One day and six hours is the new fastest sail-time between Sydney and Hobart.

Sydney sailor Sean Langman set out just before 11:00am AEDT yesterday to break the standing record of one day, 18 hours.

Cruising at up to 38 knots overnight, Langman and his crew in the trimaran Team Australia sailed into Storm Bay about 3:00pm AEDT today, crossing the Hobart finish line just before 5:00pm.

He says the achievement has not quite sunk in.

"At the moment I'm just a little bit shell-shocked," he said.

"I've been wanting to do this since I turned about 15 or so, so yeah - a long time coming."

Official timekeeper Barry Shepherd says the previous record had stood for 14 years.

"To take so much off it - that's pretty special," he said.

Langman is already planning his next challenge: completing the journey in under 24 hours.