This project is acquiring a Heavyweight Torpedo (HWT) for the Collins Class submarine to replace the United States Navy's (USN) Mk 48 Mod 4 HWT currently in service with the Royal Australian Navy (RAN). The torpedo is being supplied by the United States (US) Government under a Memorandum of Understanding (MOU), with work performed by Raytheon US and the US Naval Undersea Warfare Center (NUWC). The project is also acquiring associated logistic support, weapon system interface equipment, and operational support and test equipment. ASC Pty Ltd (ASC) is undertaking integration to the Collins Class submarine platform.