## If Hs is the significant wave height, then the average wave height and highest wave height respectively are given by_______________?

If Hs is the significant wave height, then the average wave height and highest wave height respectively are given by_______________?

A. 0.6 Hs and 1.67 Hs
B. 0.6 Hs and 1.87 Hs
C. 1.27 Hs and 1.87 Hs
D. 1.27 Hs and 1.67 Hs

## 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?

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?

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

## Consider the following statements in regard to Beaufort scale for wind speeds______________?

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

select the correct statments.
A. (i) and (ii) are correct
B. (ii) and (iii) are correct
C. (i) and (iii) are correct
D. (i), (ii) and (iii) are correct

## Dead weight tonnage of a ship_______________?

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

select the correct statemens.
A. i) and ii) are correct
B. ii) and iii) are correct
C. i) and iii) are correct
D. Only iii) is correct

## The maximum harbour depth below lowest low water is generally equal to_________________?

The maximum harbour depth below lowest low water is generally equal to_________________?

(i) loaded draft + 1.2 m when bottom is rock
(ii) loaded draft + 1.8 m when bottom is soft
(iii) loaded draft + 1.2 m when bottom is soft
(iv) loaded draft + 1.8 m when bottom is rock

select the correct the correct statements.
A. (i) and (ii) are correct
B. (i) and (iii) are correct
C. (ii) and (iv) are correct
D. (iii) and (iv) are correct

## 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__________________?

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__________________?

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

## In basins subjected to strong winds and tide, the length of the berthing area should not be less than____________________?

In basins subjected to strong winds and tide, the length of the berthing area should not be less than____________________?

A. the length of design vessel
B. the length of design vessel + 10% clearance between adjacent vessels
C. the length of design vessel + 20% clearance between adjacent vessels
D. twice the length of design vessel

## As per Berlin’s formula, the length of wave in metres is given by_______________?

As per Berlin’s formula, the length of wave in metres is given by_______________?

A. 1.3412
B. 1.5612
C. 1.7412
D. 1.9412
where ‘t’ is the period in seconds for two successive waves to pass the same section

## In a two lane channel, bottom width of channel is given by_______________?

In a two lane channel, bottom width of channel is given by_______________?

A. Manoeuvring lane + 2 x Bank clearance lane
B. 2 x Manoeuvring lane + 2 x Bank clearance lane
C. 2 x Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane
D. Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane

## Select the incorrect statement ?

Select the incorrect statement ?

A. The progress of work in low level method of mound construction is very slow.
B. Barge method of mound construction is economical.
C. In low level method of mound construction, the area of working is limited.
D. In staging method of mound cons-truction, the work is not interrupted even during stormy weather