Marmagao Port is located at the mouth of the Zuvari-estuary in Goa. It is an important iron ore exporting seaport. It is connected to Karnataka via Konkan Railways.
Dampier-Hodges line is an imaginary line drawn in 1829-1830 to mark the northern boundary of Sundarbans delta. It passes through 24 Parganas South and North districts of West Bengal.