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Yuumi-class Battleship

Designed in late YE 22, the Yuumi was a strong battleship that served in the Star Army of Yamatai that was known for its elaborate interior, and notable for being the first ship to have a KAMI. Its class was retired by the Star Army in YE 29.

New Standard Speeds

Cat Starship Type Sublight Engines Distortion Field Hyperspace Drive
1 Standard Warships .375c (~112,422 kilometers per second) 18,750c (~2.14 ly/h) 394,470c (0.75 ly/m)

Damage Capacity

See Damage Rating (Version 3) for an explanation of the damage system.

  • Hull: 50
  • Shields: 50 (Threshold 5)

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1. About the Yuumi

    The Yuumi-class battleship filled the role of rapid delivery of extremely heavy firepower, from long distances. Unlike the destroyers, the ship can enter a combat area and maintain a sustained attack, rather than a long-range volley. Its extremely effective weaponry, coupled with its range, speed, heavy armor, and command capability make it ideal for facing groups of ships that outnumber it. The ship is rather extravagant in construction, and is considered as well to be one of the most luxurious assignments a Star Army officer can receive.

    The Yuumi-Class Grand Star Battleship featured a top-of-the-line combined distortion propulsion system, made by Ketsurui Fleet Yards. AvaNet provided one TTD Type B5. The B5 (Battleship) Drive could transport the contents of a twenty-mile-wide sphere, the same diameter as the B3. The B5, however, can be moved off-center of the host ship (in this case, the GSB), so long as the ship is somewhere in the sphere. This allowed the ship to position more ships behind it, etc. The B5 was intended to not only provide safe Transuniversal Teleportation for the host ship, but also for a large number of nearby smaller or equal-size vessels which may not have a TTD of their own. This allowed the host ship's escorts to forego TTD installation and use the saved space for other functions, such as extra ammunition. The Type B5 also had a precision mode which it can use to support the transphasic systems integration (overlapping multiple dimensions in the same space to increase interior space).

2. History and Background

    The Yuumi battleship is one of the largest and most dreaded ships in the Grand Star Army's fleet, and yet is is dwarfed by the battleships of most other fleets. As the powerful preuniversal technology of the Star Army was better understood and supplemented by its officers and by powerful mega-corporations, the government had begun taking its share of the public resources (it provides infinite free raw materials, but can confiscate or order any tech and products it sees fit) once more. The Mistress Empress of the Yamatai Star Empire had been in power for a few years and supervised the construction of the Grand Avatarial Star Battleship YSS Crusher (YB-00), and the construction of the Midgärd-class battleships YSS Raumarik (YB-01) and YSS Muspelheim (YB-02).  After her resolution to wean the Empire away from the all encompassing control of the avatars, she and her staff (Yuumi's quite an engineer, actually) designed a new vessel to take on desirable aspects of avatarial ships using technology to surpasses the more conventional Midgärd-Class GSB.

    In late YE 24, the Yuumi class suffered its first losses during a massive battle against some four hundred Elysian Ships.  During the battle, both the YSS Revelation and YSS Ketsurui Yui were irreparably damaged.  Both now lie at the bottom of the seas of Yamatai. This shocking loss of two of the GSA's most powerful ships, combined with new competition from Qel'noran Shipyards' Integrated Strike Force Battleship, injected new life into the Grand Star Battleship Upgrade Program, paving the way for upgrades of the remaining Yuumi Battleships, and the construction of new, more able Yuumi ships.

    The Yuumi was once again upgraded in early YE 25. This time, the trigger factors were the implementation of the PANTHEON System (of which the Yuumi is a central element) and the close call the YSS Empire (YB-10) had in the battle of Tau Ceti. Yuumi battleship were re-designated as command ships. The deity-like computer system, stealth capabilities,  and heavy weapons and armor of this ship make it ideal for commanding fleets in the heat of battle.

