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

1.7412
1.5612
1.3412
1.9412

## Docks and Harbor Engineering In basins subjected to strong winds and tide, the length of the berthing area should not be less than

The length of design vessel
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

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

## 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

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

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