(f)prescribe the period within which, and the manner in which, the owner of an inland [mechanically propelled vessel] [Substituted by Act 35 of 1977, Section 5, for " steam-vessel" (w.e.f. 1.5.1978).] shall make a report of any alteration in the vessel under section 19J;(fa)[ prescribe the authority and provide for furnishing to such authority the information with respect to the inland mechanically propelled vessel and its registration under sub-section (5) of section 19K;] [Inserted by Act 35 of 1977, Section 14, (w.e.f. 1.5.1978).]