[2026.1] Living Depths

The ocean floor in UBOAT has always been a flat, empty surface. Drop to periscope depth, look down – nothing.

This mod brings the seabed to life.

The North Atlantic floor in 1940 was anything but empty: glacial boulder fields, seagrass meadows, weed, shellfish and fish drifting through the gloom. Living Depths fills it all in, streaming quietly around your boat as you move.

• Rocks & geology
• Plant life
• Benthic life
• Fish

Placement is procedural, so no two stretches of seabed look the same.

Save compatibility (v1.3+): saves created with v1.3 version of this mod or later are safe to load even after removing (disabling) the mod – the mod no longer writes anything into your save file. If you saved with v1.0–1.2 and then removed the mod, your save cannot be loaded without it; re-enable the mod and keep playing, or start a new campaign without it. If you can’t re-enable the mod and are stuck on a broken save, share it via Google Drive in the comments and I’ll fix it manually.

On first launch the mod creates living-depths-config.json in %AppData%..LocalLowDeep Water StudioUBOAT. Open it with any text editor and set density to one of:

• low – lightest. Use this if the seabed is slow to appear or you’re on a weaker PC
• medium – the default; balanced
• high – the richest, most crowded seabed (best on a strong PC)

Save the file and restart the game to apply. Note: the mod only places its rocks and plants where the game’s own ocean floor has loaded – so if the floor ever looks empty or pops in late, lowering the density helps the game keep up.

(Reporting a bug? Set verboseLogging to true in that file for detailed logs.)

Living Depths touches a lot of the seabed at once. If something looks wrong, floats, flickers, or hurts your framerate, please report it in the comments or the Bug Reports discussion – and mention where it happened. It helps enormously.

The plants here are hand-coded billboards. If you own quality 3D models of marine flora – weeds, kelp, soft corals, sponges – and would like to see them in the mod, get in touch. Preferred format: FBX (or OBJ) with PBR textures (albedo + normal map); any real-world scale is fine.

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If you like my mods, you can support me here: https://dalink.to/kugler