Bandicoot and Wallaroo have not been operated as minesweepers since 2010 .
Bandicoot and Wallaroo have not been were retained until 2014 to provide berthing support for nuclear - powered warships .
Bandicoot and Wallaroo have not been operated as minesweepers since 2010 , but were retained until 2014 to provide berthing support for nuclear - powered warships .