Dahak is the AI/Central Computer of the Fourth Imperium Utu-class Battle Planetoid Dahak. He was built 52,000 years ago and is exactly the size of the Earth's moon. Dahak, along with his normal crew of 250,000 (with enough space for 400,000), wield a frightening array of weaponry and support assets that allow him to engage not just enemy fleets, but entire civilizations.

This does cover a mix of Fourth Imperium and Empire feats, as neither one has feats in every category. Feats marked [/E] in their tag are feats from Empire ships which should be somewhat more capable than him. Feats with [/II] only apply to his upgraded hull which he gets towards the end of the second book.

Weapons Systems

General Firepower Statements

• Dahak says he is capable of vaporizing Earth.

• Dahak is said to have the firepower to shatter planets.

• A group of Asguard class Planetoids are said to be able to destroy a solar system.

Missiles

• [Super High Yield/II] Next generation gravitonic warheads are capable of causing supernovas and destroying every celestial body within around a light second of the detonation. Though it is unknown if Dahak ever gets equipped with these.

• [High Yield] His high yield gravitonic missiles can destroy planets and damage some stars.

• [Medium High Yield/E] 16 Gravitonic Warheads destroy Iapetus, one of Saturn's moons.

  • For reference, Iapetus has a GBE of 1.7e26 joules or around 42 petatons of TNT.

• [Medium Yield/E] Medium yield warheads (anti-matter) are in the gigaton range.

• [Low Yield] Point defense missiles are in the megaton range.

• [Ammunition] If taken literally and assuming every missile kills one target, this statement would imply Dahak plus 78 other planetoids have around three million missiles between them.

He has two main delivery methods for missiles, through hyperspace or though normal space,

Hypermissiles

Hypermissiles are fired through hyperspace faster than light essentially teleporting the munitions on top of their target.

• [Range] Have an effective range of at least 15 light minutes against Achuultani ships.

• [Range/E] Dahak's upgraded hull would have an effective range of ~38 light minutes against a 120,000 ton sublight battleship.

• [Velocity/E] 4th Empire hypermissiles have a velocity of 4000c

  • NOTE: I think this is a case of Weber doing the math wrong, 4000c for 7 seconds would mean the missile is traveling 7.8 light hours which is far higher than the stated range which gets mentioned a few paragraphs earlier (see the previous feat before the velocity one). The missile's velocity to make the 7 seconds travel time is more one the order of 200-300c.

• [Accuracy] Hits Imperial fighters from around a light second.

• [Ammunition count] After several months of fighting a 300,000 ton orbital defense center has less than 400 hypermissiles Dahak will of course have magnitudes more than that.

Normal Missiles

Normal missiles are well normal missiles.

• [Range/speed/E] Travel at .78c have an effective range of ~12 minutes against a Dahak like target.

Energy Weapons

• [Yield]It's energy weapons are capable of killing it's own Battleships.

  • Battleships is capable of withstanding a few Achuultani antimatter warheads before being destroyed.
  • Achuultani antimatter warheads are often in the gigaton range.

• [Range] Effective range should be measured in light seconds with the maximum range being possibly as much as 10.

Maneuverability/Reaction time

• [FTL] Maximum FTL speed of 6!c or 720c

• [FTL/II] Maximum FTL speed of ~800c when using the Enchanach Drive or ~2400c when using hyperdrive.

• [STL] Maximum STL speed of .524c

• [STL/II] Maximum speed of .70c along with being able to drop out of FTL closer to stars.

• [STL Acceleration] Accelerates "instantly" to maximum sublight speed and turns fast enough while doing evasive maneuvers an enhanced human views the stars as wheeling around.

• [Reaction Time] Is said to be able to perceive the time between FTL jumps.

  • These occur every few femtoseconds.

• [FTL/Miscellaneous] There is time dilation while using Hyperdrive, so the journey takes less time for the crew than it does from a resting frame of reference.

Durability and Defenses

Durability

Dahak's shields are a lot stronger than his hull.

• [Shields] Takes a gravitonic warhead to the shields which causes minor internal damage.

  • Some types of gravitonic warheads can destroy planets.

• [Hull/E] A different Battle Planetoid takes a ten gigaton warhead which makes a 20 kilometer chasm in it's hull.

• [Hull/Limit/E] A different Battle Planetoid was irreparably damaged by an asteroid strike of unknown magnitude while it was unshielded.

• [Self Repair] After considerable sabotage to his power systems Dahak is able to self repair enough to regain sentience over the course of 110 years without a crew.

• [Self Repair/Limit] Dahak is unable to repair his long range FTL communications system without components he can't manufacture on his own (though this is while he was pretending to be dead so he couldn't exactly gather new resources).

Defenses

• 500 ton decoys that match Dahak's electronic and gravitonic signature. Also ECM capable of befuddling incoming missiles.

• Counter missiles.

• Point defense energy weapons. Also note from this quote that as Dahak gains information about his opponents during combat his countermeasures become more effective.

• Dahak can "decontaminate" the ship which floods every compartment with lethal chemical and radiological agents as a final solution in the event the crew can't deal with boarders.

• Command One (the "bridge") is protected by many 20 centimeter thick doors each able to withstand kiloton range warheads.

  • Some of the people attacking were in Imperial Powered Armor

• One of Dahak's parasite craft causes a (21st Century tech) missile to simply vanish, Dahak presumably also has this capability.

• Doors to Command One are 15 centimeters thick.

