BigSub

 | Property | Details |-| :--- | :--- |-| **Internal ID** | Trident |-| **Type** | Large Submarine |-| **Status** | Planned (EA2 Update) |-| **Acquisition** | Found in world (Wreck) |+|---|---|+| Internal ID | Trident |+| Type | Large Submarine |+| Status | Planned (EA2 Update) |+| Acquisition | Found (Wreck) |+| Power Source | Axum Fission Core |  -The **BigSub** is the current internal name of a large submarine planned to be added in the EA2 update of *Subnautica 2*, albeit in an incomplete state. The submarine previously used the internal name **Trident** until it was changed due to potential trademark concerns, as well as for "implying too much" about the vehicle.+![Trident Blockout WIP](Trident_Blockout_WIP.png)  -According to game files, finding and restoring the wrecked sub to working condition will be the main focus of the EA2 update. This process will involve finding an "Axum Fission Core," suggesting the vessel may be of Axum design or a hybrid model.+The **BigSub** is the current internal name of a large submarine planned to be added in the EA2 update of Subnautica 2, albeit potentially in an incomplete state. The submarine previously used the internal name **Trident** until it was changed due to potential trademark concerns and to avoid implying too much about the vehicle's capabilities or lore.  -## Development & Features+According to game files, finding and restoring the wrecked sub to working condition will be the main focus of the EA2 update. However, early development notes suggest it may not be fully drivable until a later update. The submarine may be of Axum design, or a hybrid model, as powering it will require an "Axum Fission Core."  -Remaining information regarding the BigSub is sparse, though the developers have discussed some key aspects:+## Key Features  +Remaining information regarding the BigSub is sparse, though developers have discussed several key aspects:+  *   **Acquisition**: The BigSub will be found, not crafted, with only one existing in the world.-*   **Durability**: Unlike the Cyclops from *Subnautica*, this submarine will not be fully destructible. It can be put out of commission, but repair will still be possible. The goal is for the sub to be recoverable rather than destroyed.-*   **Multiplayer**: Multiple players are not required to operate the submarine; it is equally usable in both singleplayer and multiplayer. However, distinct roles ("jobs") can be fulfilled by additional players in co-op mode.-*   **Interior**: Lead developer Anthony Gallegos has suggested that the submarine could have a modular interior that makes use of both free-build and pre-built compartments, allowing players to swap out rooms similar to an XCOM base.+*   **Durability**: Unlike the Cyclops from the original Subnautica, this submarine will not be fully destructible. It can be put out of commission, but repair will still be possible.+*   **Multiplayer**: Multiple players are not required to operate the submarine; it is equally usable in both singleplayer and multiplayer. However, distinct roles can be fulfilled by additional players in co-op.+*   **Interior**: Lead developer Anthony Gallegos has suggested that the submarine could have a modular interior that makes use of both free-build spaces and pre-built compartments that can be swapped out.   ## Gallery   ### Development  -![An early in-development sketch illustrating the idea of a modular interior.](Big_Sub_modularity_concept.png)+![An early in-development sketch illustrating the idea of a modular interior](Big_Sub_modularity_concept.png)   ## References   1. Discord message - "Nope, our working name for the big sub is literally the BigSub" - July 15, 2026. 2. Imgchest - "You're in luck! You're going to be getting the Seafrog and the BigSub this year" - July 31, 2026. 3. Imgchest - "It's coming but probably not in complete form. Don't make any YouTube videos about it" - August 10, 2026. 4. Discord message - "yeah, placeholder name. No idea what we'll call it | because for all i know trident is owned by some trademark" - October 9, 2025. 5. Imgchest - "We've been trying to move away from internal names for stuff like 'Trident' as it implies too much about the thing (biome, vehicle etc), so we have more general things like Big Sub or Scorpius" - July 15, 2026. 6. Discord message - "you will acquire the big sub" - March 28, 2026. 7. Imgchest - "i can answer that, i think. Yes. I want it so the big sub is recoverable, rather than destroyed. So think of it as the server would have A big sub" - April 22, 2025. 8. Discord message - "For the bigsub, we will likely have 'jobs' for each of the 4 coop players, however you will not need 4 players to use it. We are a single player game with optional coop. We will unlikely ever introduce anything that is only single player or coop player focused" - July 30, 2026. 9. Discord message - "i still think some degree of modularity is potentially cool. Like if we had a free build space on the big sub, but also rooms you could wholesale swap out like an XCOM base" - June 2, 2026.