Docks and Harbor Engineering

This is an MCQ-based quiz on Docks and Harbor Engineering.

This includes groynes, sea walls, revetments, and moles.

Start Quiz

A ship strikes the berth generally at an angle

90° with the face of the dock 45° with the face of the dock 30° with the face of the dock 10° with the face of the dock

Select the incorrect statement among the following.

The progress of work in low level method of mound construction is very slow Barge method of mound construction is economical In low level method of mound construction, the area of working is limited In staging method of mound construction, the work is not interrupted even during stormy weather

Assertion A : Basin walls have to be of much grater height than dock walls.Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations.Select your answer based on the coding system given below:

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

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:

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. A is false but R is true.

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

2.5 m 4 m 5 m 7 m

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

2.073 m 8.169 m 9.144 m 6.8 m

As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by (where F is the fetch in km.)

0.34 VF 0.5 VF 1.5 VF 3.4 VF

The shape of docks and basins is generally kept in ...........

Rectangular ways Inclined quays Diamond shape quays All of the Above

The width of the entrances of the harbours is restricted to

180 m 150 m 125 m 100 m

The fixed mooring does not require ...........

Capstan Anchors Bollard Mooring post

A harbour is a place where .............. get shelter and protection against destructive forces due to sea waves

Planes Trains Ships None of the above

What is a roadstead?

It is the end of the road at the harbour. It may be protected by break water walls. It is a protected area of water where boats can move safely. None of the above

Choose the incorrect statement from the following option?

A falling hydraulic gradient occurs in the direction of the wave The wave while receding carries finer particles out to deep water The on-shore wind helps to produce wave action as well as rise of M.S.L None of the above

............ is used for tying a ship with a dock.

Bow line Stern line Spring line All of the above

The heaviest line is used to democrat the ...........

The low water line The high water line The limit of swamps None of the above

What is the important component of a sea port?

The docks The harbours Terminal buildings All of the above

Which of the following option is not come under the category of harbor classification?

Artificial harbor Natural harbor Semi artificial harbor Semi natural harbor

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.