• Stealth Fields which are able to hide a group of Planetoids from Achuultani sensors for a time.

Sensors

• Knowing where too look he can detect craft under Imperial stealth fields from a light second away.

• Detects an missile launches at 12 light minutes shortly after dropping out of FTL.

• Detects objects as far away as five light ours.

• Detects a hydroponics bay while outside a base.

• A planet based system detects incoming craft in hyperspace from 55 light minutes.

• [/II] Detect incoming FTL ships at ~12.6 light days.

• [/II] With other ships, is able to do a "centimeter by centimeter" scan of a planet to find a small bomb.

Miscellaneous

• Dahak can create artificial gravity within himself that is different from that felt on his hull.

• Has the tech to deorbit a moon essentially equivalent to Luna into the Sun.

• Dahak can operate essentially indefinitely as long as crew count remains stable.

• Dahak's internal transport system can move people around at more than 20,000 kph making a journey from one side to the other only take around 10 minutes.

• Easily hacks 21st Century computer tech.

• If Dahak has similar communication ranges as this listening outpost then he should be able to send messages around 1000 LY.

• A Achuultani tractor beam (referred to as crude compared to Imperium technology) has a range of 500 km.

• Officer accommodations are somewhat luxurious.

• Dahak's FTL drive is capable of causing large perturbations in planet's orbits and novas if used properly.

• The closest safe distance to a star when disengaging FTL is around eleven light hours.

• Dahak is fitted a number of parks and other entertainment facilities.

• [/II] Simulates probability of an enemy ship detecting weapons detonations from hyperspace based on previous data.

• Has human sized/shaped remotes which can train people in hand to hand combat.

• [/II] Alters a Planetoid's programming without anyone knowing.

Support Assets

Imperial Guard Flotilla

• At a certain point he controls a constellation of fifty-two Asgerd-class planetoids, sixteen Trosan-class planetoids, ten Vespa-class assault planetoids.

• It also has some additional support assets.

• This has a description on what the classes focus on.

• Dahak needs to remote operate them as at the time Earth couldn't supply a crew for all of them and Dahak couldn't simply download his personality into them.

• Some of these out mass Dahak Considerably.

• It was initially estimated that craft like this would be 20 times more capable than Dahak. But this was made before they actually encountered any real military vessels.

• They are capable of both kinds of FTL travel.

Sublight Warships

• Normally carries 200 sublight warships. They would carry similar types of weapons to Dahak though obviously much weaker.

• These sublight warships are said to be twice as fast as the Achuultani warships which make 28% the speed of light.

• Battleships (BB) are around eighty thousand tons.

• BB's energy weapons can sheer the top 300 meters off the top of a mountain and have tractor beams that can lift "megaton" masses of mountain.

• Destroyers (DD) are around eight thousand tons (also a tractor beam feat).

Fighters

• Dahak carries 300 fighters after he had donated much of his support assets to the defense of Earth.

• It is unknown how many fighters were built by Earth before the Achuultani attack, but after a few months of fighting they possibly had as much as 3000 fighters in total (a tithe is apparently a tenth if taken literally).

• Capable of moving several times the speed of sound in atmosphere.

• If they are outside of the atmosphere they can be equipped and use hypermissiles. They also have relativistic ground attack weapons and three kiloton anti-fighter missiles.

• [5I] A Fighter's Energy Gun creates a trench "wider than a man is tall and thrice as deep"

• [5I] Stealth Fields make them invisible to normal humans.

• Fighters are capable of killing Achuultani warships which while weaker than human ships are capable of slugging it out with them if they have a moderate numbers advantage.

  • Specifically fighters in combination with ODCs (and presumably other ships) managed to kill 285 ships.
  • Seeing as they can engage Achuultani ships they are probably capable of relativistic speeds.

• Fighters are apparently capable of avoiding human missiles.

Other Parasite Craft.

• One of Dahak's Parasite Craft grabs a 21st century tech space craft and drags it along with the occupant feeling no acceleration.

• They can create a stealth field that blocks radio transmissions.

• A stealth field hides a craft from radar and greatly quiets it's decent.

• A Cutter accelerates to eight times the speed of sound without the occupant feeling any acceleration.

• The same Cutter was described as being capble of blowing up a military base without being detected.

Personnel and Logistics

• Dahak can enhance humans so that they have three times better reaction time, eight times stronger, considerably more durable, enhanced senses, a life expectancy of ~5793 years and the ability to interface with Imperium technology.

  • The above numbers represent his capability at launch, he has come up with improvements.
  • Repellent Force Field.

• He is able to enhance a bit less than 100,000 people within a few months.

• [E] At least 9000 suits of combat armor.

• Has Orbital Industrial Units which build pretty much anything in Dahak's tech base including self replication which allows for geometric expansion of their industrial capacity as long as they have sufficient resources to support it.

  • Capable of building new warships (these would be BB and DD size not Battle Planetoid sized).
  • Within two or so years builds a total of ~560 sublight warships (while also focusing on other projects like a planetary shield, a core tap, orbital defense centers, additional industry and more).
  • Due to how planetary shields work they are difficult to protect from attack but they do work better than planet based infrastructure (which they can also build.

• He can built gravity generators powerful enough to replicate the gravitational pull of the moon.

• A base built without his full industrial capacity has shields strong enough the bombardment needed to break though them would exterminate 70% of human life of Earth (keep in mind this base is in Antarctica).