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
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
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
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
Which of the following structures protects the shore by trapping of littoral drift?
(A) groynes
(B) sea walls
(C) revetments
(D) moles
Which of the following structures are constructed parallel to shore line to develop a demarcating line between land area and water area ?
(A) sea walls, bulk heads and groynes
(B) sea walls, bulk heads and revetments
(C) sea walls, revetments and groynes
(D) bulk heads, revetments and groynes
Which of the following is a fixed type mooring accessory ?
(A) bollard
(B) buoys
(C) cables
(D) anchors
In multiple point mooring system, vessel is secured to minimum of____________________?
(A) two points
(B) four points
(C) six points
(D) eight points
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
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