Create Aeronautics: Weight
by duble
Weight is a NeoForge addon that gives items, players, mobs and containers a real mass, which the Sable-based physics then uses on simulated ships.
What it does
The addon assigns weight to items, armor, fluids and entities, and that weight is summed into a carried total for players and mobs. Weight counts for items in player inventories, the contents of containers and storage blocks, fluids in tanks, and armor equipped on players and mobs. Fluid weight is read from the weight:tanks tag, and blocks in weight:ignored are excluded.
Its purpose is to make the placement of cargo and crew matter on simulated contraptions. Mass placed on a ship pushes it toward one side, so a load that piles up on one deck tilts the hull. Jumping or landing on a deck transfers force to it, scaled by how hard the jump or fall is. The mod is published for NeoForge on 1.21.1 only, and it runs on client and server.
Key features
Carried inventory weight
Each item in a player's inventory adds to a total weight, which the mod derives from the item's mass.
Container contents
Items stored inside containers and storage blocks count toward the mass of the block they sit in.
Fluid tanks
Fluid mass is calculated through the weight:tanks tag, with weight:ignored used to exclude specific blocks.
Armor and mob gear
Armor weight is derived from its protection points, and equipped gear adds mass to players and mobs.
Tunable values
Mass values for players, mobs and cargo can be adjusted in the in-game config, and JSON weight files reload live.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who run simulated contraptions and want cargo and crew placement to affect the ship. Server owners who tune how much mass players and mobs carry can adjust the values in the config.
Questions
Does Weight need Sable to work?
Does the server need the mod?
Can the mass values be changed without restarting?
In the catalog
Create Aeronautics: Weight is one of 29,952 Game mechanics mods on ModsFinder, and one of 12,140 Game mechanics mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from duble
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What the author says
Weight is a Create: Aeronautics addon — it makes entity, inventory, and cargo placement matter on simulated contraptions. Players, mobs, and containers standing or placed on deck add real mass to Sable's physics simulation.
Official listing
- Modrinth page
- modrinth.com/mod/create-aeronautics-weight
- Owner
- duble
- Published
- 2026-07-12
- Updated on Modrinth
- 2026-08-05
- Facts verified
- 2026-10-15