Skill: Control Expertise

Overview
Control Expertise is a Lt. Commander Science skill that is available to all players once at least 5 skill points have been spent. This skill increases the effectiveness of Control Effects (listed below) that you use while increasing the resistance to those effects. Purchasing it allows you to also purchase Improved Control Expertise and/or  if you choose. With Improved Control Expertise, you gain a total of 50% effectiveness toward your control effects and 100 control resistance, though you may further increase your Control Expertise substantially using various items and abilities (listed further below).

How Control Expertise affects abilities depends on the type:
 * Confuse, Disable and Placate abilities will have their duration extended.
 * Hold, Pull and Repel abilities will have their magnitude enhanced.
 * Flight Speed and Turn Rate debuffs will either have a set duration and have their magnitude increased, or a set magnitude and will have their duration increased.

Note that for the purposes of Control Effects, Disable refers to the entire ship being disabled. Effects that only disable a single susbsytem&mdash;Weapons, Shields, Engines, Auxiliary, or Cloaking devices&mdash;are considered Drain Effects and have their duration affected by the skill instead.

Bridge Officer abilities
Increased duration: Increased magnitude:
 * (confuse)
 * (confuse)
 * (placate)
 * (confuse)
 * (disable)
 * (confuse)
 * (pull)
 * (speed debuff)
 * (pull, max benefit 400 CtrlX)
 * (repel)
 * (hold)
 * (repel)
 * (pull)

Bridge Officer abilities with Control Effects that are *not* affected by Control Expertise include:

Console abilities
Increased duration: Increased magnitude:
 * (confuse, placate)
 * (disable)
 * (disable)
 * (disable)
 * (placate, disable)
 * (placate)
 * (slow)
 * (disable)
 * (hold)
 * (pull, repel)
 * (pull)
 * (pull, speed debuff, turn debuff)
 * (repel)
 * (pull)
 * (speed and turn debuffs)
 * (speed debuff)
 * (flight speed debuff)
 * (speed and turn debuff)
 * (repel)
 * (repel)
 * (repel, also a disable with 3-piece set bonus)
 * (pull, flight speed and turn rate debuff, also disables cloak)
 * (repel)
 * (pull)
 * (pull)
 * (pull)
 * (speed and turn debuffs)
 * (hold)
 * (speed and turn debuffs)

Console abilities with Control Effects that are *not* affected by Control Expertise include:

Weaponry
Some Chroniton and Tricobalt projectiles may proc control effects upon detonation, the duration of which can be boosted: Chroniton-based: Speed debuff To be tested: Transphasic-based: Chroniton speed debuff Tricobalt-based: Disable
 * Chroniton Torpedo Launcher
 * Inhibiting Chroniton Torpedo Launcher
 * Wide-Angle Advanced Inhibiting Chroniton Torpedo Launcher
 * Krenim Chroniton Torpedo Launcher
 * Chroniton Mine Launcher
 * Starship Trait:
 * Advanced Temporal Defense Chroniton Torpedo Launcher (Cluster torpedo mode)
 * Inhibiting Chroniton Mine Launcher
 * Advanced Inhibiting Chroniton Rapid Mine Launcher
 * Chroniton Flux Torpedo Launcher (slow)
 * Temporal Disruption Device (slow)
 * Voth Transphasic-Chroniton Launcher
 * Wide-Angle Voth Transphasic-Chroniton Launcher
 * Tricobalt Torpedo Launcher
 * Elachi Subspace Torpedo Launcher
 * Trilithium Tricobalt Torpedo Launcher
 * Tricobalt Mine Launcher
 * Vaadwaur Cluster Torpedo

Some other weapons with Control effects do not scale with Control Expertise, including:
 * Temoral Defense Chroniton weapons
 * Bio-Molecular Phaser and Disruptor weapons (Flight Speed debuff)
 * Bio-neural Warhead, despite being a Tricobalt explosive
 * Agony Phaser Energy Torpedo Launcher
 * Nausicaan Energy Torpedo Launcher
 * Particle Emission Plasma Torpedo Launcher (flight speed and turn rate debuff)
 * Plasmatic Biomatter Torpedo Launcher and other Plasmatic Biomatter weapons
 * Thoron Infused Polaron weapons (placate)

Set bonus, innate and other abilities
Increased duration: Increased magnitude:
 * (confuse)
 * (hold)
 * (repel)
 * Gravimetric Photon Torpedo Launcher (Gravimetric Rift pull)
 * (repel)
 * (repel; requires 4-piece set bonus)
 * (pull)
 * (hold)
 * (pull)
 * (hold)
 * (hold)

Modifiers
Following items or abilities will increase Control Expertise skill level, which in turn affects the performance of abilities in the section above.

