## Docks and Harbor Engineering Assertion A : Basin walls have to be of much grater height than dock walls.Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations.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 correct explanation of A.
Both A and R are true and R is the correct explanation of A.

## Docks and Harbor Engineering A ship strikes the berth generally at an angle

10° with the face of the dock
45° with the face of the dock
90° with the face of the dock
30° with the face of the dock

43967
43906
43898
43959

None of these
Barge method
Low level method
Staging method

2.5 m
4 m
5 m
7 m

## Docks and Harbor Engineering In a two lane channel, bottom width of channel is given by

Manoeuvring lane + (2 × Bank clearance lane)
(2 × Manoeuvring lane) + (2 × Bank clearance lane)
(2 × Manoeuvring lane) + (2 × Bank clearance lane + ship clearance lane)
Manoeuvring lane + (2 × Bank clearance lane) + ship clearance lane