Basically turn your game into SH5:TWOS overhaul with realism and tools.

Manual aiming
-Speed decimals
-course line+
-Disable lock on
-realistic UZO sight
-Disabled stadimeter
-TDC target speed dial+ fix
-das book
-attack disc remastered (the tool you mentioned, mod has PDF link for instructions and practice examples)
-real navigation
-no spoilers
-enhanced identification book

Increased difficulty
-no spoilers
-u-boote heraus!
-deep leaks
-projekt bifrost
-More accurate uboat characteristics

Immersion and flavor
-Officer crew
-Device energy management
-bigger crew limit
-casual crew
-realistic light modes
-breathe easier
-1940s shirt textures
-better orchestra
-all my liberties
-device maintenance
-realistic uniforms
-Authentic goods
-realistic hydrophone
-grey wolves texture pack
-historical flag and Identification booklet
-Accurate Aircraft
-ctbbs maps
-kriegstagebuch
-historical graphics pack
-world war radio
-Sounds of War
-No auto-alarm

Quality of life
-realistic ammo capacity (there are two, I cant get rid of the older one, just get the newest one)
-no more cooks
-leave port button
-better time compression
-historical weight adjust
-stop buzzing on gear change
-more accurate periscope sights
-crash dive on aircraft
-highest crew priority wins
-tonnage sunk progress
-turn on pump
-turn on compressor
-removed deck gun boost
-kitchen capacity adjust
-rudimentary sound enhancement
-officer roles management qol
-AZ dud chance fix
-more accurate bearing markers
-sleeping officer follower fix
-skipper mode control enabler
-objective percentage
-silent gyrocompass and dive planes
-GHG 360
-distance in meters

The typed out list isnt up-to-date, however the collection itself is. Had to remove a few mods that were either unstable or bricked saves. As of 10/26/2025 I'm currently in a save that has had minor bugs such as helmsman station unmanned over and over (fixed by docking), AI not see me if I reload a save while in game (fixed by loading a save from main menu), and a single crash to desktop over hundreds of hours. Theres also a minor bug where an officer will spam "I'm tired" lines endlessly (fixed by reloading save). These are all very far and few between. I would discourage save scumming, it seems to have an effect on the game. There is a degree of perpetual memory of some sort, this can be tested in game by torpedo'ing a ship, and then reloading a save moments before the torpedo hit, you can still see a plume even though its in travel. My theory is save scumming in U-boat may not corrupt the save data, but may definitely increase the chances of corrupting data upon loading large scenes over and over, such as a convoy. I'm not a programmer dont shoot me if I'm way off.