DOCKS AND HARBOR ENGINEERING QUIZ

If the maximum spring rise is 2 m and height of the waves expected is 4 m , then the breakwater height above the datum will be

7 m

5 m

4 m

2.5 m

TRUE ANSWER : ?
YOUR ANSWER : ?

A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.

Floating dock

Dry dock

Wet dock

Refuge dock

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section.Reason R : No wave can have a height greater than the depth of water through which it passes.Select your answer based on the coding system given below:

A is true but R is false.

Both A and R are true and R is correct explanation of A.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?

Sea walls, revetments and groynes

Bulk heads, revetments and groynes

Sea walls, bulk heads and groynes

Sea walls, bulk heads and revetments

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Marine structures are made specially bulky and strong.Reason R : Sea insects result in undermining of the hardest and the soundest building material.Select your answer based on the coding system given below:

Both A and R are true but R is not the correct explanation of

Both A and R are true and R is the correct explanation of

A is false but R is true.

A is true but R is false.

TRUE ANSWER : ?
YOUR ANSWER : ?

By increasing the rise of lock-gates, (i) The length of the lock gate will increase (ii) Transverse stress due to water pressure on the gate will increase (iii) Compressive force on the gate will increase

(i) and (iii) are correct

(i) and (ii) are correct

Only (iii) is correct

Only (ii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following structures protects the shore by trapping of littoral drift?

groynes

sea walls

revetments

moles

TRUE ANSWER : ?
YOUR ANSWER : ?

Dead weight tonnage of a ship<br/>(i) varies with latitude and season<br/>(ii) is more than displacement tonnage<br/>(iii) is the difference between displacement load and displacement light of these statements

(ii) and (iii) are correct

(i) and (ii) are correct

(i) and (iii) are correct

Only (iii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

In multiple point mooring system, vessel is secured to minimum of

Two points

Eight points

Four points

Six points

TRUE ANSWER : ?
YOUR ANSWER : ?

In a two lane channel, bottom width of channel is given by

(2 × Manoeuvring lane) + (2 × Bank clearance lane + ship clearance lane)

(2 × Manoeuvring lane) + (2 × Bank clearance lane)

Manoeuvring lane + (2 × Bank clearance lane)

Manoeuvring lane + (2 × Bank clearance lane) + ship clearance lane

TRUE ANSWER : ?
YOUR ANSWER : ?