The "Porpoise class" is assigned to SubPac ( Pearl Harbor ) from Dec 41 to Nov 44, and was assigned to Task Force 3/51/71 ( Manila, Surabaya, Fremantle ) in RSRDC. On Aug 30 1942 all "Porpoise class" subs were transferred to SubPac and on that date the current operating base for SubPac was Midway. There were no "Porpoise class" subs assigned to Task Force 42/72 ( Brisbane )

Well your probably right, I started with an S boat and was offered a 'new boat' and accepted. But I was still departing from Freemantle :hmm:

I said Brisbane in my OP but that was a mistake it was actually Freemantle. :doh: