IMPOSITION AND RECOVERY OF RATES AT PORTS
Section 51: Power to levy concessional rates in certain cases.
In framing scales under any of the foregoing provisions of this Chapter, the Authority may prescribe a lower rate in respect of,—
(a) costal goods, that is to say, goods, other than imported goods as defined in the Customs Act, 1962 (52 of 1962), carried in a vessel from one Indian port to another Indian port:
Provided that the Authority shall not make any discrimination between one Indian port and another such port in prescribing a lower rate under this section;
(b) other goods, in special cases.