This is a Fan-Fiction on Space Battleship Yamato series.

Space Battleship Spica (宇宙戦艦スピカ Uchuu Senkan Supika) is a vessel commandeered by Lieutenant Commander. While the vessel contains a long history, it was only recently officially commissioned in the year 2222.



While the battleship was first notified to the public in the year 2222 as one of the lead vessel to escort emigration vessel during the Cascade Black Hole incident; the craft was actually built around the same time as the original Yamato, making it unofficially the second space battleship created. At that time, the vessel was under the construction financed by a private sector of the Earth Defense Force in secret as a back up plan, should the Yamato fail. As a result of most of the plan of the Wave Motion Core being fed into the production of the Yamato, much of the information was missing during the Spica's prototype core, which contain up to 76% Human assumption. As some predicted, disaster struck the makeshift hybrid technology; resulting a violent explosion that wiped ninety-three percent of the construction staff. This was quickly covered up as an attack by the Gamilas. Due to the lack of construction crew, the project was on a verge of being scrapped, but the constant threat of Gamilas attacking kept the remaining crew working.

Upon the success of the Yamato mission, the vessel's superstructure was finished, and Shiro Sanada was hired to generate a schematic, which he was told was "upgrades for the Yamato." But the start-from-scrap concept caught his attention. After several years of unwittingly work on the Spica, which gained its name from the binary set of advanced Wave Motion Core powerhouse that energizes the vessel, Sanada learned about the cause of the Tachyon explosion years before. As a result, he left the project and demolished any plans that have yet to receive authorization; although he vow to keep the project in secret.

Scrummage Between Bolar and GalmanEdit

The vessel finally completed and announced to the EDF just a year piror to the incendent where Galman missile plunge into the Sun. Armed with the experiance and knowledge learned from the Yamato, Andromeda, and other vessels - the ship, despite the length of developtment process - becomes one of the most advance man-operated space battleship at the time. Even so, the launch was kept out of public eye for it was considered a prototype test run under the command of Captain Hyrubisen. Despite te given advantage, the ship barely limp back as it was caught between the Bolar and the Galman; which all crew was lost - including the captain, with an exception of seven main crew on the bridge, one being Sukaikyomu.

Given the exceptional skill to fly the wrecked ship back on Earth, Sukaikyomu was offered a two-step promotion to Captain; although he denied and chose to remain as a Lieutenant Commander. Despite this, EDF gave him the commanding role and responsibilities of a captain, while respecting his wishes of retaining his rank and was given a support ship named Kurai Tori.

Cascade Black Hole IncidentEdit

The ship was put out of commission and forgotten for the rest of the time period; although it was rebuilt with the funding given by the private sector. Around two decade later, with the need of vessels to escort emigration vessels, Spica was reintroduced with even more improved featured, including a retractable third bridge - which proved to be ill-fated on the Yamato. With Sanada being the Commander of the EDF, he promptly accepted the Spica, and assign her as the leading battleship of the 22nd Emigration Fleet. But this never occurred as Yamato confronts the SUS and the Cascade Black Hole. Two years into the conflict, Spica joins the front lines and was officially introduced to the public as a "brand new" class. Unlike the Yamato, the recruitment process of the Spica is not limiting to one nation, but from a wide range from all over the world and was led by Sukaikyomu, who is still Lieutenant Commander.

Superficial CharacteristicsEdit

Other than the Yamato, the Spica is the only ship that looks anything remotely similar to a sea-bound battleship. To an unexperianced glance in the distance, the Spica is identical to the Yamato. While they are very similar in many aspects, in truth the differences are equally outstanding.


Like the Yamato, the Spica have only one Wave Motion Gun firing gate, giving it a shark-like bow. Also, there is five main shock cannons on the main deck. The command tower is basically identical to those aboard the Yamato, along with the third bridge. On each side of the command tower is catapults for the Bull Sharks, like the launch area for the Cosmo Zero. Both have delta wings used for atmospheric stabilization and assist take off that extend near the midsection. Perhaps the feature that have the highest connections are the point that both vessels rely on human manual power over automated systems.


