Skill: Drain Expertise

Overview
Drain Expertise is a Lieutenant Commander Science skill that is available to all Lieutenant Commanders. There are two total skills in this chain and 1 specialty skill, each costing 1 Space Point to purchase.
 * The first skill node gives +60 Drain Expertise.
 * Improved Drain Expertise gives an additional +40 for a total of +100 Drain Expertise.
 * Science_Skill_4.png adds an Electrical Damage DoT when using drain abilities.

Bridge Officer abilities
Power drains: Shield drains:
 * - Reduces time for offlined subsystem to recover
 * - Random subsystem offline duration
 * - When used with an Engine power drain doff
 * - Hazard
 * - Subsystem Offline
 * - Random subsystem offline duration
 * - When used with an Engine power drain doff
 * - Hazard
 * - Subsystem Offline
 * - Subsystem Offline
 * - PBAoE
 * - When used with a Shield drain doff
 * - When used with a Shield drain doff
 * - When used with a Shield drain doff
 * - When used with a Shield drain doff

Console abilities
Power drains: Shield drains:
 * - PBAoE
 * - PBAoE
 * - Engine power drain, engine subsystem offline duration, cloak disable duration
 * - PBAoE
 * - Passive
 * - Refracts
 * - Small craft only
 * - Small craft only
 * - PBAoE Shield steal
 * - PBAoE
 * - Only when used in conjunction with Tholian fighters
 * - PBAoE
 * - Only when used in conjunction with Tholian fighters
 * - Only when used in conjunction with Tholian fighters
 * - Only when used in conjunction with Tholian fighters
 * - Only when used in conjunction with Tholian fighters

Weaponry
Many different weapon procs have drain effects. Power drains:
 * The standard Polaron weapon proc reduces all of the target's subsystem power levels by 25 for 5 seconds. This proc, and other power drain procs, can be found on most Polaron-based weaponry, as well as some non-Polaron weapons:

Not all Polaron-based weapons have drain procs, such as Chronometric Polaron, Piezo-Polaron, Thoron-Infused Polaron and Vaadwaur Polaron emitters. Shield drains:
 * The standard Tetryon weapon proc deals bonus shield damage to all of the target's shield facings. This proc, and other shield drain procs, can be found on most Tetryon-based weaponry, as well as some non-Tetryon weapons:

Not all Tetryon-based weapons have drain procs, such as Antichroniton Infused Tetryon, Diffusive Tetryon, or the Competitive Wargames Tetryon weapons.

Other
Includes set bonuses, traits, and innate abilities. Abilities that are not affected by Drain Expertise:
 * Improved  (Only on  Singularity Cores with [Wave] modifier)
 * Bajor Defense Hyper Injection Warp/Singularity Cores - Siphoning Field Passive power steal
 * M.A.C.O. Resilient Shield Array/Adapted K.H.G. Resilient Shield Array - Passive
 * Delta Alliance Deflector Array/Delta Alliance Trajector Warp Core - Passive
 * - Power drain resistance
 * - Shield Resistance debuff
 * (3-piece: Quantum Phase Catalysts) - Power steal
 * Trait: Heavy Tachyon Mine - Shield drain hazard
 * Trait: Forced Challenge - Increases forward shield drain
 * Trait: Piezo-Electric Weapon Amplification - AoE shield drain from weapon damage
 * Trait: Pilfered Power - Power steal when using Control Abilities
 * Trait: Reverberation - Increases duration of Shield subsystem offline
 * Trait: Subnucleonic Transferal - Power steal when using
 * (3-piece: Tholian Technologies Set) - Shield drain
 * Power Siphon Drones' power drain
 * Tachyon Drones' shield drain
 * (2-piece: Omega Force space set) - Passive shield drain
 * Mutually-exclusive abilities: Due to requiring certain equipment, you may only have access to one of these abilities at a time:
 * (3-piece: Jem'Hadar Space Set) - Shield drain
 * (3-piece: Assimilated Borg Technology) - Power steal
 * (3-piece: Breen Absolute Zero) - Power steal
 * (3-piece: New Romulus Command Advanced Prototype Space Set) - Shield steal
 * (3-piece: Quantum Phase Applications)
 * Enhanced Weapon Systems Efficiency 2-piece set bonus
 * directly improves the potency of power drains, but is not affected by Drain Expertise.
 * Warp Cores that innately boost power drain resistance.
 * Carrier pets:
 * Orion Interceptors' weapon and engine power drain
 * Stalker Fighters' aux power drain
 * Carrier pets:
 * Orion Interceptors' weapon and engine power drain
 * Stalker Fighters' aux power drain

