Source-checkedVehicles & ships

Calm Seas

by EnyMan · for Valheim

Scale ocean wave height, calmer near land and rougher out at sea. Server-synced. Boats, swimming and the water you see all follow it; sailing speed stays vanilla.

596Downloads
7d agoLast updated
BepInExLoaders
ThunderstoreSource

About Calm Seas

From Thunderstore

Scale ocean wave height, calmer near land and rougher out at sea. Server-synced. Boats, swimming and the water you see all follow it; sailing speed stays vanilla.

Calm Seas

Scales ocean wave height: calm near land, rougher out at sea (or the other way round). Applies to both the water you see and the water your boat rides on.

⚠️ Work in progress

This mod is still being tuned. Expect some visual glitches around boats in multiplayer:

  • Wave height follows each player's own position, and the boat rides the waves of the player whose game is simulating it. Another player can see that boat sit slightly above or sink slightly into the water.
  • It is most noticeable when watching someone else's boat from a distance (for example from the shore while they sail at sea), and minor for players on the same boat near the coast.
  • It is only visual — boats handle normally for the person steering. Out on open sea, where everyone uses the sea value, it goes away.

Feedback and screenshots are welcome on GitHub.

Configuration (server-synced)

BepInEx/config/com.mous.calmseas.cfg, section [Waves]. On multiplayer servers the server's value is pushed to all clients (admins only):

| Setting | Default | Description | | --- | --- | --- | | LandWaveScale | 0.3 | Wave multiplier while you are on land or in shallow water (0–5, 1 = vanilla) | | SeaWaveScale | 0.7 | Wave multiplier over open sea (0–5, 1 = vanilla) | | OpenSeaDepth | 20 | Water depth in metres under you where the sea value fully applies; shallower water blends the two |

Details

  • The scale follows your position, so all the water around you uses the same value.
  • Only waves change. Wind strength, sailing speed and weather are vanilla.
  • Must be installed on the server and every client, so everyone's boat sits on the same wave.

Installation

Install via the Thunderstore Mod Manager or r2modman (dependencies are pulled automatically), or manually place CalmSeas.dll into BepInEx/plugins/.

License

MIT — source at https://github.com/EnyMan/valheim-mods

Highlights

From source data

Loaders

Runs on BepInEx.

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 7d ago.

Calm 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
1.1.1, released 2026-10-27

Game versions by loader

LoaderGame versionsNewest
BepInEx

From 2 recorded builds of Calm Seas.

Recent builds

BuildReleasedGame versionsLoaders
1.1.12026-10-27n/aBepInEx
1.1.02026-09-17n/aBepInEx

Dependencies

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Calm 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 catalog
Listed on Thunderstore as “Content”

Vehicles & ships

Cars, boats, aircraft, ships and other things to drive or fly.

Works on a server

From source side support

Thunderstore lists server-side support for Calm 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 2026-10-28Open ↗
  • ✓AuthorEnyMan, as published on Thunderstore
  • ✓LicenseNot published by the sourceFree

Calm Seas, answered

Generated from the mod’s own source data.

Do my players need to install Calm Seas?

Thunderstore lists server-side support for Calm Seas as optional: it can run on a server, but isn’t required there.

Which loaders does it support?

BepInEx.

Is it free?

Yes. Calm Seas is free to download from Thunderstore.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Calm Seas on a Valheim server.

Deploy in about a minute from $9.99 a month, then add Calm Seas in one click.