Where Are UBOAT Save Files Located?
UBOAT saves patrols in a Saves folder with settings in a .ubt file beside it, all under Deep Water Studio.
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UBOAT keeps patrols in a Saves folder under Deep Water Studio in LocalLow, with a settings.ubt file sitting beside it for options. The .ubt extension is unique to the game, which makes the settings file easy to spot in backups.
Long patrols make manual backups more valuable here than in most sims. A corrupted mid-patrol save costs hours of careful crew management, so copy the UBOAT folder out before risky mod experiments or major version updates.
Where UBOAT stores this, by platform
C:\Users\[Username]\AppData\LocalLow\Deep Water Studio\UBOAT\Saves
Patrol saves here, settings.ubt one level up. Back up the parent UBOAT folder to include both.
~/.steam/steam/steamapps/compatdata/494840/pfx/drive_c/users/steamuser/AppData/LocalLow/Deep Water Studio/UBOAT/Saves
Proton prefix for Steam Deck and Linux desktops, app ID 494840. Same Saves plus settings.ubt layout inside.
Frequently asked questions
What is the settings.ubt file?
UBOAT's options file in its own format, sitting beside the Saves folder. Copy it with the saves when migrating or graphics and bindings reset.
Does UBOAT support Steam Cloud?
Yes, plus GOG Galaxy on that build. Cloud covers the save tree, but long patrols still deserve manual copies before updates.
Notice an outdated path? Let us know.