DOCKS AND HARBOR ENGINEERING QUIZ

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

Refuge dock

Floating dock

Dry dock

Wet dock

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 (iii) are correct

(i) and (ii) are correct

(ii) and (iii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.5 B

50 m

B or 30 m

1.5 B or 50 m

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.

A is false but R is true.

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

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

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

Fetch

Clapotis

Surf

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum harbour depth below lowest low water is generally equal to(i) loaded draft + 1.2 m when bottom is rock(ii) loaded draft + 1.8 m when bottom is soft(iii) loaded draft + 1.2 m when bottom is soft(iv) loaded draft + 1.8 m when bottom is rock

(i) and (ii) are correct

(i) and (iii) are correct

(iii) and (iv) are correct

(ii) and (iv) are correct

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:

A is false but R is true.

A is true but R is false.

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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

TRUE ANSWER : ?
YOUR ANSWER : ?

The most popular method of construction of wall breakwaters is

Barge method

None of these

Staging method

Low level method

TRUE ANSWER : ?
YOUR ANSWER : ?

The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be

2.0 L

1 L

1.5 L

4.0 L

TRUE ANSWER : ?
YOUR ANSWER : ?

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