[2026.1] Type IX Flooding Fix

Take one leak on a Type IX and a compartment floods in seconds - even at periscope depth, where flooding should be a slow problem you can fight. That's not your damage control. Every crew compartment on the Type IX was shipped with the same unconfigured default water volume, so any room fills 4-8x faster than the equivalent room on a Type VII. This mod gives them their real volumes back. The bug Each compartment's water volume tagged "Volume in cubic meters" in the game code, default 10. The flooding sim fills a breached room up to that capacity, so fill time = capacity / inflow. From the game's files the values are the following: Type VIIC rooms carry real per-room volumes: 9 / 22 / 39 / 9 / 69 / 78 / 56 / 59 m3. Type IXC rooms are all 10 m3 - every single one, seem to be forgotten by the developers, unfortunately. What the fix does Gives each Type IX room a realistic volume and rescales its height-to-volume curve so the water level still displays correctly (raising the cap alone would draw a room "full" at a sixth of the way up). Default volumes are baselined on the Type VIIC's own real capacities, adjusted for the Type IX's longer hull and its extra rooms (Officers Room, Crew Quarters, Electric Motor Room). Total ~343 m3 - close to the VIIC's ~341, because the two pressure hulls have nearly the same internal volume; the IX just splits it across more rooms. A bow leak now fills ~7x slower, a stern leak ~6x - damage control finally has time to work. Compatibility DLC NEEDED: This mod doesn't work without Type IX: Distant Coasts DLC. Save-safe: This mod doesn't affect your save files. Add or remove it any time. DeepLeaks: compatible. The two mods patch completely different methods, and DeepLeaks only reads compartment capacity for its waterflow model - so the corrected Type IX volumes feed straight into it and make its flooding more realistic on the Type IX, rather than conflicting. Tune it if needed Ships with the measured-from-VIIC defaults - most players never to