'Andoo Comanche' and 'LawConnect' are locked in a tight battle for line honours in the 78th edition of the Sydney to Hobart yacht race.
The two super maxis are just over an hour away from the finish line.
Both yachts are expected to arrive in Hobart around 8am eastern daylight time.
Wild weather has seen 11 yachts retire from the race.
Experts predict the rough conditions could force the retirement of dozens of other contenders who are yet to clear the Bass Strait.