CurseForge · Minecraft mod
NauTec
A magitech mod centered around the deep abyss of the oceans. Augment your player with various upgrades or transfer huge amounts of power using lasers
Quick answer
Which NauTec release should I use?
nautec-1.21.1-NeoForge-0.4.1.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 2 required mods have matching files.
Where it goes
Is NauTec required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does nautec-1.21.1-NeoForge-0.4.1.jar need?
nautec-1.21.1-NeoForge-0.4.1.jar. Change the file and its required mods may change too.
Install Curios API, Modonomicon first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add NauTec without breaking your instance.
Built for nautec-1.21.1-NeoForge-0.4.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use nautec-1.21.1-NeoForge-0.4.1.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Curios API, Modonomicon first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside nautec-1.21.1-NeoForge-0.4.1.jar. It opens that exact file at the source.
About this project
What does NauTec add?
Nautec is a mod about exploring the depths of the ocean, discovering new technologies both powerful and dangerous. To begin your aquatic journey you will have to find a prismarine crystal geode, located underneath a dark prismarine ruin. This ruin also contains an Aquatic Catalyst that you can use to generate your first power.


Due to the oceans being deeper than in vanilla minecraft it is highly recommended to craft a diving suit which also removes the underwater fog effect.


After filling the Catalyst with a fuel like primarine(requires a hopper) and activating it using a Heart of the sea, it will generate power and send a laser beam to any block in its way with a range of 15 blocks.

By shooting a beam into the crystal the beams purity will increase, allowing you to perform item transformtation using the laser. Item transformation is done by throwing an item in a laser.
Be careful tho, they can burn you!

Throwing iron under a laser will transform it into Aquarine Steel, therefore unlocking the base material for the mod.
Congrats! You have completed the pre-early game and are now able to explore the mod on your own or with the help of the guide book. Don't forget to use JEI either!

Now that you have unlocked Aquarine Steel you can start building machines like the mixer to dive into deepsea chemistry, build a deep sea drain to accumulate tons of buckets of Salt Water and work towards building an augmentation station to augment your body with various
Project description from CurseForge.
Pick your setup
NauTec by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.21
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
NauTec versions and loaders
nautec-1.21.1-NeoForge-0.4.1.jar
13 May 2026
nautec-1.21.1-NeoForge-0.4.0.jar
8 May 2026
nautec-1.21.1-NeoForge-0.3.2.jar
30 Oct 2025
nautec-1.21.1-NeoForge-0.3.0.jar
22 Jun 2025
nautec-0.2.9.jar
18 May 2025
nautec-0.2.8e.jar
12 May 2025
nautec-0.2.8d.jar
8 Mar 2025
nautec-0.2.8.1c.jar
nautec-0.2.8.jar
3 Mar 2025
nautec-0.2.8.1b.jar
1 Mar 2025
nautec-0.2.8.1.jar
nautec-0.2.7.1.jar
28 Feb 2025
nautec-1.21.1-NeoForge-0.2.8.jar
28 Feb 2025
nautec-0.2.7.jar
27 Feb 2025
Looking for an older file? The official CurseForge project page is in Resources.
