Seabases (Subnautica)

Seabases are installations created by the player through the use of the Builder Tool. Many different modules are available to allow the creation of unique Seabases. One of their primary applications is to provide an area where the player can return for Oxygen and serve as an alternative to the Escape Pod as a base of operations. Seabases can be customized in the same way as the Cyclops through the installation of Lockers, Small Lockers, Fabricators, Fragment Analyzers, Specimen Analyzers, Benches, and Aquariums.

Hull Integrity

Hull Integrity refers the ability of your Seabase to withstand the pressure of the surrounding water. The majority of the Seabase modules will lower the integrity once added but the amount will vary by module. As Seabases are built at a greater depth the integrity reduction caused by each module will increase. Hull integrity can be increased by constructing Reinforcement panels, placing your Seabase on a Foundation, or installing Bulkheads.

When the hull integrity of a Seabase reaches zero, it will begin to form hull breaches. Any corridor or room that is connected to the breach will fill but Bulkheads allow the player to compartmentalize the base and prevent floodwaters from moving between compartments. However, if the integrity remains below zero then eventually every compartment will develop a leak and the base will fill completely with water. To avoid this, quickly increase the integrity and fix all hull breaches in the base using a Welder.

Energy Usage

Energy can be provided to a Seabase by building Solar Panels in the base immediate surroundings. Placeable Items such as the Fabricator will drain energy from the Solar Panels. The energy levels replenished during the daytime.

Seabases do not require energy to operate devices in Freedom Mode.

How to Build a Seabase

1. Find a suitable flat piece of land, or terraform the environment with the Terraformer.
2. Equip the builder, click the RMB to bring up a crafting menu.
3. Select the desired module.
4. Look at the desired building place (the outline of the module will become green if the location is valid).
5. Adjust the rotation by pressing Q or E or by scrolling the mouse wheel.
6. Place the module by clicking the LMB.
7. Once placed, hold the LMB to finish the building process.
8. Go to Step 2 and repeat.

If you want to deconstruct a Seabase module, equip the builder and hold "E" while facing the module. The materials used to create the module will be returned to your Inventory.

Bugs

When on land, if the hull integrity of a base sinks below zero, the Seabase will still flood with water.

Available Modules

Image	Name	Description	Surface Integrity	Ingredients
	Corridor	Provides a straight path	-1 Unit	2x Titanium
	L-Corridor	Creates a 90 degree turn	-1 Unit	2x Titanium
	T-Corridor	Creates a T-junction	-1 Unit	2x Titanium
	X-Corridor	Creates an intersection	-1 Unit	2x Titanium
	Foundation	Provides a flat surface for base building	+2 Units	4x Titanium
	Hatch	Allows entering and exiting of Seabases	-1 Unit	2x Titanium 1x Glass
	Window	Provides transparent areas of Seabases	-1 Unit	2x Glass
	Ladder	Allows vertical movement between Seabase modules	0 Units	2x Titanium
	Reinforcement	Increases Hull Integrity	+7 Units	2x Titanium 1x Lithium
	Bulkhead	Limits the extent of flooding	+2 Units	2x Titanium 2x Silicone
	Room	Provides a central hub for expansion	-1.3 Units	6x Titanium
	Vertical Connector	Extends the reach of ladders	-0.5 Units	2x Titanium
	I-Corridor Glass	A version of the corridor that provides more visibility	-2 Units	2x Glass
	L-Corridor Glass	A version of the L-corridor that provides more visibility	-2 Units	2x Glass
	Observatory	Provides a near-panoramic view	-3 Units	3x Enameled Glass
	Moon Pool	Allows the docking of the Seamoth	-8 Units	6x Titanium

Gallery

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  Seabase Concept Art

For a more complete gallery, visit Seabases/Gallery.