On deck, the five shock cannons are three 50cm and two 22cm as opposed to three 48cm and two 20cm of the Yamato. In addition, there is one double barreled 48cm shock cannons located on each side of the Spica where the observation window is located on the Yamato. On each side on the bottom of the ship near the landing hatch is a seams of sliding armor plates used to deploy the Megalodon destroyers. The overall size of the Spica is larger to accommodate greater crew members. While the Yamato got two auxiliary engines, the Spica have four, each doubling in power compared to the original battleship.


Power SourceEdit

The Spica's power source comes directly from the Wave Motion Core.

  • Wave Motion Core: Unique for its time, the Spica have two cores, which gave the ship its name; after the binary Spica stars. For the effectiveness and prevention of wearing out the core, the cores uses the mechanism to rotate around each other, so the energy is shared between the two.
  • Capacitor-Based APU (Auxiliary Power Unit): Unlike the Yamato, which required high amount of energy from an outside source to initially start, the Spica's initial launch done via build up of energy input over time to the capacitor, which eventually gives the Wave Motion Core a powerful surge to aid initial ignition. After the initial run, the APU stores excess energy in its capacitor for emergency uses.


Spica propel through space the same manner as the Yamato and other ships that descend from it by the means of Wave Motion Engine.

  • Wave Motion Engine: The Wave Motion Engine uses the Wave Motion Core to turn the vacuum of space to faster-than-light tachyon particles, which is then highly compressed at high temperature before finally expelling it out through the nozzle. This allows the Spica to reach high speeds and achieve Warp.
  • Auxiliary Engine: Spica have four auxiliary engines as oppose to the Yamato's two. Each of the Aux Engine is located in front of each "corner" of the Wave Motion Engine's nozzle. Due to its larger size, each Aux Engine of the Spica is approximately twice as strong.
  • Directional Jets: Though not powerful enough to move the ship through the atmosphere alone, the Spica's precisely placed directional jets allow maneuverability in space and aid atmospheric stabilization. Some of these directional jets have a small swivel degree to further aid in precise maneuvering. Jets on the bow are primarily used as a retro-thruster to slow the ship's acceleration.
  • Hover Jets: Due to lack of legit landing gear, the Spica utilize hover jets to land vertically. These jets are powerful enough to lift the Spica several hundred feet into the air, enough time to engage the main engines.

Command StucturesEdit

Like all EDF ships that are manned, the Spica have several command structures, the Bridge One and Two on command tower and the Third Bridge on a pylon beneath the ship.

  • First Bridge: Located directly beneath the Captain's Quarters, the First Bridge is primarily used for ship's primary function and is the operation area for most of the ship's main staff, such as pilot, chief weapon officer, chief engineer, etc. Due to the first bridge's importance, the bridge area are heavily armored.
  • Second Bridge: Below the First Bridge, the Second Bridge is primarily for navigation and sensor readouts. Also serves as a control tower that aid vehicle coordination, and is the primary operation area for Chief Tactical Officer and the Navigation Officers. Like the First Bridge, This section is also heavily armored.
  • Third Bridge: Perhaps the laughing stock of the Earth Defense Force, the ill-fated Third Bridge's short life span is significantly increased in the Spica. Being fully retractable, it is no longer a victim of landings and occational crossfire, and for the sake of the crew stationed there, the pylon connecting the bridge to the ship is perhaps the most heavily armored area of the whole ship. At dire situiations, however, the third bridge is also fully detachable. But to make sure that the ship suffer minimum casualties during the procedure, the elevator shafts are reignforced. On the bottom of the third bridge is the Spica's 48cm "Snub-Barrel" shock cannon, which provide short range but powerful defense.


