 By 2015, several patrol boats were confined to port because of structural, mechanical, and corrosion issues.In response, the Department of Defence threatened to cancel DMS' maintenance contract based on the company's poor performance in maintaining the "Armidale"s (but did not go ahead due to the political repercussions from potentially losing local jobs).Defence and Serco (the parent company of DMS) later agreed to end the contract in 2017, with the Australian government to tender for a new in-service support contract during 2016.