[Deja Vu]

Could you elaborate more on how your character would had risen through the ranks of the Imperial Navy? As well as how they would have started too.

If possible it might be a better idea to start as a lower rank in the navy and then through an interview with the current Sigrogana guard commander you be given the rank and duties befitting a captain.

If you already had the ship in the first place and were already roleplaying as a captain you might want to opt to being a licensed privateer instead which you don't really need GM approval for.

I have already RP'd in this manner before guard reworks took effect, but I'm more than happy to retcon such as privateer for the sake of consistency! In the mean time, I will list her as a rather patriotic privateer, who merely hates PAPERWORK. But will attempt to have her interviewed to see if she could apply for such duties and rank.
Thank you very much!
As for the first question, it would have primarily through pirate hunting and guarding merchant vessels. But this is something that could be done as a privateer as well, so I'm not that picky!