  • Shock Cannons: Like the Yamato and other EDF battleships, the Spica comes with shock cannons, a device made to fire energy beam or projectiles. The Spica's shock cannons come in three sizes: 50cm, 22cm, and 48cm.
    • 50cm - In relative terms, the 50cm cannons are placed in the same proportional location as the Yamato's 48cm cannons. Secondary roles of these cannons are launchers of beacons utilized for Asteroid Ring Defense tactic.
    • 22cm - Like the 50cm, the 22cm is in proportional location of the 20cm cannons of the Yamato; one in front and one behind the command tower.
    • 48cm - The two 48cm cannons are located one on each side of the ship proportionally to the Yamato's observation window.
    • 48cm "Snub-Barrel" - A shock cannon located below the Third Bridge to provide the bridge a degree of defense, the "Snub-Barrel" is nicknamed after its very short barrel, which barely sticks out beyond the gun housing.
  • Pulse Laser Turret: Located on each side on the base of the command tower above the double barreled 48cm shock cannon, the pulse lasers are used as an anti-aircraft and anti-missile guns. Each turret is remotely manned by one gunner in his station deeper within the ship. Four quad barreled turret variants are placed on the corners of the command tower, directly beneath the second bridge. A pair of fully retractable double barreled variant is placed beside the landing hatch and are modified to accept higher power intake and more fluid swivel motors to allow efficient cover fire for vehicle taking off and landing.
  • Torpedo Tubes: Six on each side, three in the bow, and three in the stern; the Spica have a wide line of fire for warhead-based ammunition. The tube, though mostly used for underwater uses due to less effectiveness of energy weapons, can fire energy torpedoes and heavier missiles alike and can be proved deadly in a space conflict.
  • Side Missile Launchers: For lighter warheads, side launchers - like those of the Yamato - are use to launch them. These launchers are particularly useful on "broadside maneuvers."
  • Stack Missile Launcher: Though not needed, as the vessel is created from scratch; the effectiveness of upward firing missile launchers is often underrated. Nonetheless, as proposed by Shiro Sanada, stack missiles was added. Like the Yamato, the stack missile launcher took the shape of a smoke stack. These launchers are periodically used as a flare launchers.


  • Gravitational Magnetic Defensive Field: Inspired by the Comet Empire Gatlantis shield, though significantly less powerful, the defense can withstand up to four impacts from the Wave Motion Gun. However, this feature required high amount of energy, second to the Wave Motion Gun, and the interaction of its usage along with the ship's internal gravity cause major gravity illness. As a result, internal gravity is shut down whenever the field is deployed. Even though it is no where as powerful as the Comet Empire's destructive field, the gravity does have a reach up to 20,000 meters away, and at close range, this gravity is powerful enough to disable most types of delicate equipment.
  • Asteroid Ring Defense: A defense developed by Shiro Sanada during his time contributing to the Spica from his experience aboard the Yamato. As later showed by the Yamato, his idea of using anti-gravity beacons to attract and repel object attached was advanced by the wireless transfer of energy to the ship; as shown first hand during the Yamato engagement with the Gatlantis fleet. This means that if any sort of energy, ranges anything from radiation to kinetic is felt by the sensors, it will convert to wireless electrical energy which is transferred to receptors embedded within the hull. Any excess energy flow will be redirected to the ship's APU. The beacons are fired in clusters on any of the 50cm cannons.
  • Corridor Turret: Strategically placed turrets attached to the ceilings of main corridors of the ship provide defense against invaders that have boarded the Spica. Controlled entirely on an small close-circuit computer system, each is independent from one another, but runs the same basic program; which shifts it algorithm once in a while to deter hackers. It projects concentrated electric bolts, which are deadly to the target and have a chance to arc to nearby objects; making dispatching a group of hostile easy. However, the bolts have no effect to interior armor, as the bolt will just harmlessly disperse across the wall's insulation.


The hangar of the Spica resembles very closely to Yamato, including the ramp landing hatch. The fighters are launched backwards via catapults mounted on the ceiling. Landing is assisted by the higher gravity generated in the hanger, up to 1.7G. Due to the abnormal gravity, all doors leading into and out of the hangar have a "transition chamber" where the gravity is eased up to the destination to prevent gravity sickness. Crew members subjected to constant duty in the hangar wear powered exoskeleton suits to help mobility.

