For two decades it was the Edinburgh vessel that ran like clockwork - despite repeatedly losing its cargo at sea.
Aptly taking its name from the infamous warning call from the days when the contents of Edinburgh's chamber pots would be ejected from open windows, the MV Gardyloo made thousands of voyages out to the North Sea to dispose of the capital's sewage.
It's hard to imagine now, but, up until fairly recently, the practice of dumping vast quantities of our poo and pee at sea was perfectly legal in spite of the obvious environmental hazard it posed to marine life.
