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  • Question
  • Pick up the correct statement from the following:


  • Options
  • A. The regular periodic rise and fall of the surface of the sea, is called tide.
  • B. The average difference in water level between high tide and low tide at a place, is called tidal range
  • C. The movement of water caused by the action of tide, is called a tidal current
  • D. all of the above.

  • Correct Answer
  • all of the above. 


  • Docks and Harbours problems


    Search Results


    • 1. The dock wall is designed as a gravity retaining wall and is tested for

    • Options
    • A. back fill pressure when the dock is empty
    • B. maximum water pressure from the dock without any back fill
    • C. the load charge transmitted to the dock by the movement of loaded vehicles or trains on the way
    • D. all of the above.
    • Discuss
    • 2. The horizontal angles from the boat between A and B and B and C, the stations on the shore are respectively ?1 and ?2. The distances AB = L1 and BC = L2. For calculating the angle ?2 at C between the boat and station B is obtained by using the following formula: where (? is horizontal angle between A and C at B).

    • Options
    • A.
    • B. ?t tan ?2 = 360° - (?1 + ?2 + ?) = ?
    • C.
    • D. all the above.
    • Discuss
    • 3. Pick up the correct statement from the following:

    • Options
    • A. The artificial barrier constructed to enclose "n area for safe anchorage, is called break water
    • B. The smoothened surface at the top end of the vertical face of a guay wall, is called fending
    • C. The effective berthing lengths of inclined guays can be adjusted
    • D. All the above.
    • Discuss
    • 4. Soundings are required for

    • Options
    • A. making nautical charts for navigation
    • B. ascertaining the areas subject to scour or silting
    • C. obtaining detailed information for construction
    • D. all the above.
    • Discuss
    • 5. Pick up the correct statement from the following:

    • Options
    • A. The breakwater which can be used as a platform for loading and unloading of cargo is called a mole
    • B. The brick masonry retaining wall which is used for loading and unloading of cargo is called guay wall
    • C. Three types of break waters are generally provided in harbours
    • D. All of the above.
    • Discuss
    • 6. Pick up the correct statement from the following:

    • Options
    • A. An artificial barrier which makes the enclosed area safe for anchorage of ships, is known as break water
    • B. The break water whose inside is used as a plateform for loading and unloading is called a mole
    • C. The length of the quay wall is governed by the length of the largest vessel likely to be berthed
    • D. All the above.
    • Discuss
    • 7. According to the recommendations of International Navigational Congress in 1912, the ratio of length to width at the entrance for passenger vessels is :

    • Options
    • A. 7.25 to 1
    • B. 7.80 to 1
    • C. 8.11 to 1
    • D. 8.44 to 1
    • Discuss
    • 8. The fixed mooring does not require

    • Options
    • A. mooring post
    • B. bollard
    • C. anchors
    • D. capstan.
    • Discuss
    • 9. If F is the fetch, the straight line distance of open water available in kilometres, the height of the wave in metres is

    • Options
    • A. 0.15 F
    • B. 0.20 F
    • C. 0.28 F
    • D. 0.34 F
    • Discuss
    • 10. At a place the shore line is along North West-South East. The wind is blowing from the north. The littoral drift will be along

    • Options
    • A. south east
    • B. south
    • C. south west
    • D. west
    • E. north west
    • Discuss


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