Izumo Class Super Dimensional Fortress

(Version 1.00 - Last Modified: 05/21/2006)

The construction of the first of the class, the Izumo, began in late 2025 in the Tirol Orbital Shipyards, with the second vessel, the Jerusalem, having its first metal cut three months later. However, due to the depleted state of the shipyards, the involvement of the Invid with the Sentinels and several design changes made after decoding modern Tirolian technologies, construction was halted repeatedly. In 2030, at the time Edwards staged his coup, the Izumo was 70% ready, the Jerusalem 62%. Because of their unfinished state, Edwards pressed neither vessel into service, though all work on the hulls was halted during the REF Civil War. In the last days of Edwards' rein, the Tirolian Orbital Shipyards were gutted and almost destroyed. The estimated repair period 15 years, though limited construction would be possible during that time. All ships under construction were damaged in the disaster. It took the REF two years to clear the debris, negotiate the use of and retool some Kaberran yards. In 2032, the Izumo and Jerusalem were folded to Kaberra for completion. In 2033, a third ship was begun at Kaberra, the Varanasi. Construction went as planned, the Izumo finally completing in 2034, the Jerusalem in 2035, and the Varanasi in 2037. Because of the greatly diminished threat of the Invid and the resulting greater safety of Tirol, construction of further Izumo vessels was delayed in favor of the Ikazuchi cruisers. Not until 2038 did the fourth Izumo class vessel, the Dunhuang, begin construction in the partially operational Tirol Orbital Shipyards. However, due to the still great damage to those yards, and because of the low priority assigned to the ship, she was not ready at the time of the Battle at Reflex Point.

Contrary to their design intention, which was as a strategic asset and guard fleet for the Valivarre system, the Izumo vessels were used in fleet actions. This could be done because there were no longer any forces known to the REF capable of mounting a large attack on Tirol. The existence of the Regis, who possessed more Invid than the Regent, was at that time not confirmed. In the mop-up operations, the Izumo vessels served as fleet flagships, each vessel housing the admiral and staff commanding a number of Task Forces. The Izumo ships were used as production centers and for the heavy assaults.

Three of these vessels, the Izumo, Jerusalem and Varanasi were sent to Earth. The Jerusalem was the flagship of the Jupiter Attack Group and was destroyed along with the rest of its fleet. The other two vessels were part of the Saturn Attack Group and were present at the Battle at Reflex Point. During this battle, the Izumo was destroyed outright in the wake of the Invid departure fold. The Varanasi was so heavily damaged she was declared a constructional total loss and was used for scrap. The fourth ship of this class, the Dunhuang, was still being built during the Battle at Reflex Point and after the battle, it became the flagship for the REF Navy and remained in orbit of Tirol to protect it from possible Invid attacks.

The origin of the Izumo Class Super Dimensional Fortress lies in 2024, after the REF had taken Tirol and the Sentinels campaign had gotten under way. The crippling of the SDF-3 meant that the defense of Tirol and, in the worst case, a possible evacuation of the planet side REF forces, would be difficult to accomplish if the system came under determined attack. At that time, the forces of the Invid Regent were still considered quite capable of launching such an attack, though they were at the moment engaged with the Sentinels. Thus, the Izumo was designed to two specifications: the ship had to carry a Reflex Cannon and it had to be large enough to transport a large fraction of the REF should that be required. The result was the largest and heaviest ship yet built by Human forces, rivaling the Zentraedi Thuverl Salan cuiser in mass. The ships were to begin construction in the Tirol Orbital Yards.

The Izumo design is distantly inspired by the philosophy that yielded the Ikazuchi Class Heavy Cruisers. The main body of the vessel retains the 'brick on its side' shape for much of its length, though it can be divided into two sub-sections: A narrow, aft central section containing the central engines and anchoring the command tower, and an enlarged and heightened forward cannon section. In addition, three additional modules are attached; two connecting by a long plane to the two sides of the central body, directly to the central engine block, and one to the keel. At the front of the sub-bodies the heavy laser cannons are mounted, which, in concert with the main Heavy Particle Cannon in the main body, can bring an enormous amount of fire to bear on the forward arc. In addition, the forward subsection of the main body shields much of the vessel from return fire, and the side bodies shield the aft main body from flanking maneuvers. At normal battle attitudes, the Izumo's vital aft central body is usually only exposed on its top and bottom sides, and only in a very limited way forward of the engine blocks. This all combines (because of the ships' attitude) to make the central section the least vulnerable section of the ship.

