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NauTec is a NeoForge magic mod for exploring the ocean depths, where players find new technologies that are both strong and dangerous.

NeoForgeClient and serverMIT LicenseOpen source1.21 – 1.21.1

What it does

A new aquatic journey begins at a prismarine crystal geode under a dark prismarine ruin. The ruin holds an Aquatic Catalyst, which generates the first power when it is filled with fuel such as kelp, and activating it needs a hopper and a Heart of the Sea. Once the catalyst runs, it can send a laser beam up to 15 blocks along a path.

Items are transformed by throwing them into the laser. Throwing iron under the beam turns it into Aquarine Steel, which opens up the mod's base material. The beams also raise the purity of crystal beams. Players who finish the early game can explore the rest of the mod with the help of its guide book, and the Aquarine Steel starts the machines, such as a mixer, used for deep-sea chemistry.

NauTec runs on client and server, so the server and every player need it. Requires Curios API, Modonomicon and Just Enough Items (JEI). Files are published for NeoForge 1.21 and 1.21.1, and the latest file is 0.3.2 for 1.21.1, released 2025-12-30. The mod is released under the MIT License and is open source.

Key features

  1. Aquatic Catalyst power

    The catalyst ruin generates power from kelp or other fuel, and the power can drive a laser beam over 15 blocks.

  2. Laser item transformation

    Items dropped into the laser are transformed, so iron becomes Aquarine Steel.

  3. Diving suit

    A diving suit removes the fog effect that vanilla oceans apply, so deeper water stays visible.

  4. Deep-sea machines

    Aquarine Steel is the material for machines such as a mixer, plus a station that collects salt water in bulk for augmentations.

Compatibility

Latest build for each game version and loader.

1.21.10.3.2
1.210.1.8
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 3

ModonomiconModonomicon is an in-game documentation mod inspired by Thaumcraft's Thaumonomicon and Patchouli, and aims to provide the best of both, with some unique flavors.
Required
Just Enough Items (JEI)View Items and Recipes
Required
Curios APIA flexible and expandable accessory/equipment API for users and developers.
Required

How it compares

Full comparison

Beyond the Ocean is a NeoForge mod for 1.21.1 under All rights reserved and is not open source. Enlivened End is a NeoForge mod for 1.21.1 under the MIT License and is open source. Both run on client and server, like NauTec.

ModLoadersGame versionsEnvironmentUpdated
NauTecNeoForge1.21 – 1.21.1Client and server2025-12-30
Beyond the OceanNeoForge1.21.1Client and server2026-06-21
Enlivened EndNeoForge1.21.1Client and server2026-09-19

Questions

Does NauTec need Curios API and Modonomicon?

Yes. Both are required dependencies, alongside Just Enough Items (JEI), which the author recommends for finding recipes.

Does NauTec have to be installed on the server?

Yes. Servers that run it need every player to install it too.

Which game versions does NauTec support?

NauTec has files for 1.21 and 1.21.1, and the latest NeoForge file is 0.3.2 for 1.21.1.

How does the Aquatic Catalyst get powered?

The catalyst is filled with fuel such as kelp, and a hopper and a Heart of the Sea activate it.

In the catalog

NauTec is one of 7,216 Magic mods on ModsFinder, and one of 2,992 Magic mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

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What the author says

Requires Curios API and Modonomicon but Just Enough Items and Jade are HIGHLY recommended Nautec is a mod about exploring the depths of the ocean, discovering new technologies both powerful and dangerous.
ReclipseTheOne, on the Modrinth page

Official listing

Owner
ReclipseTheOne
Published
2024-11-10
Updated on Modrinth
2025-12-30
Facts verified
2026-10-15

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