However, it expects an increase in iron ore volume due to scrapping of export duty on low grades of the ore and resumption of mining in Goa.
"The near to medium term outlook of cargo growth remains subdued with uncertainty associated with particular cargo categories like imported coal due to narrowing domestic demand-supply gap following the increase in coal production by Coal India, and containers, due to the relatively weak global environment affecting exim trade," it said in a statement.
Over the medium to long term, outlook for cargo growth continues to be strong, driven by domestic requirements of coal and crude oil for power and other sectors, Icra said.
On regulatory front, the draft Central Port Authorities Act is likely to usher in the changes that would allow incumbents to take investment decisions at major ports with more clarity, it said.
"In the long run, Icra believes the implementation of the project could lead to increased cargo for the ports, however, several challenges remain given the vast scale of the project and significant funding resources and PPP participation required to make the targets a reality," it said.
Icra said the actual materialisation of the plans could take significant time given the time consuming legislative framework required for efficient collaboration between the central and state governments, it added.