    Ships of class:
    YB-03 YSS Revelation (Prototype)
    YB-04 YSS Empress Ketsurui Yuumi
    YB-05 YSS Ketsurui Yui
    YB-06 YSS Sirithil Nos Fëanor
    YB-07 YSS Ketsurui Chiharu
    YB-09 YSS Kikyô
    YB-10 YSS Empire
    KB-01 Ketsurui (KFY Fleet)
    YB-11 YSS Gold Dragon
    YB-12 YSS Fortitude
    YB-35 Phantom
    YB-36 Ghost
    YB-37 Shadow
    YB-38 Image
    YB-39 YSS Jaren
    YB-65 through YB-164 

3. Dimensions and Crew Complement

    Organizations Using This Vessel: 
            Ketsurui Fleet Yards
            Star Army of Yamatai
            Yamatai Star Empire
    Type: Battleship
    Class: Ke-B2-2D Yuumi
            Ketsurui Fleet Yards
    Manufacturer: Ketsurui Fleet Yards
    Production: Very extensive (thousands made)

    Crew: 845 total (+ Servants of Officers)
    006 Command
    221 Command Staff
    600 Crew
    018 Command Support Staff
    Maximum Capacity: Maximum persons the ship can hold or support.
    Appearance: Detailed description of what the vessel looks like.
    Length: 3000 feet
    Width: 600 feet
    Height: 339 feet
    Decks: 28
    Mass: 250,000 tons

4. Performance Statistics

    Speed (STL): 0.60c
    Speed (FTL):  ~80,000c
    Transuniversal Teleportation: Effectively unlimited.
    Planet-Bound:  Can fly in atmosphere at speeds up to mach 2; can land in water (can't float without AG system).

    Range (Distance): Effectively Unlimited
    Range (Support): Can operate with a full crew for up to a year without replenishment.
    Lifespan: The vessel is intended to last forever.
    Refit Cycle: Automatic upgrades via the PANTHEON system

5. Inside the Yuumi

    Bridge (Main): The Yuumi Class bridge spans two decks:

         Level I: "The Pit" (The lowest level of the main bridge.)

        The pit is the most heavily staffed level on the main bridge. It houses Communications Station II (Dedicated to low-moderate level incoming communication traffic, as well as internal communications), Mission Operations  (A series of three stations monitors ongoing mission progress and operations), Starship Operations I (The central HUB, which monitors engineering, damage control, as well as resource allocation, and any other systems), several miscellaneous undedicated stations that can be devoted to any function and the sub-deck.

            Sub-deck: A lowered subsection of the first level contains the three starship pilot positions and the main navigation station for the flagship. The pilot stations each have been upgraded to accommodate console based interface, SLICS, and the new SPINE interface for the new NH-29 model.

        Level II: Command

        The command level of the main bridge is where the Captain and First Officer's armchairs are located as well as Communications I (Dedicated high priority communications handling), Main Tactical (Weapons and defensive systems control), several miscellaneous undedicated stations that can be devoted to any function and Science Stations I thru IV. The command armchairs are equipped with SLICS and SPINE interfaces, which can serve as auxiliary interfaces to navigation and other systems. The entire level is within view of a massive wide holo-screen and several smaller ones for displaying mission critical information.

            Level IIB: The aft section of the Command level contains two offices (one for the Commanding Officer, the second for the First Officer) and a small conference area for small important meetings.

    Crew Quarters: The Yuumi's standard quarters are very luxurious. Unlike most Star Army ships, they have their own bathrooms. A single, twin-size bed with silk sheets (and lots of soft pillows) is each room's most prominent feature, and an elaborate wooden desk between it and the wall on the door side. Opposite of the door and on the other side of the bed, the wall is made up of various storage compartments. The carpet in these rooms is thick and soft. These rooms are intended for one or two crew members each. Officer quarters consist of a bedroom, an office/entertainment room, a bathroom, a walk-in closet, and a dining room.

    Captain's Suite: Three floors of luxury. A highly customizable space to give the commanding officer of the flagship an oasis from the daily stresses of command. Drenched in the riches of the empire its finely hand-woven carpets, marble flooring, and two level bathhouse. It is truly grand. The first floor has open living space with a restroom off to the side, in which it is the option of the commanding officer upon arrival as to what furnishings and decor are put in the space. The second floor is the private area where the officer will sleep and work during off-duty hours. Space is included for up to a king sized bed, as well as any other furnishings requested. A small office area is included on this level to provide access to the ships databases and systems for those late nights.

