The Life of Type Extension (LOTE) of the Collins Class submarine fleet will provide the nation with world-class submarine capability into the 2040s and beyond.

The Collins Class are internationally regarded among the best conventional submarines in the world. ASC will continue to deliver its current level of world-class boat availability to the Royal Australian Navy throughout the implementation of the LOTE program.

During the program, ASC will replace the propulsion systems, diesel engines, generators, and the power conversion and distribution systems. There will be an optronics upgrade, a planned cooling system upgrade, and ASC will carry out a range of hull assessments. ASC will integrate the new equipment into the existing command and control system.

The LOTE will be implemented on all six submarines in the Collins Class fleet.

LOTE is currently in the systems design phase and ASC is working closely with the Royal Australian Navy, the Capability Acquisition and Sustainment Group (CASG), Australian suppliers and international partners to deliver the Royal Australian Navy’s specific requirements.

ASC is on schedule for the First of Class implementation with HMAS Farncomb, in 2026.