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Docks and Harbor Engineering

Docks and Harbor Engineering
The difference in height between highest high water and lowest low water is called

Mean rise
Mean range
Maximum range
Maximum rise

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

1.5 B
B or 30 m
50 m
1.5 B or 50 m

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Docks and Harbor Engineering
Dead weight tonnage of a ship(i) varies with latitude and season(ii) is more than displacement tonnage(iii) is the difference between displacement load and displacement light Of these statements

Only (iii) is correct
(i) and (ii) are correct
(i) and (iii) are correct
(ii) and (iii) are correct

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Docks and Harbor Engineering
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

Fetch
Swell
Clapotis
Surf

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Docks and Harbor Engineering
If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

0.6 Hs and 1.67 Hs
0.6 Hs and 1.87 Hs
1.27 Hs and 1.87 Hs
1.27 Hs and 1.67 Hs

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Docks and Harbor Engineering
The most popular method of construction of wall breakwaters is

Low level method
Staging method
Barge method
None of these

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