CurseForge · Minecraft mod
Unnamed Sea
Additional structures for the sea and beach biomes, focusing on an immersive expansion for the vanilla game.
Quick answer
Which Unnamed Sea release should I use?
Unnamed Sea [1.19 - 1.21.11] - v1.2.5 targets 1.21, 1.19.3, 1.20.2 with Fabric, Forge, NeoForge. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. All 1 required mods have matching files.
Where it goes
Is Unnamed Sea required on the client, server, or both?
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
The source does not explicitly classify this release as client-only or server-only.
What else does Unnamed Sea [1.19 - 1.21.11] - v1.2.5 need?
[1.19 - 1.21.11] - v1.2.5. Change the file and its required mods may change too.
Install Fabric API 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 Unnamed Sea without breaking your instance.
Built for Unnamed Sea [1.19 - 1.21.11] - v1.2.5. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use [1.19 - 1.21.11] - v1.2.5. It targets 1.21, 1.19.3, 1.20.2 with Fabric, Forge, NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API 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 it belongs on the client. The project page does not say whether it belongs on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside [1.19 - 1.21.11] - v1.2.5. It opens that exact file at the source.
About this project
What does Unnamed Sea add?

🏖️ About
Looking to spice up your world generation? You’ve come to the right place!
Unnamed Sea expands your world with unique, handcrafted structures that enrich the atmosphere of the ocean and beach biomes. Some are built for adventure and conquest, while others exist purely to enhance the visual experience and deepen your sense of immersion.
For more details, refer to the image gallery, the wiki below, or the following quick summary:
- 4 structure types / 16 total variants
- Island (3 variants)
- Lighthouse (2 variants)
- Raft (9 variants)
- Ship (2 variants)
🌐 Wiki
Additional information can be found on the Modrinth page of this project (here).
📬 Remarks
Please keep in mind that at any given time vast amounts of the mod may be edited or completely overhauled! These changes should not, but may leave existing worlds on older versions corrupted. Creating backups before updating to a new version is advised!
I want to reiterate that this is simply a passion project. It may occur that for longer periods no updates or bug fixes are being developed/released simply because I do not want to.
Project description from CurseForge.
Pick your setup
Unnamed Sea by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
4 loader builds1.21.10
4 loader builds1.21.9
4 loader builds1.21.8
4 loader builds1.21.7
4 loader builds1.21.6
4 loader builds1.21.5
4 loader builds1.21.4
4 loader builds1.21.3
4 loader builds1.21.2
4 loader builds1.21.1
4 loader builds1.21
4 loader buildsShowing the newest 12 of 24 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Unnamed Sea versions and loaders
[1.19 - 1.21.11] - v1.2.5
u_sea-1.2.5+mc1.19-1.21.11.jar
1 Feb 2026
[1.19 - 1.21.10] - v1.2.4
u_sea-1.2.4+mc1.19-1.21.10.jar
19 Oct 2025
[1.19 - 1.21.8] - v1.2.3
u_sea-1.2.3+mc1.19-1.21.8.jar
20 Jul 2025
[1.19 - 1.21.7] - v1.2.2
u_sea-1.2.2+mc1.19-1.21.7.jar
2 Jul 2025
[1.19 - 1.21.6] - v1.2.1
u_sea-1.2.1+mc1.19-1.21.6.jar
24 Jun 2025
[1.19 - 1.21.5] - v1.2.0
u_sea-1.2.0+mc1.19-1.21.5.jar
11 Jun 2025
[1.19 - 1.21.5] - v1.1.0
u_sea-1.1.0+mc1.19-1.21.5.jar
16 May 2025
[1.21 - 1.21.1] - v1.0.0
u_sea-1.0.0+mc1.21.jar
1 Oct 2024
Looking for an older file? The official CurseForge project page is in Resources.