The lower body contains the Destroid hangars, as well as many ground forces supplies, to facilitate unloading. The troops are quartered in the other sections of the vessel, and this section has an independent anti-gravity engine block to enable it to make planetary landings. The command citadel is located on top of a tower that rises above the main hull, above the aft central engines. The Flag Bridge is located in this citadel. Hangar decks and crew spaces are distributed through the central and side bodies, though most fighter mecha are launched from the side bodies. This includes eight larger versions of the quick-launch bays first used on the Ikazuchi. There are two large Horizont bays located in the side bodies, just forward of the side aft engine sections. They are closed by a large trapezoidal shutter door in the roof, and capable of a high turn-around rate on the shuttles.

Names and Disposition:

Shipyard Name	Name	Year Commissioned	Notes
CAV-01	Izumo	2034	Part of the Saturn Attack Group, destroyed over Earth in 2038 CE.
CAV-02	Jerusalem	2035	Part of the Jupiter Attack Group, destroyed over Earth in 2038 CE.
CAV-03	Varanasi	2037	Part of the Saturn Attack Group, scrapped over Earth in 2038 CE.
CAV-04	Dunhuang	2039	In Active Service with the REF Navy.

Ship Information:

• Ship Class: Battleship
• Year Commissioned: 2034 CE
• Crew: 6800
• Troops:
  • Air Group: 6800
  • Air Force: 5100
  • Air Corps: 13,000
  • Total: 24,900
• Total Crew and Troops: 31,700

Vehicle Complement:

There are four Alpha Launch Bays on each of the side Hulls, each holds 24 Alpha Fighters, for a total of 192 Alphas.


• Cyclone Complement:

4000	VR-052 Battler Cyclone Cycle
1300	VR-041 Saber Cyclone Cycle
1200	VR-038 Light Cyclone Cycle

• Destroid Complement:

360	MBR-24 Excalibur Main Battle Destroid
360	MBR-27 Gladiator Main Battle Destroid
120	MBR-22 Condor Main Battle Destroid
72	ADR-24 Raider Air Defense Destroid
108	SDR-24 Spartan Space Defense Destroid
12	MAR-00 Monster Mobile Artillery Destroid
8	MAR-20 Little Monster Mobile Artillery Destroid

• Mecha Complement:

  960	VAF-6 Alpha Veritech Fighter
  120	VAF-7S Shadow Alpha Veritech Fighter
  480	VBF-1 Beta Veritech Fighter
  120	VBF-1S Shadow Beta Veritech Fighter
  60	VF-2S Shadow Vindicator Veritech Fighter
  60	VE-1 Intelligence Reconnaissance Valkyrie Veritech
  36	VHT-2 Spartas Hover Tank

• Other Complement:

  20	Horizont Troop Shuttle
  5	GMU-1 Ground Mobile Siege Unit (fully loaded)
  3	YMH-10 Self-Propelled Synchro Cannon
  5	Nuclear Warhead (of each type)
  5	Reflex Warhead (of each type)

M.D.C. by location:

• Heavy Particle Cannon - 20,000
• LC-12 Main Laser Cannons (3) - 5000 each
• PB-45 Particle Beam Cannon Turrets (32) - 500 each
• LT-5 Point Defense Laser Turrets (18) - 150 each
• SLS-25 Vertical Missile Launchers (18) - 200 each
• Retractable Weapon Hatches (76) - 100 each
• Alpha Launch Bays (8) - 1200 each
• Airlock Access Hatches - 100 each
• Main Hangers (2) - 10,000 each
• Hull Connectors (3) - 15,000 each
• Command Tower - 10,000 *
• Main Engines (10) - 10,000 each **
• Maneuvering Thrusters (24) - 500 each
• Hull Regions (200, Central Hull) - 450 each
• Hull Regions (80 on each of two Side Hulls) - 400 each
• Hull Regions (45, Lower Hull) - 400 each
• Hull Regions (20 on each of three Engine Sections) - 400 each
• Main Body (Central Hull) - 100,000 ***
• Side Hulls (2) - 40,000 each
• Lower Hull - 20,000
• DS-1 Pinpoint Barriers (4) - 5000 each
• DS-2 Omni-Directional Barrier - 60,000
  
