Neptune Escape Rocket

The Neptune Escape Rocket is a vehicle that is used to leave Planet 4546B. It consists of five constructable parts: the Neptune Launch Platform, the Neptune Gantry, Neptune Ion Boosters, Neptune Fuel Reserve, and Neptune Cockpit. The Neptune Launch Platform can be built using the Mobile Vehicle Bay, while the other four components are built on the launch platform.

The Neptune Escape Rocket cannot be launched unless the Quarantine Enforcement Platform is disabled. Attempting to do so will result in the PDA informing the player that the base needs to be disabled.

Blueprints
The Player can find the blueprints for the Neptune Launch Platform inside the Captain's Quarters of the Aurora. The door will be locked, but can be accessed using the entry code, which is 2679. Accessing the data entry will unlock the Blueprints.

Neptune Launch Platform
The Neptune Launch Platform is a very large floating barge with ladders on each side. In the middle is a circular indentation where the rocket will sit. On one side is a terminal used to construct the individual rocket segments, and can be used to rename and recolor the rocket once it has been fully completed. The terminal possesses fabrication drones similar to the Mobile Vehicle Bay.

Neptune Gantry
The Neptune Gantry is the second component of the Neptune Rocket. It consists of a small metal pillar with a bridge (which eventually leads into the Neptune Rocket) and an elevator which can lift the player to the top of the gantry to access the cockpit.

Neptune Ion Boosters
The first stage of the Neptune Rocket consists of a cylindrical shape with launching clamps connected to it. This portion consists of the thrusters, and serves no personal function other than to progress to the other stage.

Neptune Fuel Reserve
The second stage adds more to the body of the rocket, including the hatch that leads inside, where the player can find a ladder leading up to the cockpit, as well as lockers surrounding the central column. Three levers can be found in this section as well, and it is required to pull them in order to launch. The engine is housed here as well.

Neptune Cockpit
The third and final stage represents the main cockpit of the Neptune Rocket. Here the player can access the Time Capsule launcher, main CPU, life support systems, and the command chair which will initiate the launch to escape Planet 4546B.

Once the Neptune Escape Rocket has been completed, the player can "say farewell" to their Cuddlefish.

The Time Capsule can be placed in a slot, and can be edited to include various items, a picture, and a message to be found by other players. After the rocket's launch, the Time Capsule is jettisoned and its contents, along with the message and picture included in it, are uploaded to the Subnautica website where users can vote to support their favorite capsules. Time Capsules that receive supportive votes and pass moderator consideration then have a chance to spawn in a random player's game.

Crafting
Neptune Launch Platform

Neptune Gantry

Neptune Boosters

Neptune Fuel Reserve

Neptune Cockpit

Trivia

 * The Neptune Launch Platform would originally require Ion Cube Matrix in order to craft the Neptune Fuel Reserve. This was later changed in version 1.0, with the craft using Ion Power Cells instead.