Bren light machine gun
The ship was still undergoing sea trials when it was requisitioned by the Royal Australian Navy in October 1940, commissioning as HMAS "Vigilant" on 12 November 1940. It was classed as an auxiliary patrol vessel. It was initially equipped with a 3-pounder QF gun but this was replaced with a 20 mm Oerlikon. As well as the mounted gun, it carried a variety of light arms including a Bren light machine gun.