Railjack

Railjacks are large Orokin interceptor spacecraft used by the Tenno. These formidable spacecraft feature a plethora of weaponry and defensive systems that allow them to face even large capital ships head-on in direct combat. Cephalon Cy serves as the Railjack's navigator and executive officer.

While a Railjack can be controlled by a single Tenno, optimal performance requires the ship to be crewed by a full Squad of four Tenno, each responsible for managing different areas of the ship including the helm, battle stations, security against intruders, repairs, and putting out on-ship fires. Players can fluidly take on any role as needed to keep the Railjack in fighting shape.

Although Railjacks cannot dock directly with enemy vessels, they are equipped with an Archwing Slingshot that allows Tenno to be shot directly at enemy ships to breach the hull and board them. Alternatively, Tenno can also exit into space using their Archwings to fight individually as well as explore areas of interest in space.

A Railjack is constructed during the Rising Tide quest, which requires completion of The Second Dream. Railjacks are managed, researched, and customized in a Clan Dojo's Dry Dock, and each player will only be able to see their own Railjack.

Railjack Build Requirements
These are personal builds; clan participation is only for the Dry Dock itself and the initial Cephalon Cy research. Hence, Clan multipliers do not apply. Unlike crafting items in the Foundry, resources needed for repairing Railjack components can be contributed in stages. Each section repair requires 12 hours to complete in the Dry Dock and cannot be rushed with platinum, requiring roughly a minimum of 3 days to fully build.

When completed, the Railjack can be seen floating above the Orbiter, connected by a large transport tube. Players can board their personal Railjack from the Orbiter's bottom deck, in the middle between the three rooms.

Fuselage
The Fuselage repair after retrieval and installation requires:

Propulsion Systems
The Propulsion Systems repair after retrieval and installation requires:

Port Nacelle
The Port Nacelle repair after retrieval and installation requires:

Starboard Nacelle
The Starboard Nacelle repair after retrieval and installation requires:

Tail Section
The Tail Section repair after retrieval and installation requires:

Engine Cowling
The Engine Cowling repair after retrieval and installation requires:

Reliquary Key
Once the player has finally completed construction of the Railjack, they will be able to board it, but the ship's power source, the Reliquary Drive, is offline which prevents it from taking flight. After inspecting the drive, Cephalon Cy directs the Tenno to find a Reliquary Key on Lua. This mission is a simple snatch-and-grab to collect the key and extract, avoiding the Corrupted and Sentient enemies along the way.

With the Reliquary Key in hand, the Tenno inserts it into the Reliquary Drive, supplying power to the Railjack. The player is now finally ready to embark on Empyrean missions through the Railjack's navigation console.

Components
The Railjack has three main components that determine its stats: Shield Arrays for Shield capacity and regeneration rate/delay; Engines for top speed, acceleration, and turning rate; and Reactor for Railjack's Avionics Capacity and Flux Energy Capacity for Tactical Abilities and Battle Avionics.

Engines
The default boost is 2x, so an engine with 0.26 boost speed multiplier would have a boost speed of 2.26x

Armaments
The Railjack comes equipped with a variety of armaments. There is the Nose Turret that is manned by the pilot, two Wing Turrets on the port and starboard sides of the Railjack that can be used by crew members, and Ordnance weapons that are special armaments that consume munitions.

It is important to note that Railjack armaments use different damage types from any other weapons types currently in the game, with Arch-weapons being used outside of a Railjack having their damaged converted to the corresponding Empyrean analogue. The below list shows the list of Empyrean specific damage types, along with their corresponding status effect:

Also, note that the same instance of a turret cannot be equipped to the nose and wing slots a the same time, two instances are necessary.

