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. one – third highest waves
B. one – fourth highest waves
C. one – fifth highest waves
D. one – tenth highest waves

A. 2.073 m
B. 8.169 m
C. 9.144 m
D. 6.8 m

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

A. Dry dock
B. Wet dock
C. Floating dock
D. Refuge dock

(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

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