Sec. 17.
That the board is authorized and directed to take over on January 1, 1921, the possession and control of, and to maintain and develop, all docks, piers, warehouses, wharves and terminal equipment and facilities, including all leasehold easements, rights of way, riparian rights and other rights, estates and interests therein or appurtenant thereto, acquired by the President by or under the Act entitled "An Act making appropriations to supply urgent deficiencies in appropriations for the fiscal year ending June 30, 1918, and prior fiscal years, on account of war expenses, and for other purposes," approved March 28, 1918.
The possession and control of such other docks, piers, warehouses, wharves and terminal equipment and facilities or parts thereof, including all leasehold easements, rights of way, riparian rights and other rights, estates or interests therein or appurtenant thereto which were acquired by the War Department or the Navy Department for military or naval purposes during the war emergency may be transferred by the President to the board whenever the President deems such transfer to be for the best interests of the United States.
The President may at any time he deems it necessary, by order setting out the need therefor and fixing the period of such need, permit or transfer the possession and control of any part of the property taken over by or transferred to the board under this section to the War Department or the Navy Department for their needs, and when in the opinion of the President such need therefor ceases the possession and control of such property shall revert to the board. None of such property shall be sold except as may be hereafter provided by law.