Original: The Manchester Ship Canal was built in 1894 , in some sections by canalisation of the Rivers Irwell and Mersey , running 58 k from Salford to Eastham Locks on the tidal Mersey .
Simplified: The Manchester Ship Canal was created by the digging of canals in the rivers Irwell and Mersey for 36 m from Salford to the Mersey estuary .