In 2009, the Australian government recognized the need to replace its aging Collins-class submarines. What followed has been a mess of indecision, changing plans, and squandered opportunities.

HMAS Farncomb had been due to be retired this year, but is now expected to operate until about 2036

The program will keep the submarines in service to the 2040s, 20 years longer than originally planned.

In 2009, the Australian government recognized the need to replace its aging Collins-class submarines. What followed has been a mess of indecision, changing plans, and squandered…