A small suburban town with a huge container port and considerable light industry situated by the banks of the river Seine, some 7 miles (11 km) south of the centre of Rouen, at the junction of the D938, D3 and the D13 roads. The A13 autoroute passes through the southern section of the commune's territory.[citation needed]
Heraldry
The arms of Grand-Couronne are blazoned : Per fess gules and azure, a leopard Or and a boat Or on 3 bars wavy argent (waves) dimidiated with Per fess azure and gules, a crown Or and a demi toothed wheel argent issuant from the line of division.[citation needed]