50+ Docks and Harbour Engineering MCQ Test and Online Quiz

Docks and harbors are an important part of any city. They provide a place for boats to dock and people to get on and off of boats. They are also a place where goods can be loaded and unloaded from boats. In this write-up, we will discuss some common questions about docks and harbors. We will also provide you with a quiz to test your knowledge!

A dock is a man-made structure that is built out into a body of water. Docks are used to provide a place for people to get on and off of boats. They are also used to load and unload goods from boats.

A harbor is a naturally occurring body of water that is sheltered from the open sea. Harbors are often used as a place to dock boats and to load and unload goods from boats

The main difference between a dock and a harbor is that docks are man-made structures, while harbors are naturally occurring bodies of water. Docks are also usually built out into a body of water, while harbors are often sheltered from the open sea.

What is the purpose of a dock?

The purpose of a dock is to provide a place for people to get on and off of boats. Docks are also used to load and unload goods from boats

What is the purpose of a harbor?

The purpose of a harbor is to provide a naturally occurring body of water that is sheltered from the open sea. Harbors are often used as a place to dock boats and to load and unload goods from boats.

Final Verdict

Both docks and harbors play an important role in the transportation of goods and people.

Following are some of the multiple choice questions on the Docks and Harbour Engineering with answers that will help the students in developing their knowledge.

Docks and Harbour Engineering MCQ

1. Which of the following are repair docks ?

marine railways, dry docks, floating docks, wet docks
dry docks, wet docks, floating docks, lift docks
wet docks, floating docks, lift docks, marine railways
wet docks, lift docks, marine railways, dry docks

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

Dry dock
Wet dock
Floating dock
Refuge dock

3. Pick up the correct statement function following:

The coarse material which has a smaller angle of repose, causes a steeper beach slope
The coarse material which has a greater angle of repose, causes a steeper beach slope
The flattening out of the beach is caused due to the movement of small and uniform particles leeward.
both (b) and (c).

4. Which of the following is a fixed type mooring accessory ?

bollard
buoys
cables
anchors

5. Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?

When the dock is empty
When the dock is empty with the ship of maximum tonnage
When the dock is full of water
When the dock is dry and is under construction

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

Mean range
Maximum range
Maximum rise
Mean rise

7. The most popular method of construction of wall breakwaters is

Barge method
Staging method
Low level method
none of the above

8. Which of the following type of sea walls results in greatest protection of shore structures?

vertical sea wall
sea wall with batter
stepped sea wall
sea wall with concave face

9. 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

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

groynes
sea walls
revetments
moles

11. The significant wave height is defined is the average height of the

one – third highest waves
one – fourth highest waves
one – fifth highest waves
one – tenth highest waves

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

Sea walls, bulk heads and groynes
Sea walls, bulk heads and revetments
Sea walls, revetments and groynes
Bulk heads, revetments and groynes

13. In a wet dock system,

entrance locks are provided with massive gates
the locks of dock gate are operated by means of heavy bascule bridges and connected machinery
the cost of construction is quite heavy
all the above.

14. The width of the entrances of the harbours is restricted to

100 m
125 m
150 m
180 m

15. A roadstead :

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

16. For location of soundings a range and one angle from the shore involves the following operations. Which one is correct ?

A range line is established
The first and the last soundings and every tenth soundings are fixed by angular observations
The intermediate soundings are fixed by the time intervals
All the above.

17. If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then the horizontal distance from the ship to the light house in kilometres is

3.86 (h + h1)
3.86 (h - h1)
3.86 (h x h1)
3.86 π (h + h1)

18. Soundings are required for

making nautical charts for navigation
ascertaining the areas subject to scour or silting
obtaining detailed information for construction
all the above.

19. The dock wall is designed as a gravity retaining wall and is tested for

back fill pressure when the dock is empty
maximum water pressure from the dock without any back fill
the load charge transmitted to the dock by the movement of loaded vehicles or trains on the way
all of the above.

20. The shape of docks and basins is generally kept

rectangular ways
diamond shape quays
inclined quays
all of these.

21. Surf zone is :

the fathom line of 10 m depth
the fathom line of 5 m depth
the swell of the sea breaking on the shore or reefs
the coast line attacked by the waves.

22. Which one of the following lines is used for tying a ship with a dock

bow line
spring line
break line
all of these.

23. The horizontal angles from the boat between A and B and B and C, the stations on the shore are respectively θ1 and θ2. The distances AB = L1 and BC = L2. For calculating the angle α2 at C between the boat and station B is obtained by using the following formula: where (β is horizontal angle between A and C at B).

