In November 2004 Geelong took the world title when 43 divers launched off St Leonards Pier with an iron and crumpled shirt in hand.
The city's divers repeated that the following year, when 70 underwater fans competed in the aquatic ironing event.
They still hold that record, much to the disdain of arch rivals New Zealand, according to previous event organiser Ray Hill, of Bay City Scuba.
The world record attempt will be at St Leonards Pier on March 30.
For information contact cdazzopardi@optusnet.com.au.