Ed Howard put a tremendous amount of time and work into making historically accurate bases and missions for the Pacific Thunder Campaign that he made into a stand-alone mod available at:
http://www.subsowespac.org/silent-hunter-4-mods.shtml
Yes, including Mios Woendi and numerous other bases. His mod is the "Guerrilla Submarines Spyron Mod" available on that page. Charts/maps are available for each patrol area and an XL spreadsheet listing the codes for each mission although I believe his mod is also a stand alone career.
There is a tool made by Kim Ronhof that allows you to change your patrol area, date, hull number etc and another tool that is patrol report generator from data from a save before returning to base.
You may want to look into Ed's mod - I really like it; I say I really like it because it is Ed's "Cycles mod" that we used for years converted into a stand-alone mod. You may want to study how he made it. Sounds like it holds a lot of answers you're looking for.
Happy Hunting!