Docks and Harbor Engineering
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
Bulk heads, revetments and groynes
Sea walls, bulk heads and revetments
Sea walls, revetments and groynes

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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:

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

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