1. 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:
2. When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as
3. The maximum harbour depth below lowest low water is generally equal to
4. The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be
5. Dead weight tonnage of a ship
6. In basins subjected to strong winds and tide, the length of the berthing area should not be less than
7. As per Stevenson's empirical formula, the approximate value of the height of the wave in metres is given by
8. As per Berlin's formula, the length of wave in metres is given by
9. Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section.
Reason R : No wave can have a height greater than the depth of water through which it passes.
Select your answer based on the coding system given below:
10. Consider the following statements in regard to Beaufort scale for wind speeds,
11. At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be
12. In a two lane channel, bottom width of channel is given by
13. Minimum width of ship clearance shall be
14. Select the incorrect statement.
15. Assertion A : Marine structures are made specially bulky and strong.
Reason R : Sea insects result in undermining of the hardest and the soundest building material. Select your answer based on the coding system given below:
16. The most popular method of construction of wall breakwaters is
17. As compared to wall type breakwater, mound type breakwater
18. The difference in height between highest high water and lowest low water is called
19. If the maximum spring rise is 2 m and height of the waves expected is 4 m , then the breakwater height above the datum will be
20. If H is the height of the wave expected, then the height of the breakwater is generally taken as
21. 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:
22. In multiple point mooring system, vessel is secured to minimum of
23. By increasing the rise of lockgates,
24. Which of the following is a fixed type mooring accessory ?
25. The significant wave height is defined is the average height of the
26. If Hs is the significant wave height, then the average wave height and highest wave height respectively are given by
27. 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
28. Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area ?
29. Which of the following type of sea walls results in greatest protection of shore structures?
30. 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.
31. Which of the following are repair docks ?
32. Which of the following structures protects the shore by trapping of littoral drift?
33. Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?
34. For designing the dock, the proportion of ship load assumed to be borne by keel blocks is
35. A ship strikes the berth generally at an angle
36. Consider the following statements.
37. A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
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:
2. When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as
3. The maximum harbour depth below lowest low water is generally equal to
4. The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be
5. Dead weight tonnage of a ship
6. In basins subjected to strong winds and tide, the length of the berthing area should not be less than
7. As per Stevenson's empirical formula, the approximate value of the height of the wave in metres is given by
8. As per Berlin's formula, the length of wave in metres is given by
9. Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section.
Reason R : No wave can have a height greater than the depth of water through which it passes.
Select your answer based on the coding system given below:
10. Consider the following statements in regard to Beaufort scale for wind speeds,
11. At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be
12. In a two lane channel, bottom width of channel is given by
13. Minimum width of ship clearance shall be
14. Select the incorrect statement.
15. Assertion A : Marine structures are made specially bulky and strong.
Reason R : Sea insects result in undermining of the hardest and the soundest building material. Select your answer based on the coding system given below:
16. The most popular method of construction of wall breakwaters is
17. As compared to wall type breakwater, mound type breakwater
18. The difference in height between highest high water and lowest low water is called
19. If the maximum spring rise is 2 m and height of the waves expected is 4 m , then the breakwater height above the datum will be
20. If H is the height of the wave expected, then the height of the breakwater is generally taken as
21. 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:
22. In multiple point mooring system, vessel is secured to minimum of
23. By increasing the rise of lockgates,
24. Which of the following is a fixed type mooring accessory ?
25. The significant wave height is defined is the average height of the
26. If Hs is the significant wave height, then the average wave height and highest wave height respectively are given by
27. 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
28. Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area ?
29. Which of the following type of sea walls results in greatest protection of shore structures?
30. 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.
31. Which of the following are repair docks ?
32. Which of the following structures protects the shore by trapping of littoral drift?
33. Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?
34. For designing the dock, the proportion of ship load assumed to be borne by keel blocks is
35. A ship strikes the berth generally at an angle
36. Consider the following statements.
37. A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
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