Nah, it's definitely a glitch with harbor traffic - there are a lot of positions for generic ships to spawn in friendly ports, even in RSRDC, and it generically spawned two big ones next to each other like that (I'm guessing it was designed more for destroyer-sized ships). There's always a glut of these cruisers in Australia though since there aren't a lot of RAN ships on the in-game roster, so the game doesn't have many to choose from. Kind of doubt that Lurker would've intentionally done something like that, though who knows! Still looks funny - and it happened again on my next patrol too.