§ 871. Repair and operation of vessels until sale
All vessels may be reconditioned and kept in suitable repair and until sold shall be managed and operated by the Secretary of Transportation or chartered or leased by him on such terms and conditions as the Secretary of Transportation shall deem wise for the promotion and maintenance of an efficient merchant marine, pursuant to the policy and purposes declared in section 861 of this Appendix and section 5 of this Act.
The term “reconditioned” as used in this section includes the substitution of the most modern, most efficient, and most economical types of internal-combustion engines as the main propulsive power of vessels. Should the Secretary of Transportation have any such engines built in the United States and installed, in private shipyards or navy yards of the United States, in one or more merchant vessels owned by the United States, and the cost to the Secretary of Transportation of such installation exceeds the amount of funds otherwise available to him for that use, the Secretary of Transportation may transfer to his funds from which expenditures under this section may be paid, from his construction fund authorized by section 11  of the Merchant Marine Act, 1920, so much as in his judgment may be necessary to meet obligations under contracts for such installation; and the Treasurer of the United States shall, at the request of the Secretary of Transportation, make the transfer accordingly: Provided, That the total amount expended by the Secretary of Transportation for this purpose shall not in the aggregate exceed $25,000,000. Any such vessel after June 5, 1920, so equipped by the Secretary of Transportation under the provisions of this section shall not be sold for a period of five years from the date the installation thereof is completed, unless it is sold for a price not less than the cost of the installation thereof and of any other work of reconditioning done at the same time plus an amount not less than $10 for each dead-weight ton of the vessel as computed before such reconditioning thereof is commenced. The date of the completion of such installation and the amount of the dead-weight tonnage of the vessel shall be fixed by the Secretary of Transportation: Provided further, That in fixing the minimum price at which the vessel may thus be sold the Secretary of Transportation may deduct from the aggregate amount above prescribed 5 per centum thereof per annum from the date of the installation to the date of sale as depreciation: And provided further, That no part of such fund shall be expended upon the reconditioning of any vessel unless the Secretary of Transportation shall have first made a binding contract for a satisfactory sale of such vessel in accordance with the provisions of this Act, or for the charter or lease of such vessels for a period of not less than five years by a capable, solvent operator; or unless the Secretary of Transportation is prepared and intends to directly put such vessel in operation immediately upon completion. Such vessel, in any of the enumerated instances, shall be documented under the laws of the United States and shall remain documented under such laws for a period of not less than five years from the date of the completion of the installation, and during such period it shall be operated only on voyages which are not exclusively coastwise.
 See References in Text note below.