    Lifts: The lifts provide quick access from deck to the deck. Lift can also be used to travel to other ships when vessels link together (most Star Army ships have standard gauges of lift systems, allowing lift cars to move from ship to ship).
    Medical and Laboratory: The ship contains a massive, incredibly advanced hospital and laboratory complex. Cutting edge medical procedures, experimentation of all sorts, memory backups, body synthesis, and, if necessary, torture of prisoners can be performed here. The rooms inside and the labs themselves can self-clean and sterilize equipment automatically using a combination of mechanical and nodal processes.

    Passageways: There are many hallways, which run from from the front to the rear of the ship, connected by occasional passageways across and by a system of elevators. Control panels in the halls can give the crew status-updated maps should they need them. The other way of moving from place to place onboard the ship is to use the network of access shafts and crawlways which run the length of the ship. Technicians often hang out in these tubes.

6. Ship Systems
System 	Quantity 	Manufacturer 	Part Number 	Description
Primary Power System 	3 	KFY 	KiP-b2422q 	Superheavy Quantum Generator
Aux Power System 	6 	KFY 	KiP-b2423zp 	Aetheric Generator
Emergency Power System 	6 	KFY 	KiP-b2424ss 	Super Solenoid Generator
Combined Propulsion System 	1 	KFY 	KiE-b2425cq 	SDD/CDD/QSD
Transuniversal Teleportation Drive 	1 	AvaNet 	TTD Type B5 	Transuniversal Teleportation Drive
Anti-Gravity System 	1 	KFY 	KiFRS-b2427ag 	Inertial Redirection System
Anti-Gravity System, Internal 	1 	KFY 	KiFRS-b2428ag(i) 	Force Stabilizer
Radiator Cooling System 	3 	KFY 	KiC-b2429 	Heat Exchanger System

    Hull: The key substance that makes up the 6-foot-thick hull armor of the ship is Zesuaium. The frame of the ship is Zesuaium, and the armor plates are made of Zesuaium coated Yamataium. The ship's windows are made out of special transparent Zesuaium-T which does not block visible light. Zesuaium and Yamataium's main vulnerability is to antimatter weapons.

        Zesuaium-ß: Zesuaium is a nonporous gray substance which does not conduct any form of electromagnetic radiation, including heat and electricity. It neither bends nor breaks, but will remain in a solid piece. The fabrication of Zesuaium takes place factory starships, where a certain substance is molded in the shape desired, and then is transmuted into the fixed Zesuaium form. Each plate of the armor is dotted with millions of tiny connection points (consisting of a porous coating) to allow additional armor and paint to be added. 

        Yamataium-ß: Because Zesuaium armor is difficult to repair, the ship's plating is primarily composed of Yamataium-ß, a SARA-created artificial metalloid with self-healing molecular bonds. Under the guidance of the HSCS-3, the Yamataium can patch holes as needed in a matter of days. Yamataium-ß is made to interact efficiently with the repair systems and bond with Zesuaium-ß.

        Additional Structural Defense Systems:

        Internal Compartmentalization: The ship is sectioned off so that ruptures and fires in one section will not affect other sections. The sections are divided as follows: Weapons booms (2), forward main body (2), rear main body (2), bridge and main computer (1), engine sections (2), forward mecha section and dish (1), rear mecha section (1).

        Ablative Armor (optional): In addition to their Zesuaium-reinforced hull plating, Irim-Class assault ships have the ability to deploy 50cm of heavy armor over the entire hull of the ship, including areas normally exposed such as the CDD, thrusters, and sensors. When the armor takes damage, it flakes away in a controlled manner (ablation), absorbing the destructive force. The armor can then be repaired using hemosynthesis, making the armor self-regenerative. A combined Photonic/Gravitonic field further protects the armor from scalar attacks. 

    Environmental Systems:  

        Hemosynthetic Conduit System: This network, consisting of blood-filled tubes, runs throughout the ship carrying femtomachines. These purpose-oriented molecules are tied to the ship's life support and computer system.  At access points, the bloodstream can hemosynthesize objects, including food and water packages, as well as dissolve objects. A secondary internal network recycles and dissolves waste, and a third, independent HSCS system carries femtomachines through various parts of the ship where repairs are needed, to control damage automatically, even during combat.