Science consoles

 * Console - Science - Countermeasure System / /  (up to +39.4 at Mk XV Epic)
 * These 3 consoles function identically; they had separate functions in the past
 * Console - Science - Bellum Inertial Dampeners / (up to +39.4 at Mk XV Epic)
 * Console - Science - Exotic Particle Field Exciter [CtrlX] (up to +39.4 at Mk XV Epic)
 * Console - Science - Shield Refrequencer [CtrlX] (up to +25)
 * Console - Science - Temporally Shielded Datacore (up to +25)
 * Particle Focuser Science Consoles - [CtrlX] Modifiers (up to +39.4 at Mk XV Epic)
 * Weapon Signature Nullifiers and Amplifiers - [CtrlX] Modifiers (up to +39.4 at Mk XV Epic)

Engineering and Universal consoles

 * Console - Engineering - Conductive RCS Accelerator [CtrlX] (up to +39.4 at Mk XV Epic)
 * Console - Universal - Assimilated Module (up to +30.1 at Mk XV Epic)
 * Console - Universal - Boronite Laced Weaponry (+15)
 * Console - Universal - Chroniton Drive Actuator (up to +19.7 at Mk XV Epic)
 * Console - Universal - Covert Munition Deployment Console (up to +26.3 at Mk XV Epic)
 * Console - Universal - Bioneural Infusion Circuits (up to +29.5 at Mk XV Epic)
 * Console - Universal - Chains of Fire (+25)
 * Console - Universal - Deconstructive Resonance Emitter (+22)
 * Console - Universal - Energy Nullifier Disperser (+15, part of a set with which is affected by CtrlX)
 * Console - Universal - Enhanced Sensor Disruption Field (+25, has CtrlX set bonus)
 * Console - Universal - Gateway Trap Spawner (+5.3)
 * Console - Universal - Hostile Acquisition (+30)
 * Console - Universal - Mycelium Ambush (+13.3)
 * Console - Universal - Multi-Target Tractor Arrays (+13.3)
 * Console - Universal - Polaron Particle Inverter (+25)
 * Console - Universal - Polymorphic Probe Array (+20)
 * Console - Universal - Retrofitted Assimilator (+30)
 * Console - Universal - Weapon Sensor Enhancer (up to +42 at Mk XV Epic)
 * Console - Universal - Tachyokinetic Converter (up to +28.1)
 * Console - Universal - Threat Analysis Matrix (up to +28.1)
 * Saboteur's Supercharger Universal Console (up to +7.5, has CtrlX
 * Console - Universal - Cascading Gravimetric Disruptions (up to +17.1)

Other equipment
Various starship equipment grants Control Expertise, usually in the form of [CtrlX] modifiers, or [GG] when it's a Singularity Core. Some have integrated modifiers, meaning they grant Control Expertise despite not having visible [CtrlX] or [GG] modifiers. Maximum values shown below assume Mk XV quality.
 * Deflector Dishes (up to +85 with [CtrlX]x4 [CtrlX/*])
 * Secondary Deflectors (up to +48.3‬ with [CtrlX]x3 [CtrlX/*])
 * Braydon Reconnaissance Warp Core (up to +21.3)
 * Braydon Reconnaissance Singularity Core (up to +42.5)
 * Gamma Synergistic Resilient Shield Array (up to +10.6)
 * Delta Alliance Hyper-Efficient Impulse Engines (up to +42.5)
 * Krieger Wave Disruptor weapons (proc: up to +25 per weapon)
 * Saboteur's Disruptor weapons (proc: +30, has CtrlX set bonus)

Set bonuses

 * 2-piece: Dyson Joint Command Technologies (+20.3)
 * 2-piece: Exotic Particle Generators (+28.5)
 * 2-piece: Hypercooled Technology Set (+35.5)
 * 2-piece: Prevailing Regalia (+15)
 * 2-piece: Saboteur's Gambits (+20)
 * 2-piece: We Are Smart (random chance of +50)
 * 3-piece: Temporal Defense Initiative Starship Technologies (+20)

