[1] It is a small town located near Gravelly Beach on the western side of the Tamar River, north of Launceston.

Named after Blackwall on the River Thames in England, it was likewise a noted shipbuilding centre.

The second-largest ship built in Tasmania during the 19th century, the 547-ton barque Harpley, was launched here in 1847.

[2] Lanena Post Office opened on 1 April 1911, was renamed Blackwall in 1968, and closed in 1975.

[4] Route C728 (Gravelly Beach Road) passes through from south-west to north-east.