This has been a very interesting and informative discussion on historical defence installations around Australia. I work at Albany History Collection (formerly Albany Local Studies) and have a close working relationship with "The Forts" as The Princess Royal Forts are known as. I delve into their archives regularly to assist others, and once an 'old timer' asked me for info on Fort Scratchely - this was the first time I'd heard it referred to as this. Julia Mitchell Albany, WA.