The term Influence refers to the measure of control the Sansha Nation has over a particular constellation. When the Sansha have just invaded a constellation the influence meter will be full.
The influence of the attacking force (Sansha's Nation) the system effects and information on what type of presence they have is indicated by the Incursion Profile meter. An example of an Incursion Profile bar can be found on the right. Next to the word “Incursion Profile” we can see that this system is under attack from the Sansha, and that the type of combat that will be undertaken in this system is Headquarter sites.
In this example the Sansha's influence is 100%. This means they are unchallenged in this constellation. This also means that the effects they have will be at their strongest. As sites are completed by capsuleers, the Sansha's influence will become less. As will the affects of their influence.
When the Sansha are invading a constellation, the following penalties or “incursion affects” will occur:
If capsuleers stop defending the constellation against the Sansha's forces, then the attacking forces will regain their influence over the system.
If the Sansha's Influence over the constellation measures greater than 20%, the FC will require you to fit for High Influence! This is to compensate for the increased damage that you will receive due to the reduced resistances while fighting the Sansha under their influence.
The Graphic further down indicates the changes that you must make to be safe under High Influence fleets!
You have enough EHP, you do not need to refit!
If the fleet is flying under high influence, you will be required to show your influence fit on the waitlist before you can be invited. Please add your high influence fit to the waitlist so that the FC does not need to contact you to get this done!
You may link us up to five fits, past two ships you'll be unable to show all of your influence fittings at once, feel free to advise via the waitlist comment as to if you have the ships and their high influence fittings or not.
Once the Incursion Influence has reached below 20% roughly, the FC will call for a short intermission to return to dock-up and switch to normal non-influence fits.
It is also possible to carry your modules in cargo and with the help of a mobile depot refit them. This isn't particularly recommended as the fleet will take the short intermission regardless. Unless a majority of the fleet is able to do this it is unlikely to improve the fleet's ability to return to ISK making by any noticeable margin.