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

2.5 m

5 m

4 m

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 : ?

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

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 and R is the 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.

A is true but R is false.

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Wet dock

Refuge dock

Dry dock

Floating dock

TRUE ANSWER : ?
YOUR ANSWER : ?

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

(i) and (ii) are correct

Only (iii) is correct

Only (ii) is correct

(i) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Minimum width of ship clearance shall be (where “B” is beam of the design vessel)

50 m

1.5 B

1.5 B or 50 m

B or 30 m

TRUE ANSWER : ?
YOUR ANSWER : ?

When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called

Swell

Surf

Fetch

Clapotis

TRUE ANSWER : ?
YOUR ANSWER : ?

For designing the dock, the proportion of ship load assumed to be borne by keel blocks is

43898

43967

43906

43959

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements in regard to Beaufort scale for wind speeds,(i) The Beaufort number ranges from 1 to 12.(ii) Higher Beaufort number indicates higher speed of wind,(iii) Beaufort number for calm is smallest and for hurricane is highest Of these statements

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

(ii) and (iii) are correct

(i) and (ii) are correct

(i) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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