Duty officer system

 * Duty officers
 * Fleet Support Matter-Antimatter Specialists (up to +25 when is used)
 * Kelvin Timeline Warp Theorists (+10 for 20 sec when using or )
 * Critical success on duty officer assignments:
 * Assignment: Adjust Toroidal Compression Toils (+25 for 2 hours)
 * Assignment: Align Heisenberg Compensator (+25 for 2 hours)
 * Assignment: Compensate for Sensor System Input Fragmentation (+25 for 2 hours)
 * Assignment: Rebalance Bussard Magnetic Field (+25 for 2 hours)
 * Assignment: Verify Effectiveness of Countermeasure Systems (+25 for 2 hours)

Traits

 * Reputation traits
 * (+15 (+18.8) Resistance Rating to Control effects)
 * (+20 (+25) Hold, Knock, Repel, Disable, Slow Resistance Rating)
 * (+15% (+18.8%) Control and Drain Ability Effectiveness when activating a Captain ability)
 * (+30 (+37.5) Control and Drain Resistance Rating)
 * (+100 (+125) to Science Stats (including Control Expertise) for 8 seconds.)
 * Personal space traits
 * (+50)
 * (up to +30)
 * (+20% Bonus Control Ability Effectiveness)
 * (Immunity to Control debuffs for 10 secs when any shield facing is depleted)
 * Starship traits
 * (+40 for 20 sec upon use of certain abilities)
 * (Cleanse Control debuffs when taking damage at 50% or less hull strength)
 * (+50 for 15 sec upon use of certain abilities)

Other

 * From the Constable specialization:
 * Spec_constable_t1_subdue_icon.png Subdue: 15%/30% Bonus Control Ability Effectiveness vs Constable Antagonist
 * Spec_constable_t1_tunnel_vision_icon.png Tunnel Vision: +30/60 Resistance Rating to Control Effects not from Antagonist
 * Control Resist (Space), an Endeavor perk (Up to +30, resist component only)
 * , a bridge officer ability (up to +20)
 * , the Joined Trill species trait (+9)
 * 's Support Configuration, a ship ability (+40)

Offense
Usage of Control abilities can proc other effects:
 * Science Skill 2 R2.png Skill: Control Amplification
 * Inhibiting Secondary Deflector - Delayed Radiation Damage to target of Science Boff Control abilities
 * Reputation traits:
 * - +7% (9.4%) Bonus Energy Weapon and Projectile Damage against Controlled targets
 * - +1 (1.25%) Damage and Speed to self for 20 sec when activating Control Abilities. Stacks 10 times.
 * Space traits:
 * - Disables a random enemy subsystem when activating Science Control Bridge Officer Abilities.
 * - +45% Hull Regeneration for 10 sec when activating Control Bridge Officer Abilities.
 * - +25% Increased Flight Speed and Turn Rate for 6 sec when activating Science Control Bridge Officer Abilities.
 * - Using Control Bridge Officer Abilities reduces the cooldown of all Universal Consoles.
 * Starship traits:
 * - +30% Exotic Damage and Projectile Weapon damage for 15 sec when activating Control Bridge Officer Abilities.
 * - +5% to Critical Chance for 15 sec when activating foe-targeted Control Bridge Officer Abilities on an enemy that is affected by a Control effect. This effect can stack five times.
 * - Activating a Control bridge officers ability deals Physical DoT that spreads from the affected enemy.
 * - 10% Firing Cycle Haste for Energy Weapons for 15 sec when activating Control Bridge Officer Abilities.

Defense
Being affected by a Control ability can proc effects as well: de:Fähigkeit: Kontrollexpertise
 * Reputation traits:
 * - +35% (43.8%) Critical Severity for 5 sec when affected by a Control effect.
 * - Immunity to Control effects for 5 (6.3) seconds when affected by a Root, Hold, Disable or Repel effect.
 * Space traits:
 * - The first Control effect applied to the ship is cleansed and the ship gain 3 seconds of Control immunity thereafter.
 * - You gain a bonus to Control and Damage Resistance and a Heal over Time effect for ten seconds when you are the target of a Control effect.