The Abbott government has appointed former Liberal MP Sophie Mirabella to the board of the government-owned naval shipbuilding firm ASC Pty Ltd.

Mrs Mirabella, who lost her Victorian seat of Indi at the September election despite the landslide Coalition victory, was one of three new appointments to the board announced on Tuesday.

Former Liberal MP Sophie Mirabella. Credit:Mal Fairclough

ASC Pty Ltd, formerly the Australian Submarine Corporation, is the government-owned firm responsible for troubled major projects including the Air Warfare Destroyer and Collins Class submarine.