DOCKS AND HARBOR ENGINEERING QUIZ

At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be

8.169 m

9.144 m

6.8 m

2.073 m

TRUE ANSWER : ?
YOUR ANSWER : ?

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

moles

sea walls

groynes

revetments

TRUE ANSWER : ?
YOUR ANSWER : ?

If H is the height of the wave expected, then the height of the breakwater is generally taken as

1.2 H to 1.25 H above the mean sea level

1.2 H to 1.25 H above the high water level

1.2 H to 1.25 H above the datum

1.2 H to 1.25 H above the low water level

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements.(i) Fender is the cushion provided on the face of the jetty for ships to come in contact,(ii) Slip is the space of water area between two adjacent piers where ships are berthed,(iii) Pier head is a structure constructed near the tip of a break water near the harbour entrance. Of the statements

(i), (ii) and (iii) are correct

(i) and (ii) are correct

(i) and (iii) are correct

(ii) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Large size stones are required in stone revetment in shore protection.Reason R : Resistance of stone to wave force is proportional to its volume and wave force is proportional to the exposed area of the stone.Select your answer based on the coding system given below.

A is true but R is false.

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

A is false but R is true.

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

TRUE ANSWER : ?
YOUR ANSWER : ?

The difference in height between highest high water and lowest low water is called

Mean range

Maximum range

Mean rise

Maximum rise

TRUE ANSWER : ?
YOUR ANSWER : ?

In basins subjected to strong winds and tide, the length of the berthing area should not be less than

Twice the length of design vessel

The length of design vessel

The length of design vessel + 10% clearance between adjacent vessels

The length of design vessel + 20% clearance between adjacent vessels

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Depth and width required at the entrance to a harbour are more than those required in the channel.Reason R : The entrance to a harbour is usually more exposed to waves as compared to the harbour itself.Select your answer based on the coding system given below:

A is false but R is true.

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

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

A is true but R is false.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are repair docks ?

dry docks, wet docks, floating docks, lift docks

wet docks, lift docks, marine railways, dry docks

marine railways, dry docks, floating docks, wet docks

wet docks, floating docks, lift docks, marine railways

TRUE ANSWER : ?
YOUR ANSWER : ?

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

(ii) and (iii) are correct

(i) and (iii) are correct

(i) and (ii) are correct

Only (iii) is correct

TRUE ANSWER : ?
YOUR ANSWER : ?