Three people including a child have died in a single vehicle crash on the our South Coast.

Superintendent Luke Unsworth from Fire and Rescue New South Wales says crews were called to reports a car had travelled off the Princes Highway at Lake Tabourie south of Ulladulla.

"Just before 4.30 this morning we were notified of a single vehicle accident at Lake Tabourie."

"Immediately fire fighters from our Ulladulla Fire Station raced to the scene along with the senior officer of the police." Mr Unsworth said.

The female driver, a man and a young child died at the scene.

A male passenger has been airlifted to hospital.

While in Sydney's south a female passenger has died following a single-vehicle crash in Ramsgate yesterday.

The 46 year old died in hospital this morning.

Photos: News file