CurseForge · Minecraft mod
Whaleborne
Adds a new hullback mob and pirate ship mechanics
Quick answer
Which Whaleborne release should I use?
whaleborne-1.21.1-1.2.5.jar targets 1.21.1 with Forge, NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Whaleborne 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 whaleborne-1.21.1-1.2.5.jar need?
whaleborne-1.21.1-1.2.5.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Whaleborne without breaking your instance.
Built for whaleborne-1.21.1-1.2.5.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use whaleborne-1.21.1-1.2.5.jar. It targets 1.21.1 with Forge, NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 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 whaleborne-1.21.1-1.2.5.jar. It opens that exact file at the source.
About this project
What does Whaleborne add?
there's something stirring in the deep…something powerful…
Whaleborne

Description
This mod adds a new mob, The Hullback, a creature that resides within the deep oceans of the Minecraft world.

Taming Process
these creatures are friendly, but tragically are prone to becoming covered in gunk. if you clean up a Hullback using an Axe and Shears, the creature will be in your debt…

Pirate Ship Transformation
…They then can be Saddled then armored with 64 Planks… or any other armor material added through compat!

Additional Features
You can also find Widgets, useful additions and peculiar trinkets like sails, cannons and more, that can be installed on a Hullback after uncovering them in buried treasure and sunken ships…

The Hullback can only be controlled using the new Helm item..

Tips & facts:
- You can stack barnacles to make different sounds, up to nine blocks tall
- You can apply banners to sail and get them back with a water bucket :)
- You can open the hullback's inventory using E when riding to check on it
- You can open the cannon's inventory using E
- You can fire the cannon using the spacebar, but you need gunpowder first…
- If an anchor is installed, you can lower and raise it from the helm with your spacebar!
Project description from CurseForge.
Pick your setup
Whaleborne by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Whaleborne versions and loaders
whaleborne-1.21.1-1.2.5.jar
18 Sept 2026
whaleborne-1.20.1-1.2.5.jar
18 Sept 2026
whaleborne-1.20.1-1.2.4b.jar
12 Aug 2026
whaleborne-1.20.1-1.2.4.jar
12 Aug 2026
whaleborne-1.21.1-1.2.4.jar
12 Aug 2026
whaleborne-1.21.1-1.2.2.jar
25 Mar 2026
whaleborne-1.20.1-1.2.3.jar
25 Mar 2026
whaleborne-1.20.1-1.2.2.jar
21 Mar 2026
whaleborne-1.20.1_beta-1.2.1.jar
26 Nov 2025
whaleborne-1.20.1_beta-1.2.0.jar
12 Oct 2025
whaleborne-1.20.1_beta-1.1.1.jar
27 Jul 2025
1.20.1_beta-1.1.0
whaleborne-1.20.1_beta-1.1.0.jar
22 Jul 2025
Looking for an older file? The official CurseForge project page is in Resources.