I finally returned from my 3rd patrol in my career. It was a very long one: i leaved Midway on 23 August 1942 and returned back on 18 October 1942 sinking 30000 tons of enemy merchant shipping. Of course i re-fueled and re-armed my submarine few times. I fulfilled 1 main objective and 3 others received from high command. For my achievements i received the Navy Cross.
However, i received only about 2000 renown points - is that normal in RSRDC?

I am playing on 100% difficulty level. I am asking, because i want to recruit new crew member with special ability which costs 3000 renown. Is there possible to accumulate renown points through various patrols or this won't sum up?
How can i check the ratings of my finished patrols? To be promoted, the player need to finish certain numbers of patrols on certain ratings (i.e Good).
I noticed also, that some enemy merchant ships were armed, so engaging them on surface was dangerous - does this feature comes with RSRDC mod or is already present in stock game?
Thank You in advance for response.