46 U.S.C. § 50304

(a) Authority To Sell .— The Secretary of Transportation may sell property (other than vessels transferred under section 4 of the Merchant Marine Act, 1920 (ch. 250, 41 Stat. 990 )) on terms the Secretary considers appropriate. (b) Transfers From Military to Civilian Control .— When the President considers it in the interest of the United States, the President may transfer to the Secretary of Transportation possession and control of property described in the second paragraph of section 17 of the Merchant Marine Act, 1920 (ch. 250, 41 Stat. 994 ), as originally enacted, that is possessed and controlled by the Secretary of a military department. (c) Transfers From Civilian to Military Control .— When the President considers it necessary, the President by executive order may transfer to the Secretary of a military department possession and control of property described in section 17 of the Merchant Marine Act, 1920 (ch. 250, 41 Stat. 994 ), as originally enacted, that is possessed and controlled by the Secretary of Transportation. The President’s order shall state the need for the transfer and the period of the need. When the President decides that the need has ended, the possession and control shall revert to the Secretary of Transportation. The property may not be sold except as provided by law. (d) Vessel Charters to Other Departments .— On a reimbursable or nonreimbursable basis, as determined by the Secretary of Transportation, the Secretary may charter or otherwise make available a vessel under the jurisdiction of the Secretary to any other department, upon the request by the Secretary of the Department that receives the vessel. The prior consent of the Secretary of Defense for such use shall be required with respect to any vessel in the Ready Reserve Force or in the National Defense Reserve Fleet which is maintained in a retention status for the Department of Defense.