Underwater Construction

Name: Underwater Construction
Author: SirDigby

Build underwater!

by SirDigbyv1.1.0vanilla-friendlyqolmultiplayer

4.5K

Downloads

50.8K

Views

November 6, 2025

Created

July 8, 2026

Updated

Description

Construct buildings while swimming and diving!

Along with allowing you to build underwater, this mod changes the character buoyancy so you sink slowly instead of floating, making it easier to stay underwater and build. This can be changed in the Mod Savegame Settings, however.

This mod pairs especially well with [Swift Swimming](https://ficsit.app/mod/Th3SwiftSwim).

![](https://raw.githubusercontent.com/mklierman/SatisfactoryMods/refs/heads/main/UnderwaterConstruction/Screenshots/1.png)

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Please report any issues <a href="https://discord.gg/WM5KT7pVu8">on my Discord server</a> 
<a href="https://ko-fi.com/sirdigbymodding">SirDigby's completely optional tip jar</a>

<a href="https://indifferentbroccoli.com/satisfactory-server-hosting?fpr=sirdigby"><img src="https://indifferentbroccoli.com/img/broccoli_shadow_square.png" width=80/></a>
Indifferent Broccoli provides the server I use to test Dedicated Server mod support, and I highly recommend them. If you're looking to <a href="https://indifferentbroccoli.com/satisfactory-server-hosting?fpr=sirdigby">host your own Satisfactory server</a> , try indifferent broccoli's 2-day free trial.

Versions

v1.1.0release

1.2K downloadsJune 6, 2026

v1.0.1release

3.2K downloadsNovember 6, 2025

v1.0.0release

33 downloadsNovember 6, 2025

All versions on ficsit.app →

How to Install Underwater Construction on Your Server

Order Satisfactory Server

Order a Satisfactory server with at least 4 GB RAM (6 GB recommended). For multiplayer: per 4 players.

Install Mod

Open the mod manager in the dashboard and search for "Underwater Construction". Installation dependencies are installed automatically.

Restart Server

Restart the server so the mod is loaded. Players need to have the mod installed locally as well.

Frequently Asked Questions

Underwater Construction not working after update – what to do?

After a Satisfactory update, mods need to be updated. Check ficsit.app whether Underwater Construction has been updated for the new game version. With Mado Hosting: open the mod manager and click "Update All". If the mod hasn't been updated yet, temporarily remove it so the server starts.

Underwater Construction causing crashes in multiplayer – solution

Most common cause: all players must have exactly the same mod version installed. Check server logs for "ModMismatch" or "Version Conflict". Ensure all players use Underwater Construction v1.1.0 and the same SML. With Mado Hosting, Satisfactory servers run with 6 GB RAM for stable multiplayer performance.

Is Underwater Construction compatible with other Satisfactory mods?

Underwater Construction uses the Satisfactory Mod Loader (SML). Generally, SML-based mods are cross-compatible, but mods modifying the same game systems can cause conflicts. Test new mod combinations on a backup save. The Mado dashboard automatically detects known conflicts and warns you.