“Orokin secrets cannot remain secret forever! Start talking!”The following article/section is conjecture. Content is subjected to change/removal as the game progresses. Please do not use this article for critical in-game information.
The Railjacks, set to release in 2019, are 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.
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 to manage different areas of the ship including the helm, battlestations, killing enemies, and putting out on-ship fires. Players can swap positions if needed.
Although it does not appear that the Railjack can dock directly with enemy ships, it does allow a Tenno to exit the ship while in space and board enemy vessels, taking the fight directly to them.
It is speculated that additional Railjacks will be able to be researched in the Clan Dojo.