Jump drives: Difference between revisions

Jump drives are not modules. They are built into the hull of the ship. All ships that contain a jump drive require the {{Sk|Jump Drive Operation}} skill to pilot. The following classes of ship contain jump drives:  

* [[Jump Freighters]]

* [[Black Ops Battleship]]s

Unlike stargates, which are free to use, jump drives require fuel. The jump drive comes with a special fuel bay. The fuel required depends on the faction that constructed the jump drive, and can be produced by refining [[Ice_Mining#Ice_distribution|corresponding ice]]. The respective fuel type for each faction is:  

!Faction!!Isotope type

|-

* The skill {{Sk|Jump Fuel Conservation}} reduces the fuel consumption by 10% per level which means that you use half the fuel at the maximum level of five.

The following table shows the range, base fuel consumption, and fuel capacity of all jump drive-capable ships.

{{#css:

}}

|-

|-

! Base

! (m3)

! (units)

| Dreadnought

| 266 666

|-

| Carrier

|-

| FAX

|-

| Supercarrier

| 5 000

| 166 666

|-

| Titan

| 2 000 000

|-

| Anshar

| 9 400

|-

| Nomad

| 10 000

|-

| 4.0

| 8

|}

Activating a jump drive has similar constraints to activating a warp drive: jump drives cannot be activated if the ship is either inside a [[Tackling#Warp_disruption_fields|warp interdiction bubble]] (from an [[Interdictor]] or [[Heavy Interdiction Cruiser]], or if the ship has been [[Tackling#Fitting for tackling|warp disrupted]] below a Warp Core Strength of 0. (However, a jump drive can be activated regardless of the jumping alignment.)

The amount of fuel used in a jump can be calculated with the following formula.

The white part of the formula applies to all [[#Operation|jumpdrive capable ships]]. The green part only applies to [[Jump Freighters]] and the red part only applies to [[Jump Freighters]] and [[Rorqual]]s. The red part is [[Stacking_penalties|stacking penalized]] so the order of the modules is from highest bonus to lowest bonus.

|-

! Variable Name !! Meaning !! Valid Values !!  

== Cynosural Field Types ==

''Cynosure'' (pronounced like "sigh no sure") is a little-used word outside of EVE. It means a guide, or a person or thing that draws attention towards itself. It originates in the ancient Greek name for the North Star, making it a very appropriate term for the cynosural fields of New Eden.

=== Normal Cynosural Fields ===

Ships with a jump drive can only jump to cynosural fields or beacons. Cynosural beacons are provided by a player-deployed navigational structure, the [[Pharolux Cyno Beacon]] (colloquially simply called "beacon" or "cyno beacon"). Cynosural fields are generated or "lit" by the ship module Cynosural Field Generator I. Cynosural fields and their generators are colloquially abbreviated as "cyno". A normal (or "hard") cynosural field can be seen on the overview from any place in the system and is "warpable". Further, it appears on the universe map.

If you want to light a cyno you have to be in a fleet (only fleet members can jump to that cyno) and slower than 500 m/s. After you light the cyno your nominal speed becomes zero but you continue to drift and can also be bumped, but the cynosural field stays at the position, where you lit it. Further, you cannot dock in a station or structure and cannot eject, but you can self destruct. Indeed you can light a cyno after you initiated the self destruct sequence. This is used as a trick for extra safe traveling. The cyno needs several seconds until it appears on the universe map. If you light the cyno shortly before you self destruct and immediately jump to it, you can minimize the risk of being caught. But, be aware that if you jump to a cyno in the same moment as the cyno ship dies, you still jump but you land at the destination system's star, not at the former spot of the cyno.

=== Covert Cynosural Fields ===

Covert Cynosural Fields are a special variant of the "normal" Cynosural Fields discussed above. In a context in which either type might be mentioned, a "normal" cyno is often called a "hard cyno".

Only [[Black Ops Battleship]]s can jump and bridge to covert cynos. Black Ops Battleships can only bridge ships which are able to fit a Covert Ops Cloaking Device (it doesn't have to be fitted). Bridges by Black Ops only last 20 seconds. For more details about bridging mechanics see the below [[#Bridging|section]] about it.

=== Industrial Cynosural Fields ===

* the [[Venture]], which has a role bonus cutting the industrial cyno's Liquid Ozone cost in half

== Bridging ==

A Jump Bridge is a way for a [[Titan]], [[Black Ops Battleship]] or [[Rorqual]] to launch its allies, who cannot use jump drives, across space to where they are required.

Titans can bridge all subcapital ships. Black Ops Battleships can only bridge ships which are capable of fitting the [[Cloaking|Covert Ops Cloaking Device]]. (The ships do not need to have the module fitted in order to use the bridge.) This includes the [[Sisters of EVE]] ships, and [[Strategic Cruisers]] fitted with the Covert Reconfiguration subsystem. Rorquals can only bridge [[Mining Frigate]]s, [[Expedition Frigates]], [[Mining Barges]], [[Exhumers]], and the [[Porpoise]].

The ship with the generator must first be within jump range of a cyno lit by a member of the fleet.

The act of opening a Titan bridge costs 500 units of Strontium Clathrates, modified by {{sk|Jump Portal Generation|icon=yes}}. There is no cost for opening a Black Ops or Rorqual bridge. When ships jump across the bridge, they consume fuel from the bridging ship's fuel bay. If there is no fuel in the fuel bay, the ship will consume fuel stored in the cargohold.

Ships that jump through a jump portal use up isotopes from the bridger's fuel hold based on the jumping ship’s mass. Because of this, it is good practice in fleets to turn your [[propulsion equipment]] off before taking a bridge to conserve the bridger’s fuel. The isotopes used will be of the same type as the bridger's jump drive. The formula to calculate how much fuel is used is:

:<math> \rm Fuel\ usage = Mass \times \text{Portal Consumption Mass Factor} \times \text{Base cost} \times \text{Skill mod} \times \text{Distance in LY}</math>

|

!Titan

|-

|Skill Modifier

|}  

:<math> 1\,470\,000\,\text{kg} \times 0.000000135 \times 700\,\text{isotopes} \times 0.5 \times 1\,\text{ly} = 69.4575\,\text{isotopes}</math>

A bridge can be activated if the host ship is in a warp disruption bubble, but ships inside the warp disruption bubble cannot take the bridge, only those outside a warp disruption bubble and who are not warp disrupted below a warp core strength of 0.

As of the October 2014 Phoebe release, traveling using a Jump Drive, Jump Portal, Jump Bridge, Covert Jump Drive or Covert Jump Portal causes fatigue to capsuleers and a delay is required between successive jumps. This delay is determined by the jump fatigue mechanic. Jump fatigue is presented as a time value, indicating the time it will take to decay to zero, and can accumulate to a maximum of 5 hours. It decays in real time, whether logged in or not. Jump fatigue is recalculated after every jump.

* [[Freighters]]

* [[Jump Freighters]]

* Industrial Command Ships i.e. the [[Porpoise]] and [[Orca]]

* [https://www.eveonline.com/news/view/sovereignty-warfare-and-jump-fatigue-changes-coming-in-the-march-release Dev Blog Jump Fatigue Changes March 2018]

* [https://fatigue.nakamura-labs.com/ Jump Fatigue and Jump Activation Cooldown calculator]

[[Category:Ships]]

[[Category:Game mechanics]]