; and (E) the contractual actions that will ensure the estimated cost savings are realized. (2) There is a reasonable expectation that throughout the contemplated contract period the Secretary of the Navy will request funding for the contract at the level required to avoid contract cancellation. (3) There is a stable design for the property to be acquired and the technical risks associated with such property are not excessive. (4) The estimates of both the cost of the contract and the anticipated cost avoidance through the use of a contract authorized under subsection (a) are realistic. (5) The use of such a contract will promote the national security of the United States. (6) During the fiscal year in which such contract is to be awarded, sufficient funds will be available to perform the contract in such fiscal year, and the future-years defense program (as defined under section 221 of title 10, United States Code) for such fiscal year will include the funding required to execute the program without cancellation. (c) Use of incremental funding With respect to a contract or contracts entered into pursuant to subsection (a)(1)(B), the Secretary of the Navy may use incremental funding to make payments under the contract with funds appropriated to the Shipbuilding and Conversion, Navy or National Sea Based Deterrence Fund accounts through fiscal year 2025. (d) Authority for advance procurement The Secretary of the Navy may enter into one or more contracts for advance procurement associated with a vessel or vessels for which authorization to enter into a multiyear procurement contract is provided under subsection (a), and for systems and subsystems associated with such vessels in economic order quantities when cost savings are achievable. (e) Condition for out-Year contract payments A contract entered into under subsection (a) shall provide that any obligation of the United States to make a payment under the contract for a fiscal year is subject to the availability of appropriations for that purpose for such fiscal