- A. Two points
- B. Four points
- C. Six points
- D. Eight points
Docks and Harbor Engineering
-
In multiple point mooring system, vessel is secured to minimum of_____.
-
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. 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.
-
For designing the dock, the proportion of ship load assumed to be borne by keel blocks is_____.
- A. 5/8
- B. 3/8
- C. 3/16
- D. 5/16
-
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
-
A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
- A. Dry dock
- B. Wet dock
- C. Floating dock
- D. Refuge dock
-
Which of the following are repair docks ?
- A. marine railways, dry docks, floating docks, wet docks
- B. dry docks, wet docks, floating docks, lift docks
- C. wet docks, floating docks, lift docks, marine railways
- D. wet docks, lift docks, marine railways, dry docks
-
Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area?
- A. Sea walls, bulk heads and groynes
- B. Sea walls, bulk heads and revetments
- C. Sea walls, revetments and groynes
- D. Bulk heads, revetments and groynes
-
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. 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.
-
As compared to wall type breakwater, mound type breakwater_____.
- A. Requires skilled labor
- B. Requires low maintenance cost
- C. Requires less material
- D. Results in less damage due to gradual failure
-
Which of the following type of sea walls results in greatest protection of shore structures?
- A. vertical sea wall
- B. sea wall with batter
- C. stepped sea wall
- D. sea wall with concave face