Modifiers

 * Abilities & Traits
 * K-13 Survivor Science Bridge Officers (+10)
 * trait (+10; +15 on the Superior version)
 * (up to +30)
 * (+9)
 * captain ability (up to +40)
 * Critical success on duty officer assignments:
 * Assignment: Assay State of Power Flow Capacitor Coolant System (+25 for 2 hours)
 * Assignment: Rebalance Thermal Deflector (+25 for 2 hours)
 * Deflector Dishes with the [DrainX] modifier, as well as numerous special deflectors. See the Deflector Dish page for a list.
 * All Graviton Deflector Arrays
 * All Neutrino Deflector Arrays
 * All Tachyon Deflector Arrays
 * Secondary Deflectors with the [DrainX] modifier
 * Solanae Secondary Deflector
 * Other Equipment:
 * Crafted Impulse Engines with the [Damp] modifier (+33)
 * Quantum Phase Combat Impulse Engines (up to +30)
 * Krieger Wave Disruptor weapons (proc: up to +25 per weapon)
 * Saboteur's Disruptor weapons (proc: +30)
 * Temporal Defense Initiative Regenerative Shield Array (up to +30 at Mk XIV)
 * Singularity Cores with the [PI] modifier, as well as a few special warp and singularity cores. See the Warp Core page for a list.
 * Science Consoles:
 * Console - Science - Flow Capacitor / (up to +37.5)
 * These 2 consoles function identically; they had separate functions in the past.
 * Console - Science - Emitter Refocuser (up to +18.8)
 * Console - Science - Exotic Particle Field Exciter [DrainX] (up to +37.5)
 * Console - Science - Nausicaan Siphon Capacitor (up to +39.4)
 * Console - Science - Shield Refrequencer [DrainX] (up to +25)
 * Threat-Scaling Science Consoles [DrainX] (up to +37.5)
 * Particle Focuser Science Consoles [DrainX] (up to 37.5; up to 62.5 with [DrainX]x2)
 * Other Consoles: (max one of each)
 * Console - Engineering - Conductive RCS Accelerator [DrainX] (up to +37.5)
 * Console - Universal - Destabilized Tachyon Emitters (+20)
 * Console - Universal - Enhanced Breen Energy Dissipator (+25)
 * Console - Universal - Nukara Particle Converter (up to +21.7)
 * Console - Universal - Sensor Burnout (+15)
 * Console - Universal - Tachyon Particle Field Emitter (+25)
 * Console - Universal - Quantum Phase Converter (up to +37.5)
 * Console - Universal - Zero-Point Energy Conduit (up to +24.6)
 * Console - Universal - Rule 62 Multipurpose Combat Console (up to +28.1)
 * Saboteur's Supercharger Universal Console (up to +7.5)
 * Set bonuses:
 * 2-piece: Apex Predator Set (+17.8)
 * 2-piece: Dyson Joint Command Technologies Set (+20.3)
 * 2-piece: Hypercooled Technology Set (+35.5; Breen starships only)
 * 2-piece: Lukari Restoration Initiative Armaments (+20)
 * 2-piece: Lukari Restoration Initiative Starship Technologies (+20)
 * 2-piece: M.A.C.O. /  Adapted Honor Guard (+17.8)
 * 2-piece: Nukara Appropriated Munitions (+17.8)
 * 2-piece: Saboteur's Gambits (+20)
 * 2-piece: Tachyon Manipulation Technology Set (+35.5)
 * 3-piece: Temporal Defense Initiative Starship Technologies (+20) - When using certain abilities
 * 2-piece: We Are Smart (random chance of +50)

Strategy
Science Vessels and Carriers have built-in Subsystem Targeting abilities, putting four bridge officer drain abilities at your disposal. Even if your ship is built around using projectiles, you can equip at least a single energy weapon just to execute these abilities continuously.

Many drain items and abilities have a degree of synergy with one another:
 * The deflector and engine from the Quantum Phase Applications set boost Drain Expertise, which will improve the set bonus ability, and its shield provides a shield heal when using certain drain abilities. Likewise, each piece of the Quantum Phase Catalysts set either boosts Drain Expertise or benefits from it, and its set bonus gives the  ability that benefits from DrainX. Using both sets will greatly benefit a Phaser-focused drain build.
 * Two pieces of the Hypercooled Technology Set are drain abilities, its 2-piece set bonus grants Drain Expertise, and its 4-piece set bonus lowers the cooldown of those abilities. The other Breen set, Absolute Zero, has a Deflector that boosts DrainX and a singularity core that grants Improved when flying in a Warbird, and its 3-piece grants the  ability.
 * The 2-piece set bonus from the Jem'Hadar Space Set boosts Drain Expertise, while the 3-piece grants the that benefits from it; if flying on a Cardassian or Dominion ship, Polaron weaponry is enhanced.
 * The 2-piece set bonus from the M.A.C.O. set boosts Drain Expertise, while the shield from that set provides a passive drain ability.
 * The deflectors from the New Romulus Command Advanced Prototype Space Set provide a large bonus to Drain Expertise, which will benefit the 3-piece ability.
 * Both the Apex Predator and Nukara Appropriated Munitions sets have a 2-piece bonus that boosts Tetryon damage and Drain Expertise, which their weapons benefit from, and a 3-piece set bonus that improves their main weapon's firing gimmick. Since almost all Tetryon weapons benefit from Drain Expertise, this can be combined with other Tetryon-focused sets, such as Nukara Strikeforce Technologies and Krenim Temporal Manipulation.

Note
The current maximum drainX that can be put un a ship with no buffs is 915.