The Tamil Nadu government is studying a ₹876.35-crore proposal to make a 7.2-km central stretch of the Buckingham Canal navigable, from Napier Bridge to the Adyar River via Greenways Road, with passenger boats, floating restaurants and cargo movement. The canal runs about 450 km along the east coast, 250 km in Andhra Pradesh and 200 km in Tamil Nadu. Built in 1806 by Basil Cochrane as Cochrane Canal, it was renamed in 1878 after the Duke of Buckingham and Chandos, then Governor of Madras. The North (316 km) and South (110 km) Buckingham Canals became part of National Waterway 4 in 2016.