Docks and Harbor Engineering
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 low water level
1.2 H to 1.25 H above the datum
1.2 H to 1.25 H above the high water level

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Docks and Harbor Engineering
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 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 a correct explanation of A.
A is true but R is false.

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Docks and Harbor Engineering
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 + 10% clearance between adjacent vessels
The length of design vessel + 20% clearance between adjacent vessels
The length of design vessel

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

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