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Cosmonautics: Deep Air

by dwasint

Cosmonautics: Deep Air lets entities breathe inside sealed, oxygenated Sable sublevels that sit beneath the sea.

NeoForgeClient and serverMIT LicenseOpen source1.21.1 – 1.21.11

What it does

The mod is a compatibility bridge between Create and the Sable and Deep Seas content it builds on. Entities can breathe normally inside a sealed, unbreached oxygenated sublevel, and the mod also handles the Create-side wiring that connects the two. It needs Create Deep Seas installed alongside it. Files are published for NeoForge only, for 1.21.1 – 1.21.11, under the MIT License, and the code is open source.

Key features

  1. Breathable sealed sublevels

    Entities can breathe normally inside a sealed, unbreached oxygenated Sable sublevel.

  2. Create integration

    The mod bridges Create with Sable content, so Create machinery can take part in deep-sea sublevel builds.

  3. Deep Seas support

    Create Deep Seas provides the underwater setting the mod is built around, and it must be present.

Compatibility

Latest build for each game version and loader.

1.21.x11 of 11 versions with builds
1.21.111.0.1
1.21.101.0.1
1.21.91.0.1
1.21.81.0.1
1.21.71.0.1
1.21.61.0.1
1.21.51.0.1
1.21.41.0.1
1.21.31.0.1
1.21.21.0.1
1.21.11.0.2
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 1

Create Deep SeasSubmarine and boat in Create Aeronautics!
Required

How it compares

Full comparison

More Red Sable Wire Fix is another NeoForge option for 1.21.1, open source under the MIT License and used on client and server. Sable: Pushable is also for NeoForge 1.21.1, but its license is All rights reserved and its source is not open.

ModLoadersGame versionsEnvironmentUpdated
Cosmonautics: Deep AirNeoForge1.21.1 – 1.21.11Client and server2026-06-24
More Red Sable Wire FixNeoForge1.21.1Client and server2026-05-21
Sable: PushableNeoForge1.21.1Client and server2026-07-29

Questions

Does Cosmonautics: Deep Air need Create Deep Seas?

Yes. Create Deep Seas is a required dependency and must be installed alongside the mod on NeoForge.

Does the mod have to be installed on both sides?

Yes. Installation covers the server and each player's game.

Which game versions are supported?

Files cover 1.21.1 – 1.21.11, with 1.0.1 for 1.21.11 as the latest NeoForge file.

In the catalog

Cosmonautics: Deep Air is one of 8,499 Technology mods on ModsFinder, and one of 3,557 Technology mods for NeoForge. 19,862 mods support Minecraft 1.21.11.

Similar mods

What the author says

There is 1 major caveat to gravity, and that is atleast 1 room in your ship will need air due to deep sea memory cleanup. Create Create Aeronautics Sable Cosmonautics Create: Deep Sea
dwasint, on the Modrinth page

Official listing

Owner
dwasint
Published
2026-06-23
Updated on Modrinth
2026-06-24
Facts verified
2026-10-15

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