Apoc
{|class="listtable sortable" style="width: 95%;" !Type ! data-sort-type="number"| Accuracy ! data-sort-type="number"| Crit Chance ! data-sort-type="number"| Crit Multi ! data-sort-type="number"| Falloff ! data-sort-type="number"| Fire Rate ! data-sort-type="number"| Heat Accretion ! data-sort-type="number"| Heat Capacity ! data-sort-type="number"| Reload ! data-sort-type="number"| Status ! data-sort-type="number"| Trigger ! data-sort-type="number"| Damage ! data-sort-type="number"| Total Damage 15.9 Particle 37.1 Plasma
 * Apoc
 * 40
 * 10%
 * 2.0x
 * 500-1000
 * 8.33
 * 20
 * 1000
 * 3.0
 * 5%
 * Auto
 * Auto
 * 53.0
 * Apoc MK I
 * 40
 * 10%
 * 2.0x
 * 2.0x

28.8 Particle 67.2 Plasma
 * 8.33
 * 20
 * 1000
 * 3.0
 * 5%
 * Auto
 * 96.0
 * Lavan Apoc MK I
 * 50
 * 10%
 * 2.0x
 * 2.0x

28.8 Particle 67.2 Plasma
 * 8.33
 * 20
 * 1000
 * 3.0
 * 7%
 * Auto
 * 96.0
 * Vidar Apoc MK I
 * 28.6
 * 14%
 * 2.0x
 * 2.0x

28.8 Particle 67.2 Plasma
 * 8.33
 * 20
 * 1000
 * 3.0
 * 5%
 * Auto
 * 96.0
 * Zetki Apoc MK I
 * 66.7
 * 15%
 * 2.0x
 * 2.0x

43.2 Particle 100.8 Plasma
 * 8.33
 * 80
 * 1000
 * 3.0
 * 5%
 * Auto
 * 144.0
 * Apoc MK II
 * x
 * x
 * x
 * x

x Particle x Plasma
 * 8.33
 * x
 * x
 * x
 * x
 * Auto
 * x
 * Lavan Apoc MK II
 * x
 * x
 * x
 * x

x Particle x Plasma
 * 8.33
 * x
 * x
 * x
 * x
 * Auto
 * x
 * Vidar Apoc MK II
 * 28.6
 * 20.0%
 * 2.0x
 * 2.0x

49.2 Particle 114.8 Plasma
 * 8.33
 * 20
 * 1000
 * 3.0
 * 7%
 * Auto
 * 164.0
 * Zetki Apoc MK II
 * 66.7
 * 21%
 * 2.0x
 * 2.0x

73.8 Particle 172.2 Plasma
 * 8.33
 * 80
 * 1000
 * 3.0
 * 7%
 * Auto
 * 246.0
 * Apoc MK III
 * x
 * x
 * x
 * x

x Particle x Plasma
 * 8.33
 * x
 * x
 * x
 * x
 * Auto
 * x
 * Lavan Apoc MK III
 * 50
 * 20
 * 2x
 * 2x

78.9 Particle 184.1 Plasma
 * 8.33
 * 20
 * 1000
 * 3.0
 * 14%
 * Auto
 * 263
 * Vidar Apoc MK III
 * 28.6
 * 28%
 * 2x
 * 2x

78.9 Particle 184.1 Plasma
 * 8.33
 * 20
 * 1000
 * 3.0
 * 10%
 * Auto
 *  263 
 * Zetki Apoc MK III
 * 66.7
 * 30.0%
 * 2.0x
 * 2.0x

118.5 Particle 276.5 Plasma
 * 8.33
 * 80
 * 1000
 * 3.0
 * 10%
 * Auto
 * 395.0
 * }

Photor
NOTE: Heat accretion values may be incorrect. The tooltip says zero, but equipping one, leaving drydock, then returning shows a nonzero heat accretion.

Turrets
Apoc =


 * -|Carcinnox =


 * -|Cryophon =


 * -|Photor =


 * -|Pulsar =

Ordnances
Galvarc =


 * -|Milati =


 * -|Tycho Seeker =

Avionics
Avionics are the Mod equivalent to Railjacks. They can be acquired from Empyrean missions. There are three types of Avionics: Battle, Tactical and Integrated. Battle Avionics are Railjack's offensive abilities, a max of three can be equipped at any time. Tactical Avionics are Railjack's utility and support abilities, a max of three can be equipped at any time. Integrated Avionics provide passive stat bonuses to the Railjack, a max of nine can be equipped at any time. Each Avionic takes up a specific amount of capacity. They can also be upgraded using Dirac.

