_________________ is enclosed or partially enclosed basins provided with locks and entrance gate to keep the water level constant.

_________________ are provided to overcome the differences of water level.

What will happen by increasing the rise of lock gate?

For designing the graving dock, the proportion of ship load assumed to be borne by keel block is ___________.

For designing the graving dock, the proportion of ship load assumed to be borne by bilge block is ___________.

Pick up the correct statement (i) The curved gates are longer than the straight gates. (ii) The curved gates are require large gate recesses. (iii) With the increase in curvature the transverse stresses due to water pressure increases.