        ADN Device: The ADN is a form of psionic and telepathic protection, capable of nullifying all such activity.  The ADN has been in use for over 4500 years, without a great deal of change.  Modern ADN devices can selectively allow channels to permit secure telepathic operation and to maintain communication even under psionic attack.  The Yuumi's ADN devices also negate magical attacks and effects. The ADN is usually on standby, and activates after sensing an attack or unfamiliar signal. Activated ADN's are known for causing weird psychological effects on the ship's crew.

    Kessaku Advanced Mentafexal Intelligence (KAMI)

    Cloaking Devices:  The ship can be rendered invisible to scalar radar, aetheric-energy sensors, subspace mass detectors, other forms of detection by using the TTD to keep the ship in an alternate plane of existence. It is also equipped with an advanced cloaking device which uses scalar fields to simulate that photons and other sensory forms pass through the "empty space" and thus its presence is hidden.

    Computer System, Auxiliary (ACS):  An auxiliary backup in case the KAMI system is damaged, malfunctioning, or deactivated. When the ACS is activated, the computer systems of the TQP-RDD are rebooted in ACS mode, and begin managing vital systems of the ship: Environmental, Power Systems, Propulsion, and Defensive Systems.
    Continuum Distortion Drive: An experimental technology undergoing testing, it propels the ship at speeds many times the speed of light by generating continuum distortions and nesting them to create asymmetric peristaltic fields, using a set of rotary distortion coils.  The normal CDD speeds are augmented by working with the forward deflector to enter a quantum slipstream. This allows the ship to travel thousands of times the speed of light.
    Escape Pods: One hundred and twenty KFY Type KiS-2408es escape pods, each able to hold up to four people, are located onboard, near the engines.  They are capable of sustaining life for 72 hours and contain 36 standard Star Army rations, 72 gallons of water, a WickedArms TA-17 survival kit, and a WickedArms TA-13 field surgery kit.  The pods also have a stasis function, and can support their occupants in stasis for over a century. Each pod contains a homing device, but it must be manually activated. The pods will automatically put themselves into a safe descent if there is a planet nearby (rather than burning up in the atmosphere).

    Graviton Beam Projector (2): This device creates a stream of gravitons which can be used to tow other spacecraft. The projector is ineffective against ships using gravitonic shielding.

    Hydrogen Collection Matrix: The HCM allows the ship to collect hydrogen molecules as it travels through space, which can be used to provide fuel for the continuum distortion drive's quantum power core.

    Lifts: The lift provides quick access from the main deck to the subdeck. The lift can also be used to travel to other ships when vessels link together (most Star Army ships have standard gauges of lift systems, allowing lift cars to move from ship to ship).

    Shield Systems: The Yuumi has an excellent combined defense shielding system, relying on an teardrop-shaped combined spatial and electrogravitational distortion field network to warp space around it and alter the course of lasers, missiles, etc. that are headed for the ship using both dimensional warping and scalar EM interferometry.

        The first and primary shield system is the elliptical dimensional distortion. This system folds space using electrogravitational fields, wrapping it around the ship, to render the craft in its own bubble. Objects inside the bubble are protected from both solid and beam weaponry, because the projectiles or beams pass through the curved space and around the ship.  The shields are auto modulated by the KAMI control system. While all frequencies (and planes) are theoretically covered by the EDD shield, the modulation enables extra power to be routed to the bands in which enemy energy weapons operate, decreasing the possibility of a shield overload and rendering enemy energy weapons effectively useless. The EDD draws its power from the KiP-b2423zp, or, when necessary, the KiP-2422q. The EDD can protect against up to 20 YottaWatts worth of damage (20,000,000,000,000,000,000,000 joules a second) per five-foot area in either kinetic or energy form.

        A second system, officially the FDS (forward deflector shield), but more often called "the spike," only protects the front of the ship, acting as a giant cone.  It protects the ship from collisions during high-speed space flight. The spike adds to the already deadly blade nature of the ship and can be used to facilitate ramming other vessels. As the ship's primary defense against high-speed impacts such as meteors in space, and debris from destroyed starships, the spike is extremely powerful. For this reason, when possible, the ship combines the spike with the EDD shield, providing enough protection to withstand heavy particle cannons and the like. The FDS draws its power from the KiP-b2422q, or when necessary, the KiP-b2423zp. The FDS can absorb twice as much damage as the EDD. 

