EVE Ship equipment and ship modifications
Ship equipment fits in specially designated slots on each ship. There are three types of slots: high, medium, and low. The amount and type of equipment that can be fitted onto a particular ship is limited by the number of slots available as well as the ship's Power Grid and CPU output.
"High" slots typically fit weapons, Probe Launchers, Tractor Beams and Salvagers. Weapons in Eve are divided into four types: turrets, launchers, drones and smartbombs. Each type requires a different set of skills in order to use effectively, and has distinctive behaviors and uses. Each of the four playable races favors a different subcategory of these weapon types, e.g. Missile Launchers (Caldari, Minmatar and Amarr), Energy Turrets (Amarr), Hybrid Turrets (Gallente and Caldari), Projectile Turrets (Minmatar) and drones (Gallente). Additionally, certain modules have an effect on tactics used in combat including Warp Scramblers and Warp Disruptors (and their counterparts, Warp Core Stabilizers), Webifiers, Energy Vampires and Energy Destabilizers.
Every weapon has its advantages and disadvantages. Missiles are available that do different types of damage, and many launchers can use more than one type of missile. Slower missiles, such as torpedos, tend to do more damage to large targets. Drones follow the target, and shoot at it, causing different types of damage based on drone type. Smartbombs are area of effect weapons that deal damage to any target within a certain radius of the ship and are available in three sizes to reflect Powergrid and CPU use as well as net damage. Also, there are different types available that deal specific kinds of damage.
"Mid" and "low" slots typically fit support modules, including hull, armor, shield, electronics, engineering, and engine upgrades as well as electronic warfare modules. Electronic warfare is an important part of Eve; electronic countermeasures modules keep an opponent from "locking" onto a target or interfere with weapon systems, and can be countered using various electronic counter-countermeasures modules.
Ship modifications or 'rigs' are one-time use items designed to permanently increase one of a ship's attributes, usually at the cost of another. Like implants and boosters they cannot be removed without being destroyed.[36]

