Guinness had a  fleet of ten barges which commenced working on the river in 1927. They were all named after a Dublin locality. The other boats were ‘Farmleigh’, ‘Knockmaroon’, ‘Chapelizod’, ‘Fairyhouse’, ‘Clonsilla’, ‘Killiney’, ‘Sandyford’, ‘Howth’ and ‘Seapoint’, delivered in succession up to 1931. The end of the Emergency during World War II saw the return of plentiful supplies of fuel for the new fleet of Guinness trucks which took over the work of the barges. The fleet was gradually decommissioned and sold off. Some of the barges (including ‘Chapelizod’ and ‘Castleknock’) were later acquired by Scots of Toomebridge for addition to their fleet of sand barges working on Lough Neagh. ‘Castleknock’ was destroyed by an explosion during the 1970s. 

More information about the history of the Guinness barges can be found at the website of the Heritage Boat Association. 

http://heritageboatassociation.ie/cms/index.php...

Source the Capuchin Archives Ireland.

Guinness Barge ‘Castleknock’ on the River Liffey

Guinness Wharf Victoria Quay 1950's