There are twelve vehicle-to-catapult armature joints, connected to a launch rail that loops around the hanger roof. At any given time, four joints can fit into the hanger's launch rail. In this case, as soon as one joint releases the fighter, it will continue on its momentum down the rail and swing up above the hangar, which push the next joint down, ready to connect with the next vehicle. In standard conditions of deploying Cosmo Sharks, the four joints takes three seconds to securely lock themselves to the fighter and lift them up, around one second to launch all four connected fighters, and with the four seconds it requires for the next four fighters to move into the connection area; it takes around eighty seconds to launch all forty Cosmo Sharks, which is just under one and a half minute. Two of the joints can connect together to lift heavier vehicles like the Medic. This also slows down to launch to four seconds. This means per time, the Spica can launch two Medics at the same time, or one Medic and two fighters.


Like most part of the ship, the "Shark" variant fighters for the Spica are developed to overcome problems faced by its multiple predecessors. All are seamless, in another word, the chassis is one piece, a lesson learned during the Yamato's encounter with Gamilas Megnetron waves. In addition, most of the moving parts - including the intake compressor fan - operates on the principle of magnetic levitation (Maglev) to provide frictionless operation. To prevent the fighters from floating off in an event that provides no gravity - such as the activation of the Gravitational Magnetic Field or damage to gravity control - each fighters, except for the Megalodon - are equipped with a powerful ring electromagnet embedded within th landing gear's wheel hub to provide constant contact of the tires with the ground. The electromagnets automatically disengage when the fighter is connected to the catapult.

  • GB-7906 "Mako Shark" - The fastest and most maneuverable fighter variant in the Spica's hangar; used for fast strikes and recon. There are six Mako Sharks in the hangar.
  • BNV-903 "Cosmo Shark" - The only ship that is not named after a real creature, the Cosmo Shark is the Spica's one-man space-superiority fighter, and was created for almost all fighting conditions. As the Spica's primary fighter, there are forty Cosmo Sharks.
  • CHC-26295 "Great White" - The Great White is the Spica's all purpose two-man space-superiority fighter; although it was most commonly used as a light to medium bomber. Less used than the Cosmo Shark, the Great White is still frequently used from mission to mission; due to this reason, fourteen Great Whites are stored within the hangar.
  • YMB-285 "Megalodon" - The biggest "fighter" in the Spica's hangar. The two are kept beneath the hangar floor, the Megalodon actually classified as highly-maneuverable destroyer - which immediately put it up as the most heavily armed fighter in the hangar. It was suggested that it was a distant decedent of the Isokaze-Class Destroyer used prior to the Yamato. Due to its large size, it is deployed by dropping out of the hatch on each side of the ship just before the ramp. The Megalodon is only deployed during heavy combat or as the Spica's escort.
  • JJY-735 "Tiger Shark" - The largest and most heavily armed fighter variant, second only to the mini-destroyer - Megalodon. Due to its high maintenance record, lack of fuel efficiency, as well as horrible maneuverability; the three-man Tiger Shark is only used in desperate combat situation and as a heavy bomber. As the result of heavy armor, its expendability rate is low; as a result, only six Tiger Sharks are kept aboard the Spica.
  • QRYN-00193 "Bull Shark" - A possible seamless decedent of the Cosmo Zero. With only four on board, it have shared its role of its predecessor as a reserved ship for flight leaders. Like its namesake's adaptability, the Bull Shark is deadly in space as well as atmospheric conditions, and a very limited operation in liquid environment from water to liquid oxygen. Like the Cosmo Zero, the Bull Shark is launched by the dorsal swivel catapult. Due to its special role, only four Bull Sharks are kept within the ship.

Other VehiclesEdit

Like other EDF ships, the Spica hangar also have room for other kinds of vehicles not classified as a fighter. These ranges from non-combatant sensor vehicle, the Hammerhead, to dropships such as the Battletank.

