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 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
1.2 H to 1.25 H above the mean sea level

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

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Docks and Harbor Engineering
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) and (iii) are correct
(i), (ii) and (iii) are correct
(ii) and (iii) are correct
(i) and (ii) are correct

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