The Esso Hibernia under construction, Wallsend shipyard, 1970.Northumbria and her sister ship Hibernia were 250,000 ton oil super-tankers and the largest thing ever seen on the River Tyne. Whilst they were being built they dominated the skyline of Wallsend. Because the launch of Esso Northumbria was such a big event, tickets were issued for access to the shipyard and families of Swan Hunter’s employees had access to a particular area.