The Secretary or the Administrator of the Maritime Administration is authorized to advance to the Federal Ship Financing Fund from the “Vessel operations revolving fund” (
46 U.S.C. 1241a), such amounts as may be required for the payment, pursuant to section
1275 of this Appendix, of unpaid principal amounts of defaulted mortgages and loans and of unpaid interest thereon: Provided, That such advances shall be repaid to the “Vessel operations revolving fund” as soon as practicable consistent with the status of the Federal Ship Financing Fund: Provided further, That the total advances outstanding at any one time shall not exceed $10,000,000.