A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called_________________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. 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_________________?

   A. Surf
   B. Clapotis
   C. Fetch
   D. Swell

6. As compared to wall type breakwater, mound type breakwater_________________?

   A. requires skilled labour
   B. requires low maintenance cost
   C. requires less material
   D. results in less damage due to gradual failure

7. 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_________________?

   A. 2.5 m
   B. 4 m
   C. 5 m
   D. 7 m

8. 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

9. 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

10. 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