A charter by the Secretary of Transportation under this chapter shall demise the vessel to the charterer subject to all usual conditions contained in a bareboat charter. The charter shall be for a term the Secretary considers to be in the best interest of the United States Government and the merchant marine.

The Secretary of Transportation shall reject any bid for the charter under this subchapter of a vessel constructed under this subtitle or the Merchant Marine Act, 1936, if the charter hire offered is lower than the minimum charter hire would be if the vessel were chartered under section 57531 of this title.

If the Secretary of Transportation considers it necessary, the Secretary may make a contract with a charterer of a vessel owned by the Secretary for payment of an operating-differential subsidy, on the same terms and conditions, and subject to the same limitations and restrictions, as otherwise provided with respect to payment of operating-differential subsidies to operators of privately-owned vessels.

The Secretary of Transportation shall require a charterer of a vessel of the Secretary to deposit with the Secretary an undertaking, with approved sureties, in such amount as the Secretary may require as security for the faithful performance of the terms of the charter, including indemnity against liens on the chartered vessel.

A charter under this chapter shall require the charterer to carry, at the charterer’s expense, insurance on the chartered vessel covering all marine and port risks, protection and indemnity risks, and all other hazards and liabilities, adequate to cover damages claimed against and losses sustained by the chartered vessel arising during the term of the charter. The insurance shall be in such form, in such amount, and with such companies as the Secretary of Transportation may require. In accordance with law, any of the insurance risks may be underwritten by the Secretary.

A charter under this chapter shall provide that during a national emergency proclaimed by the President or a period for which the President has proclaimed that the security of the national defense makes it advisable, the Secretary of Transportation may terminate the charter without cost to the United States Government on such notice to the charterer as the President determines.

Every contract executed by the Secretary of Transportation under this chapter shall contain provisions requiring (1) that, the contractor and every affiliate, domestic agent, subsidiary, or holding company connected with, or directly or indirectly controlling or controlled by, the contractor, to keep its books, records, and accounts, relating to the maintenance, operation, and servicing of the vessels, services, routes, and lines covered by the contract, in such form and under such regulations as may be prescribed by the Secretary of Transportation; (2) that the contractor and every affiliate, domestic agent, subsidiary, or holding company connected with, or directly or indirectly controlling or controlled by, the contractor, to file, upon notice from the Secretary of Transportation, balance sheets, profit and loss statements, and such other statements of financial operations, special report, memoranda of any facts and transactions, which in the opinion of the Secretary of Transportation affect the financial results in, the performance of, or transactions or operations under, such contract; (3) that the Secretary of Transportation shall be authorized to examine and audit the books, records, and accounts of all persons referred to in this section whenever he may deem it necessary or desirable; and (4) that upon the willful failure or refusal of any person described in this section to comply with the contract provisions required by this section, the Secretary of Transportation shall have the right to rescind the contract, and upon such rescission, the United States shall be relieved of all further liability on such contract.