The Avionic Grid are the slots that Avionics are equipped in. They can be upgraded up to three times using Dirac in order to slot in more powerful Avionics.

Battle
2. Particle Ram

Deploy a particle ram dealing 1500 damage per second. Deactivate to launch the ram outwards for 6 second. Flux energy cost 50

Shatter Burst

Creates a barrage of 4.5(r0)-5.5(r4) explosions per second over 10(r0)-14(r4)s, dealing 400 damage in 35(r0)-45(r4)m. Flux energy cost: 50 Avionics:4(R0)-8(R4)

3. Seeker Volley

Fires 38-50(rank 4 in slot rank 3) homing missiles. 10 avionics capacity(rank 4) Flux energy cost: 100

Tactical
Battle Forge R0(4 avionics) Reduce forge Cooldown by 35s. Cooldown: 480s

Fire Suppression R0(4 avionics) Extinguish 2 fires. Cooldown: 300s

Squad Renew R0(6 avionics) Heal all Railjack squad members by 65%. Cooldown: 300s

Intruder Stasis R4(10 avionics) Freeze all Enemy Boarding Parties for 45s. Cooldown: 300s

Void Cloak R4(10 avionics) Cloak from Enemies for 53s Engine Speed reduced to 50%. Cooldown: 120s

Payload
Players can stock up on Railjack specific resources from the payload before starting an Empyrean mission.

During Empyrean missions, the payload can be restocked from the Resource Forge located at the back of the Railjack. This uses resources obtained during the mission.

Revolite
The Omni gear item requires Revolite to carry out repairs, such as fire and electrical hazards and hull breaches, to the Railjack. It costs 5 and 5  to craft 50 Revolite.

Flux Energy
Battle and Tactical Avionics use Flux Energy. It costs 15 and 15  to craft 100 Flux Energy.

While Flux Energy can be crafted freely at the Dry Dock, Intrinsics Rank 2 Engineering is required to craft them mid-mission.

Munitions
Munitions are required to launch Ordnance. It costs 10 and 10  to craft 5 Munitions.

While Munitions can be crafted freely at the Dry Dock, Intrinsics Rank 3 Engineering is required to craft them mid-mission.

Dome Charge
Dome charges are consumed by Forward Artillery. It costs 20 and 20  to craft 1 Dome Charge.

While Dome Charges can be crafted freely at the Dry Dock, Intrinsics Rank 5 Engineering is required to craft them mid-mission.

Trivia

 * The player can climb up and walk on top of the Railjack in the drydock, with each piece increasing the walkable area.
 * The player can stand on flying platforms the workers use as well, which initially lacked a collision box.
 * Railjack seems to have a capability to perform a long-distance interplanetary travel without any help from the Solar Rails. This is probably a basis for the name 'Railjack'.
 * In Aeronautics, an aircraft's engines and propulsion systems are supposed to be housed in nacelles. In contrast, the Railjack's Propulsion Systems are located on top of the fuselage, separated from the nacelles.
 * However, Cephalon Cy refers to the Propulsion Systems as the Void Engine as it's fitted on the Railjack, suggesting its primary purpose is for Void jump/translation, rather than in-flight propulsion. This is also evident in TennoCon 2019's Railjack demo.
 * During the mission to recover the propulsion systems Cephalon Cy remarks that the Railjack's "Orgone Accumulator" is damaged. Orgone is a pseudo-scientific spiritual energy or life force centered around selfish and primal desires, particularly libido. This is also probably a reference to a novel The Void Captain's Tale, in which spaceships are powered by orgasms of female pilots as a parody to Wilhelm Reich's Orgone Accumulator.
 * A Reliquary is the proper term for a container for a holy object, indicating that the Reliquary Drive contains or is meant to contain an object the Orokin or the Dax consider sacred.
 * While difficult to see inside prior to it, obtaining and inserting the key for the reliquary drive makes the void energies less opaque, and hence making it possible to easily see a giant mummified finger inside the drive.