It’s insane how many ships that he served on were renamed several times, not only after their commission dates, but ships that were purchased from the British Navy and renamed after for the RAN, and then renamed several times again even after the original ships were decommissioned/sunk/scrapped 
My Grandfather also served on all of these vessels listed below……. but yet again, trying to research the history of his service records that are applicable to the actual ship that he was on at the time is an absolute headfck 
Just like the example above where his service records are documented as being on the Cerberus on those dates…… the original ship was sunk in the harbour by then, plus support ships were also given the same name….along with Naval Complexes being named the same as well!
His service records I have in my possession, and can’t be denied as being “historically incorrect” , as they are written on paper with old Ink Well Pens that details every conceivable information that had to be documented according to the military records of that time.
Fortunately it does have some advantages such as the Cerberus history, where at least can use those records to accurately identify what ship was which, no matter how many times it had been renamed…… or other ships that were renamed over their original production history.
Anyrate…… here’s a list of only the Warships that he served on, in order from his first joining the RAN until his military release………which doesn’t include the rest of his life in the Merchant Navy between conflicts or his career in peacetime afterwards.
Cerberus.
Melbourne.
Success.
Platypus.
Australia.
Canberra.
Penguin.
Victory.
Voyager.
It’s extremely confusing that many of these ships names don’t actually exist in history searches as many were renamed from other vessels aquired from other countries, which was common practice of how the RAN continually renamed ships for god knows what reasons at the time
This historical fact lines up with the service documents of my grandfather at those specific times…… and the renaming of these ships, but it certainly makes it very difficult to research 
EG: The “Platypus” sailed out on the 15th August 1929 and was for some unknown reason renamed as the “Penguin” when it returned the very next day……. under which it served as the “Penguin” until 1941 and simply returned back to the “Platypus” once again!
So this is just an example of how confusing it is researching his service history, where it shows both the Platypus and Penguin, even though they are exactly the same ship!
The same with the Cerberus, where the original was scrapped/sunk before he joined the Navy, yet records show that he was still on whatever ship the RAN had renamed the “Cerberus” in 1938!
So his records stating his service on the “Platypus”, but then stating as serving on a “different” vessel named the “Penguin” is misleading in the fact that he was still serving on exactly the same ship, but they decided to rename it and record it in his military documents as being “transferred” to another vessel……… but in reality, he was still sitting on the same ship!
So if I told someone that my grandfather was on the Penguin during the Japanese attack on Darwin, they would reply “that ship wasn’t even there!”…… even though in reality it was…… but just under a different name once again!
Extremely ironic that the Platypus spent its life fighting the Japanese, yet in 1958 was sold to the Japanese for scrap!
This is an image of only a single page/record that entails his very first placements in his long Naval Career that relates to this particular time period and the ships being discussed in this particular context.
We have all of the original paperwork in our possession, but this is only but a snapshot of what we could find online.
His service in the RAN and Merchant Navy continued on with several other Warships, and finished in 1948 when my Grandfather Robert became a dad to my Father Robert and is when he decided to “get a real job” by starting his own Electrical Contractor Business that both him and my father ran until this Robert was born!
Also shows what I have commented before about the fact that every first born male in our family is named Robert…. which is traceable all the way back to Robert the Bruce in Scotland and beyond…. and is still current to our family tree until this day, even here as my Grandfather, my father, my name and the name of my own son…… they are all Robert’s!
The tradition is to go by a middle given name in daily life though, hence my grandfather being known as Roy, my father by his middle name and my son as well……. except me, I’m simply sticking with Bob! 
The history of “Robert” is prolific though many centuries and still going, which I think that would be mind blowing for them to imagine way back in the year 1060 that this red neck would still be following family tradition and naming his own son the same in the year 2006!
……. and believe it or not going back through this history, my younger brothers name is David!
edit, I guess I should read the link. So it’s yanks copying the metallurgy but also copying the Wiki page on their home page. Throw a few choice pics in and bam, 90 grand for sure 