The City of York , City of Port Elizabeth, carried 120 first class passengers, ( no 2nd or 3rd class), in the engine room was a large sewage
tank for port use, once at sea this was pumped out with a anticlog pump, this pump was always getting clogged up, alongside the pump
was the engineers favourite tool ( a large hammer), So when the pump got clogged up you gave it a good whack with the hammer and
away it chugged pumping the munchy crunchys overboard.