In case of pump-rooms whose bottom plate is located above the baseline by at least the minimum height required in above paragraph, there will be no need for a double bottom construction in way of the pump-room.
Ballast pumps shall be provided with suitable arrangements to ensure efficient suction from double bottom tanks.
If the flooding of the pump-room would not render the ballast or cargo pumping system inoperative, a double bottom need not be fitted.
They shall be located on the end bulkhead and or on the outboard side of the superstructure or deckhouse at a distance of at least L/25 but not less than 3 m from the end of the superstructure or deckhouse facing the cargo area.