Describe the sea ports of eastern India with reference to their features and importance.
The seaports of eastern India are described below:
(i) Paradip Port, Orissa: It specialises in the export of iron-ore.
(ii) Kolkata Port:
(a) It is an inland riverine port.
(b) It serves as a very large and rich hinterland of Ganga-Brahmaputra basin.
(c) It is a tidal port and, therefore, requires constant dredging of Hooghly.
(iii) Haldia Port: It was developed as subsiadiary port in order to relieve growing pressure on the Kolkata port.