When Dungeons Arise: Seven Seas
by aureljz
Seven Seas adds ships and oceanic dungeons to worlds, so players can explore, loot and raid vessels lost on the open water.
What it does
The mod generates complex ships and other oceanic dungeons in the world. Structures are placed across the sea, following the same design ideas, vanilla customization and datapack options. Players reach the wrecks by exploring further and loading new chunks.
Configuration is done through datapacks, so datapacks are required to change the generated content. Public templates are planned but not yet released. The mod requires a required dependency, and a compatibility add-on exists for sparse structures. Installation on Fabric, Forge and NeoForge is covered by 18 release versions, 1.20 – 1.21.10.
Seven Seas is server-side only, so only the server needs it and players join without installing it. The mod is published under All rights reserved and is not open source.
Key features
Oceanic ship structures
Complex ships are generated on the water, adding vessels to explore away from land structures.
Sea dungeons
Other dungeons placed in the ocean give players further points to explore and loot.
Datapack configuration
Structure placement and vanilla customization are set through datapacks rather than a config screen.
Parent mod design
The structures follow the design ideas of the mod this one expands, so the two feel consistent together.
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
1.20.x7 of 7 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Required by 2 mods
Use cases
Exploring the ocean
Players who sail away from land can find ships and dungeons that normally do not appear near the coast.
Who it’s for: Players who want more structures on the open sea, and server owners who configure generation through datapacks.
How it compares
Integrated Seven Seas is a Forge and NeoForge option that requires a server, with files for 1.20 – 1.21.1 and All rights reserved as its license. Structures Loot Tweak is a client and server mod under the MIT License, published for 1.20.1 – 1.21.1 across Fabric, Forge and NeoForge, and it adjusts loot rather than adding structures.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| When Dungeons Arise: Seven Seas | Fabric, Forge and NeoForge | 1.20 – 1.21.10 | Server-side only | 2025-10-24 |
| Integrated Seven Seas | Forge and NeoForge | 1.20 – 1.21.1 | Server required, client optional | 2026-06-06 |
| Structures Loot Tweak | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-10-12 |
Questions
Does Seven Seas need a parent structures mod?
Do players need to install Seven Seas?
How are the structures configured?
Which loaders does Seven Seas support?
In the catalog
When Dungeons Arise: Seven Seas is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 15,569 mods support Minecraft 1.21.10.
More from aureljz
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What the author says
Explore, loot and ravage wandering vessels lost in the seven seas. Seven Seas is an expansion of the structures mod When Dungeons Arise. While the latter focuses on massive land structures, Seven Seas takes this further by adding complex ships and other oceanic dungeons, while following similar design ideas, vanilla…
Official listing
- Modrinth page
- modrinth.com/mod/when-dungeons-arise-seven-seas
- Owner
- aureljz
- Published
- 2024-01-19
- Updated on Modrinth
- 2025-10-24
- Facts verified
- 2026-10-15