αt tan α2 = 360° - (θ1 + θ2 + β) = φ
tan α2 = sin φ/(K + cos φ)
(sin α1/sin α2) = (L2 sin θ1/L1 sin θ2) = K
all the above.

24. Due to the impact of water wave on a sea shore structure

hydrostatic pressure coupled with a strong momentary impact is caused
vibrations are subjected
weakens the foundation
all of the above.

25. On a hydrographic map, the following feature is shown :

high and low water lines
depth contours
land and water areas
all the above.

26. Pick up the incorrect statement from the following: In a dry dock block made of hard wood,

the lowest block is 1.8 m long 40 cm x 40 cm in cross-section
the middle block is 1.6 m long 40 cm x 40 cm in crosss-section
the top block is 1.2 m long 40 cm x 40 cm in cross-section
none of these.

27. A harbour is a place where

ships get shelter and protection against destructive forces due to sea waves
facilities are provided for receiving cargo and passengers
port buildings are constructed for commercial purposes
all the above.

28. The fixed mooring does not require

mooring post
bollard
anchors
capstan.

29. P and Q are two stations on the shore line at distance d. If the angle between Q and the boat O and P is a and the angle between P and Q at boat O is β, the x and y. Coordinate along PQ and perpendicular to PQ from O are :

x=dtanαtanβtanα+tanβ;Y=dtanβtanα+tanβ
x=dtanβtanα+tanβ;Y=dtanαtanβtanα+tanβ
x=dtanβtanα−tanβ;Y=dtanαtanβtanα−tanβ
none of the above.

30. The low water datum for a lake is defined as the surface of the lake when it is at elevation

180.5 m above M.S.L.
190.5 m above M.S.L.
170.5 m above M.S.L.
200.0 m above M.S.L.

31. Cretans :

are the harbours established on the island south east of Greek mainland
are the natives of crete, an island south of Greek mainland
are the plants, grown in the neighbourhood of harbours
none of the above.

32. The important component of a sea port is

terminal buildings
the docks
the harbour
all of these.

33. Which one of the following statements is not relevant to hydrographic survey :

establishment of horizontal control points on the shore
determination of the sea bed profile
depicting the irregularities in the shore line, islands and projecting rocks
none of these.

34. The shore line survey includes :

depicting the shore line
depicting the prominent details on shore line
depicting the high water line
all the above.

35. The smoothened surface of the front face of the guay walls, is known as fending which is made of

granite stone
timber
steel
all the above.

36. A lead line or sounding line

should be soaked in water for about one hour prior to taking soundings
is adjusted at regular interval
is generally used for depths exceeding 6 m
all the above.

37. Which one of the following land marks on the coast line must be depicted on hydrographic maps ?

shore line
light houses
church spires
all the above.

38. Depth of borings for soil investigation, is generally kept below low water level

30 m
35 m
45 m
40 m

39. The wavelength is computed by Bertin's formula (where T is the period in seconds).

L=T2πg
L=T22πg
L=2Tπg
L=2T2πg

40. Littoral drift

is the raised line of sand, parallel to the sea coast
is the slow movement of surface water at sea caused by the wind
is a current parallel to the shore, caused due to tangential component of the wind
is a current perpendicular to the shore line caused due to wind.

41. The heaviest line is used to democrate

the low water line
the high water line
the limit of swamps
the direction of current.

42. If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is

0.34 F
0.20 F
0.28 F
0.15 F

43. A low wall built out into the sea more or less perpendicular to the coast line, to resist the travel of sand and shingle along a beach, is called

break water
break wall
groins
shore wall.

44. At a place the shore line is along North West-South East. The wind is blowing from the north. The littoral drift will be along

south east
south
south west
west

45. Flow of air from one place to the other is caused due to

the sum of elevation
pressure head
velocity head
all of the above.

46. According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for cargo vessels is

5.5 and 6.0 to 1
6.2 and 6.8 to 1
7.4 and 7.8 to 1
8.2 and 8.5 to 1

47. Buoys which support the cables to which vessels are attached are of

cylindrical shape
drum
spherical shape
all of these.

48. The beach is built:

with largest material locally available to the waves
with large material locally available to the waves
with fine material locally available to the waves
with finest material locally available to the waves.

49. If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

0.6 Hs and 1.67 Hs
0.6 Hs and 1.87 Hs
1.27 Hs and 1.87 Hs
1.27 Hs and 1.67 Hs

50. 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

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Docks and Harbour Engineering MCQ Civil Engineering

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