    Temporal-Spatial Distortion System: Using its TTD and shield systems, the ship generates its own time-space distortion field.  This field serves many purposes, mainly keeping the ship safe from spatiogravitational and temporal attacks.  It operates as a time/space anchor.  The DR device (dimensional retriever) is also built into this system. Gravitational fields outside the shield bubble do not affect the objects inside. The TSDS can also be used to generate subspace waves, which can be used to detect hidden ship and objects when used in combination with the subspace sensors.

    Transuniversal Teleportation Drive:  A of technology that relies on "linked" space, where particles and energy in different locations react simultaneously.  The TTD apparently causes such quantum links and transports the ship instantly to the desired location, usually a different universe. The range of the TTD is unlimited, although teleporting into unknown space is somewhat dangerous. The teleportation drive is produced by AvaNet, the computer-society that inhabits the south islands of Yamatai.


        Legacy Cannon (2):  Superheavy Transposition Flux Cannon units are mounted at angle on the sides of the battleship. These massive weapon units transpose the space between two points, causing the space-time continuum of an area to collapse on itself. This weapon is usually not a first choice as it leaves damage to space which can take weeks or even months for the beam area to "heal." The TFC cannot be fired at the same time as the GWB or the DFCs, since they use the same systems.  Ships using space-time anchors or dimensional screens are particularly affected by the TFC and are almost guaranteed to be dragged out of existence in about a minute by their anchors, even when not directly in the path of the beam (50,000 miles). Deactivating the T/SA or DS will halt the ship's approach to the rift. A TFC can also be used to generate a 20-mile-wide black hole anywhere within its normal firing range. The legacy units have built in engines and systems, and can be ejected. Each legacy cannon has its own dedicated quantum generator.

            Primary Purpose: Anti-starship
            Secondary Purpose: Assault
            Damage: Total Annihilation over a 20-mile wide area
            Range: 20 through 200,000,000 miles (the beam can not hit anything less than 20 miles from the ship)
            Rate of Fire: Once every minute.
            Payload:  Effectively unlimited, so long as the ship provides power.

            Legacy Alternate Function: Directed Fold Cannon (2): This powerful weapon distorts space in much the same way as a hyperspace fold generator does.  However, the fold cannon instead of warping the target to another location, it warps the target into a star, a black hole, or perhaps each molecule of the target will warp to a different locale.  The cannon has a wide variety of alternative uses, such as capturing and moving large quantities of plasma or anti-matter.  It is can even be used to transport other vessels and the firing vessel itself safely. The DFC cannot function if the TTD is disabled, except to transport the frigate.
            This powerful weapon distorts space in much the same way as a hyperspace fold generator does.  However, the fold cannon instead of warping the target to another location, it warps the target into a star, a black hole, or perhaps each molecule of the target will warp to a different locale.  The cannon has a wide variety of alternative uses, such as capturing and moving large quantities of plasma or anti-matter.  It is can even be used to transport other vessels and the firing vessel itself safely. The DFC cannot function if the TTD is disabled, except to transport the frigate.
            This powerful weapon distorts space in much the same way as a hyperspace fold generator does.  However, the fold cannon instead of warping the target to another location, it warps the target into a star, a black hole, or perhaps each molecule of the target will warp to a different locale.  The cannon has a wide variety of alternative uses, such as capturing and moving large quantities of plasma or anti-matter.  It is can even be used to transport other vessels and the firing vessel itself safely. The DFC cannot function if the TTD is disabled, except to transport the frigate.

                Primary Purpose: Anti-starship
                Secondary Purpose: Transportation
                Damage:  Variable (Zero to Total)
                Range: Effectively unlimited (However, the sensors only see so far).
                Rate of Fire: Once every fifteen seconds.
                Payload:  Effectively Unlimited. 

