law: The Major Port Authorities Act, 2021
  40. Establishment and application of sinking fund.-
  (1) In respect of loans raised by the respective Board of the Major Port Authorities under this Act, which are not repayable before the expiration of one year from the date of such loans, such Boards shall set apart out of their income enough sinking fund or funds to service or liquidate such loans for a period of at least one year.
  (2) Before the commencement of this Act, if any sinking fund had been established by the Board of Trustees constituted under the Major Port Trusts Act, 1963 (38 of 1963) in respect of a loan raised by it for which loan, the Board is liable under this Act and the sinking fund so established by that Board of Trusts shall be deemed to have been established by the Board under this Act.
  (3) The sums so set apart by the Board under sub-section (1) and the sums forming part of any sinking fund referred to in sub-section (2) shall be applied in such manner as may be prescribed.
  (4) The Board may apply the whole or any part of the sums accumulated in any sinking fund in or towards the discharge of the monies borrowed for the repayment of which the fund has been established:
  Provided that the Board pays into the fund in each year, and accumulates until the whole of the monies borrowed are discharged, a sum equivalent to the interest which would have been produced by the sinking fund, or the part of the sinking fund so applied.