  • NCL-692 "Hammerhead" - The Hammerhead is the Spica's mobile sensor suite with extremely long sensor range up to thirteen megameters. The Hammerhead, despite the non-combatant role, is the closest vehicle in this category that is related to the fighter category. It is seamless and most of its physical functions are aided by Maglev. Due to its lack of weapon, which was removed to prevent interference, the ship have a very thick hull and large amount of flares. There are four Hammerheads in the hangar.
  • DP7-0001a "Medic" - The Medic does exactly what its name implies; the Spica's medical vessel. Armed with two pulse laser turret on each side, it is fully capable to defend itself from light onslaught, and its heavy armor can withstand heavy impacts; which it makes up for slower speed. Its medical area can hold up to ten victims, in addition of up to nine medical personnel, two gunners, and one pilot. The Medic is the only vessel on the Spica that is launched forward, as it needs all the momentum it can recieve. There are six Medic vessels within the hangar.
  • J971-AYSB204 "Battletank" - a tank dropship that provide ground support, the Battletank is often nicknamed "Battleship of the Land" due to its large size. The vehicle move around on four independently powered threads; and while airborne, six centrally located hover jets and four forward thrusters. As it is made to combat the ground and its heavy armor, the air travel is relatively slow, but is aided by large wings and its winglet mounted on the back thread. The Battletank have two 10cm tank gun and one 12cm self-propelled artillery nested between them mounted on the front turret structure. Directly behind the tank gun/artillery turret on a higher elevation is a double barreled shock cannon. Located above the shock cannon is the "command bridge" of the tank, or the centralized area of the tank's operation. Each side of the tank have two pulse laser turrets in the space between the front and the back turrets, each of these pulse laser turrets are operated by an independent targeting computer. Since the vehicle is relatively tall, an ingress/egress hatch on top is in inconvenient way to enter and exit the vehicle, instead there are ramp hatch at the back of the tank between the forward thrusters. There is four Battletanks stored underneath the Spica's hanger between the Megalodons, which is raised to the flight deck by an elevator. Due to its large size and heaviness, the tanks are deployed by rolling off the launching hatch and activating the hover jets to slow its descent.

Other FeaturesEdit

Other than the prementioned features, the Spica have several miscellaneous features that makes up a vital role in the ship.

  • Radiation-Suppression Filter: An attempt to prevent irradiated gas to circulate the ship, air vents have specialized filters that activates upon detecting radiation beyond normal level. This technology is developed by an attempt to replicate Iscandar's Cosmic Cleaner D. Over the years, the prototype have gotten smaller, although it is not as efficient in removing radiation as the original Cosmo Cleaner.
  • Sub-Space Sonar: As Yamato discovered, traveling into sub-space is possible. Located within the sensor bulge underneath the ship, just before the third bridge is a sub-space sonar developed by Shiro Sanada after the Gamilas conflict. Upon the installation of the Sub-Space Ballast Tanks, the Sonar becomes a vital navigation equipment when the ship is within sub-space.
  • Ballast Tanks: Like the Yamato, the Spica have multiple ballast tanks located around the ship just beneath the hull for submersing into liquid environments from water to liquid nitrogen. Each tank have four individually powered pumps, so should one of the pumps fail, the other three is still functional.
  • Sub-Space Ballast Tanks: Like its liquid-based counterparts, the sub-space ballast tanks allow the vessel to "submerge" into the realm of subspace. This not only allow the Spica to escape accidental scenario of which the ship is in a dimensional trap, but also give an edge on stealth attacks. However, this is seldom used as the tank is highly inefficient during the submerge and rising process.
  • Plasma Furnace: Within the ship above the hangar is a high-powered furnace which is used to melt asteroids to expose it to mineral ores which can be converted to material for devices. Due to its massive energy intake, the furnace is shut down when not in use.


The Spica holds the crew of 286, nearly three times of that of Yamato. Unlike Yamato's primarily Japanese crew, the Spica contain crew from various countries around the world, and some other Human colonies:

  • 15% from North America
  • 17% from South America
  • 21% from Europe
  • 14% from Africa
  • 18% from Asia
  • 12% from Australia
  • 3% from Mars and other Human Colony

Notable Members:Edit

  • Anakin Sukaikyomu (スカイ虚無 アナキン Sukaikyomu Anakin): Unknown past; Lieutendant Commander
  • William Leonard: Englishman; Chief Navigator/Pilot
  • Sakumaru "Phantom" Yokai (妖怪 サクマル Yokai Sakumaru): Japanese; nicknamed "Phantom" by people that don't speak Japanese; Chief Gunner