  M.D.C. Armor Rating - Hull Region: 11
  M.D.C. Armor Rating - Main Body: 19
  Notes:

  *	Destroying the command tower will destroy the command bridge, but the auxiliary command bridge will remain functional.
  **	If the main engines are put out of commission, the ship will be floating dead in space or will crash if the damage occurs in atmosphere.
  ***	Depleting the M.D.C. of the main body will shut down the entire ship, including life support, gravity control, communications, weapons, and engines.

Speed:

• Fold Drive: Uses a Fold Drive with a maximum speed of 10 light-years per hour. The ship's navigational equipment cannot safely execute a fold jump of distances greater than 1 kiloparsec (3260 light-years) and it can only be activated once per hour.
• Sublight: Can travel at up to 20 percent of the speed of light (0.20c) and accelerate / decelerate at a rate of 0.2 percent of light (0.002c) per melee.
• Atmospheric Propulsion: Mach 3 (2235 mph / 3600 km/h), can enter and leave an atmosphere under its own power, but it is not designed for atmospheric flight.
• Maximum Range: Effectively unlimited by drive system, but onboard supplies for the crew and troops will last for six years before the ship needs to be restocked. Water stores were recycled almost completely and hydroponics installations provided the crew with a limited supply of fresh foods.

Statistical Data:

• Height: 1903' (580 m)
• Width: 2044' (623 m)
• Length: 4633' or 0.9 miles (1412 m or 1.4 km)
• Weight: 64.5 million tons (58.5 million metric tons)
• Reactor System: Mk-II Protoculture Reactor with a life span of 40 years.
• Propulsion System: Chemical Rocket
• Gravity System: Internal

Weapon Systems:

