11. For designing the dock, the proportion of ship load assumed to be borne by keel blocks is
12. As compared to wall type breakwater, mound type breakwater
13. The maximum harbour depth below lowest low water is generally equal to
(i) loaded draft + 1.2 m when bottom is rock
(ii) loaded draft + 1.8 m when bottom is soft
(iii) loaded draft + 1.2 m when bottom is soft
(iv) loaded draft + 1.8 m when bottom is rock
(i) loaded draft + 1.2 m when bottom is rock
(ii) loaded draft + 1.8 m when bottom is soft
(iii) loaded draft + 1.2 m when bottom is soft
(iv) loaded draft + 1.8 m when bottom is rock
14. If H is the height of the wave expected, then the height of the breakwater is generally taken as
15. Which of the following structures protects the shore by trapping of littoral drift?
16. A ship is berthed in a chamber and lifted by principles of buoyancy Such a chamber is called.
17. Minimum width of ship clearance shall be (where “B” is beam of the design vessel)
18. As per Berlin's formula, the length of wave in meters is given by
(Where 't' is the period in seconds for two successive waves to pass the same section.)
(Where 't' is the period in seconds for two successive waves to pass the same section.)