This arrangement has the advantage of allowing moisture from the cargo drain into the bilge pockets on each side.
Double bottom spaces in which the inner bottom is higher at centre line than at sides.The impact of the water surface against the side or bottom of a ship hull, whether caused by ship velocity, water velocity, or both.Ship steering at very low speeds is thus possible and the rudder angle can be greater than 35degrees.An active rudder in which a small motor driven propeller is incorporated in a streamlined casing.The pins of bolt that hinge the rudder to the gudgeons on the rudder post.The fraction is called the factor of subdivision.The permissible length is some fraction of the floodable length. The length between bulkheads on a ship in order to ensure that it will remain afloat if one, or more, compartments are flooded.The ratio of water which can enter with the volume of the empty compartment.The pulsation in and out of the bow and stern plating as the ship alternately rises and plunges deep into the water.They are peculiarly curved plates, fitted where the stern frame meets the overhang of the stern.When the margin plate is turned down at the bilge it forms the outboard boundary of the double bottom, connecting the inner bottom in the shell plating at the bilge.
MEO Orals on Naval Architecture Function 3 Part 3 Lightening holes