What is "kirki"

The Kirki was a 210 foot long Greek-registered oil tanker which caught fire on 21 July 1991, 18 miles west of the fishing town of Cervantes, Western Australia. The fire resulted in an oil spill initially estimated at 2.9 million gallons. At the time it was the worst oil spill to have occurred in Australian waters. The vessel remained afloat and traveled north to the waters off Cape Preston where oil remaining in the vessel was to be recovered.