is a WLL?

Answer 10

Working Load Limit
That is, the maximum load which should be applied to an object under any condition.

Question 11

11. List five checks that should be carried out on lifting equipment.

Answer 11

1) check the WLL is appropriate for the job
2) check the eyes or chain links have not elongated
3) check shackles are ‘moused’ ( pins secured) and not worn
4) check that sheaves of blocks are rotating and not worn
5) check that steel wire rope is not rusted or kinked and has no broken strands

Question 12

12. List two pieces of maintenance that should be carried out on lifting equipment.

Answer 12

1) keep moving parts well lubricated.
2) paint for protection where appropriate