About Ultimate Seas
From ThunderstoreA better ocean: faster boats (up to 10x), boats and carts on the map, bigger boat camera zoom, and more Sea Serpents, also by day.
Ultimate Seas
A better ocean: faster boats (up to 10x), boats and carts on the map, bigger boat camera zoom, and more Sea Serpents, also by day.
<img src="https://img.shields.io/badge/%E2%8C%A8%20PRESS-F3-f0a020?style=for-the-badge&labelColor=1a1a2e" alt="Press F3" height="90">
⌨️ PRESS F3 IN THE GAME TO OPEN THE SETTINGS PANEL ⌨️
Every feature of this mod is turned on and tuned in the in-game panel.
Can't use F3? Open the console with F5 and type ultimateqol_config.
> ### ⌨️ How to use > 1. Install and start the game. > 2. Press F3 to open the settings panel. > 3. Find the Seas options in the sidebar (or type in the search box at the top) and turn on what you want. > > Everything is off by default, so the game stays vanilla until you turn something on. > > 🔑 To change settings you need admin access with devcommands: be listed in the server's adminlist.txt (on a dedicated server) or be the host of the world. Changes are synchronized to all players in real time.
Features
Boats
Page Boats with one card per boat – Raft, Karve, Longship, Drakkar and boats from other mods – each with the boat's picture, the game's own name and a slider from 100% (vanilla) to 1000%, plus a plain line such as "2.5× the normal speed". Sail and paddles both get faster and the boat picks up speed faster too (its push is multiplied and its water drag divided by the same factor, so the top speed is exactly that many times the game's); steering follows by itself. Changes apply at once, even while sailing. Very high speeds can outrun the loading of the world on slow computers or servers.
Boats on the map and camera
- Boats and carts on the map (two admin options on the Map page, off by default) – every boat / cart is shown with its own icon to all players, only in explored areas. Light on the network: the server checks them every 3 s but only sends the vehicles that appeared, moved more than 2 m or disappeared (a parked boat costs nothing); a player who joins gets the whole list once.
- Boat camera distance (admin, 0 = vanilla) – a bigger zoom-out limit while steering or standing on a ship, so large sails do not block the view.
Sea Serpents
- Sea Serpent spawns (100–1000%) and Sea Serpents by day – a more dangerous ocean, using the game's own serpent spawner.
⚠️ Experimental
This mod is still experimental and may contain bugs. Back up your world and your character, and turn features on a few at a time.
💬 Bugs and suggestions
Join the Discord: discord.gg/aMkN89Cuas
Powered by Ultimate QOL, installed automatically as a dependency. The F3 panel also shows its other options, all off by default.
Highlights
From source dataLoaders
Runs on BepInEx.
Footprint
Rated a light load on a server.
Last update
Its author last shipped an update today.
Ultimate Seas on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Valheim servers, for BepInEx servers. We download it from Thunderstore, place it, and restart the server.
- Server side
- Optional on the server
- Server type needed
- BepInEx
- Server load
- light
- Smallest plan we suggest
- Valheim — 4 GB (4 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.0.5, released 2026-11-04
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| BepInEx |
From 4 recorded builds of Ultimate Seas.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.0.5 | 2026-11-04 | n/a | BepInEx |
| 1.0.3 | 2026-11-02 | n/a | BepInEx |
| 1.0.1 | 2026-10-31 | n/a | BepInEx |
| 1.0.0 | 2026-10-31 | n/a | BepInEx |
Dependencies
- Required: BepInExPack Valheim
- Required: Ultimate QOL
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Ultimate Seas on a Valheim server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogQuality of life & UI
Small conveniences, tweaks and interface improvements players notice straight away.
Works on a server
From source side supportThunderstore lists server-side support for Ultimate Seas as optional: it can run on a server, but isn’t required there.
Compatibility
- Game
- Valheim
- Loaders
- BepInEx
- Runs on
- Serveroptional on the server
- Requires
- One-click install needs a BepInEx server.
Verified at the source
- ✓ThunderstoreOfficial listing, checked 2026-11-04Open ↗
- ✓AuthorIgao, as published on Thunderstore
- ✓LicenseNot published by the sourceFree