        Projected Energy Beams (6): The aether beam was first developed in Yuumi battleship program and has become a staple of  Star Army weaponry. The spatial distortion around the ship is used to release condensed potential energy from the aether, the ubiquitous sea of energy. By distorting the shield-space, the origin of the beam can be maneuvered around the field bubble, allowing it to be fired from any point on the field system. The subspace effects of the beam make it naturally piercing to distortion-based shields. Please note that when firing, it substantially weakens the shields (At least 3 Yuumi battleships were lost this way).

            Primary Purpose: Anti-Starship
            Secondary Purpose: Heavy Assault
            Damage: Good chance of destroying a non-capital ship in a single hit; a great deal of possibly crippling damage on a capital ship
            Area of Effect: Beam of 1 to 25 meters in diameter.
            Range: Theoretically unlimited except by the beam's speed (1c).
            Rate of Fire: Up to ten five-second blasts every 15 seconds. 

        Weapon Pod Primary Array (100): The ship's hull has panels on the upper and lower hull that can form custom weapon arrays to fight specific enemies.  The weapons take about five minutes to form and usually fire some sort of phased energy pulses.  The weapons are generally in a default configuration if used at all, and are not revealed (via the panels opening) unless combat is imminent.

            Weapon: Transphasic Beam
            Primary Purpose: Anti-Starship
            Secondary Purpose: Anti-Torpedo/Fighter/Mecha
            Damage:  Moderate to Heavy. Very precise.
            Range: 1,200,000 miles
            Rate of Fire: 3 times a second
            Notes: Can be used to intercept incoming torpedoes (or fighters). Shield-penetrating.

            Weapon: Scalar Electrogravitic Pulse
            Primary Purpose: Anti-Mecha/Fighter
            Secondary Purpose: Anti-Missile
            Damage:  Destroys electrical systems, kills life, detonates explosives.
            Range: 500,000 miles
            Rate of Fire: Twice a second
            Notes: Also effective against enemy starships without gravitonic shielding.

            Weapon: Transplanar Phased Pulse
            Primary Purpose: Anti-Starship
            Secondary Purpose: Assault
            Damage:  Very Heavy.  Good for one-hit kills.
            Range: 20,000 miles
            Rate of Fire: Once every 5 seconds.
            Payload:  Effectively unlimited, so long as the ship provides power. Shield-penetrating.

        Weapon Pod Auxiliary Array (100): The ship's hull has a second set of the same panels on the upper and lower hull that can also form custom weapon arrays to fight specific enemies. The weapons are generally not revealed (via the panels opening) unless combat is imminent.  The second array is wired so that it will still provide defense in the event of major power system damage.

            (Same as Primary Array)
            Maximum duration of Aux. array on battery power is five minutes.

        Interphasic Quantum Entropy Field Emitter (1): An weapon originally from the Yuumi-class battleship program, this weapon was developed for use against the Nepleslian Spacy and the pirate raider ships which are prevalent at the edges of Star Army of Yamatai territory; however, it is useful on other ZPE-based ships as well. It works by increasing the amount of random particle/antiparticle pairs which appear briefly then annihilate each other, resulting in a chaotic spread of radiation and disabling of aetheric devices, especially radar such as Scalar Wave Radar, and aetheric Energy Generators. While these fields are in place, aetheric Energy generators onboard the firing ship (the Yui Scout) run at a reduced efficiency. The fields operate in multiple planes, and thus are not effected by most shield systems. The Ick-Fay, as it is called, cannot function if the shields of the ship are not at least partially operable, since the the spatial distortion bubble is involved in distributing the field. 

            Primary Purpose: Anti-mecha/Anti-fighter
            Secondary Purpose: Anti-starship
            Damage:  None (Disables) or if focused, heat radiation/heat damage over a small area.
            Range: 300,000 miles
            Rate of Fire: Once every 15 seconds (effects last for 5 minutes).
            Payload:  Effectively unlimited, so long as the ship provides power. 

7. Vehicle Complement

    Ke-M2 "Mindy" Power Armor (120)
    Ke-T1"Gopher" Shuttle (8)
    Ke-T2 "Kitty" Aeroshuttle (5)

This page written by  Wes Davis and Andrew Willison. Copyright ©2006
Last revised Monday, October 02, 2006 04:14

OOC Notes

stararmy/starship_classes/yuumi-class_battleship.txt · Last modified: 2020/02/08 05:21 by