For designing the dock, the proportion of ship load assumed to be borne by keel blocks is________________?

Related Mcqs:

1. 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.

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________________?

   A. beam
   B. depth
   C. freeboard
   D. draft

3. Minimum width of ship clearance shall be__________________?

   A. B or 30 m
   B. 1.5 B or 50 m
   C. 1.5 B
   D. 50 m

   where “B” is beam of the design vessel

4. 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

5. A ship strikes the berth generally at an angle_________________?

   A. 90° with the face of the dock
   B. 45° with the face of the dock
   C. 30° with the face of the dock
   D. 10° with the face of the dock

6. Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?

   A. when the dock is empty
   B. when the dock is empty with the ship of maximum tonnage
   C. when the dock is full of water
   D. when the dock is dry and is under construction

7. As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by__________________?

   A. 0.34 VF
   B. 0.5 VF
   C. 1.5 VF
   D. 3.4 VF
   where F is the fetch in km

8. In multiple point mooring system, vessel is secured to minimum of____________________?

   A. two points
   B. four points
   C. six points
   D. eight points

9. By increasing the rise of lockgates_______________?

   (i) the length of the lock gate will increase
   (ii) transverse stress due to water pressure on the gate will increase
   (iii) compressive force on the gate will increase
   select the correct statements?

   A. (i) and (ii) are correct
   B. (i) and (iii) are correct
   C. Only (ii) is correct
   D. Only (iii) is correct

10. 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