1. Heavy Particle Cannon
   The most powerful weapon on the Izumo class, the Heavy Particle Cannon is capable of destroying entire fleets in a single shot, and forced opposing fleets to spread themselves out over a large area to avoid having several ships destroyed in a single shot from this weapon. The cannon takes up most of the forward section of the central hull and uses new Tirolian technology to eliminate the need for the ship to split along a central axis. The cannon needs five full minutes to power up its enormous capacitors before it is ready to fire. The beam itself will last for one full melee round and then the capacitors can begin recharging again. The cannon's strength is equivalent to 60 MT (megatons) of TNT. See Human Ship Systems for more details on Heavy Particle Cannons.
   • Range: 150 miles (241.4 km) underwater, 300 miles (482.8 km) through an atmosphere, and 300,000 miles (482,803 km) in space.
   • Damage: 3D4x1,000,000 M.D. per single blast.
   • Blast Radius: The cannon's beam width is 2500' (762 m) and when used against a planet, it leaves a crater with a diameter of 60,000' (11.4 miles / 18.3 km) and a depth of 6000' (1.1 miles / 1.8 km).
   • M.D.C. Weapon Rating: 100
   • Rate of Fire: The cannon can fire once every eight minutes, but can fire no more then five times per hour.
   • Payload: Effectively unlimited
2. LC-12 Main Laser Cannons (3)
   At the front of the secondary and lower hulls of the vessel are power laser cannons. The laser cannons are designed for anti-ship warfare and are very powerful.
   • Range: 100 miles (160.9 km) underwater, 200 miles (321.9 km) through an atmosphere, and 200,000 miles (321,869 km) in space.
   • Damage: 1D4x1000 M.D. per single blast.
   • M.D.C. Weapon Rating: 24
   • Rate of Fire: Each cannon can fire once every other melee round.
   • Payload: Effectively unlimited
3. PB-45 Particle Beam Cannon Turrets (32)
   This twin-cannon turret is designed to attack large spaceships. Each turret can rotate 360 degrees and has an arc of fire of 180 degrees. Eight are mounted on the upper central hull, two groupings of two turrets are on either side, on top, and on bottom of the side bodies, for a total of 8 on each side body, and an additional eight turrets on the bottom of the central hull.
   • Range: 93.2 miles (150 km) underwater, 186.4 miles (300 km) through an atmosphere, and 186,411 miles (300,000 km) in space.
   • Damage: 2D4x100 M.D. per single blast.
   • M.D.C. Weapon Rating: 24
   • Rate of Fire: Each cannon can fire twice per melee round.
   • Payload: Effectively unlimited
4. LT-5 Point Defense Laser Turrets (18)
   The LT-5 lasers are designed to deliver heavy firepower on very close targets. A double-barreled laser with a round sensor between the barrels, the LT-5 is stored inside the hull, but elevates upwards from under movable panels into firing position. Four turrets are mounted on each side body, two in the lower body, six in the forward section of the central body, and the remaining six are mounted in the aft section of the central body.
   • Range: 1.6 miles (2.5 km) underwater, 3.1 miles (5 km) through an atmosphere, and 310.7 miles (500 km) in space.
   • Damage: 2D6x10 M.D. per single blast.
   • M.D.C. Weapon Rating: 23
   • Rate of Fire: Each turret can fire four times per melee round.
   • Payload: Effectively unlimited
5. SLS-25 Vertical Missile Launchers (18)
   This system replaces the Pepperbox launchers used on old RDF ship designs. This new system consists of two rows of five launch tubes for each missile launcher, this allows for an even higher rate of fire. Four launchers are located near the aft engines, two others are near the bridge, four on each side body, and the remaining four are located in forward section of the central hull.
   • Missile Design: Hughes Warhawk and General Dynamics / Euromissile / BAe Spacehawk Long Range Missiles
   • Missile Type: Anti-Spaceship only.
   • Missile Guidance Systems: Select any one available guidance system.
   • Missile Warhead: Armor Piercing, Fragmentation, High Explosive, Plasma / Napalm, Fuel Air Explosive, Kinetic Energy, Multi-Warhead, Nuclear, Proton Torpedo, and Reflex only.
   • Range: 800 miles (1288 km) in an atmosphere and 935,525 miles (1,505,582 km / 5.0 light seconds) in space.
   • Speed: 2500 mph (4023 km/h) in an atmosphere and an acceleration of 4% of light (0.04c) per melee in space, with a maximum duration in space of 16 melees and a maximum safe speed in space of 55% of light (0.55c).
   • Damage and Blast Radius: Varies with type of missile warhead.
   • Rate of Fire: One at a time or in volleys of any size up to 10 missiles. Each launcher can fire three times per melee round.
   • Payload: 400 missiles per launcher, for a total of 7200 long range missiles.
   • Modifiers: Increase range in space by 25%, but reduce warhead strength by 10%. Automatically hits a stationary target in space, has more advanced targeting equipment that gives a bonus of +6 to strike a moving target, but has a penalty of -10 to strike any target under 500 tons (453.6 metric tons).

Shield Systems:

1. DS-1 Pinpoint Barrier System (4)
   The ship can create four small disk-shaped force fields that can be moved around the ship to block incoming attacks. Each pinpoint barrier is 197' (60 m) in diameter and completely regenerates all damage at the beginning of each melee round. To block an attack, each the barrier must make a successful parry roll, with a bonus of +7. Each barrier can deflect up to 8 separate attacks per melee round. Excess damage caused by a beam or projectile weapon will damage the ship, but excess damage from a missile or a missile volley will be completely deflected. Multiple barriers can be used to block the same attack, but each must make a successful parry roll.
   • M.D.C.: 5000 each
2. DS-2 Omni-Directional Barrier System
   An adaptation of the system first developed on the SDF-1 Macross, the DS-2 Barrier System completely covers the ship in a protective shield. Unfortunately, the ship protected by the shield cannot fire any of its weapons without hitting the shield that is protecting it. The barrier system regenerates at a rate of 100 M.D.C. per minute while it is active and 10,000 M.D.C. per hour while it is inactive. When the shield reaches 0 M.D.C., violently explodes causing 1D4 million M.D. to everything within a 1D4x10 mile area, 1D4x1000 M.D. to everything 5 miles (8 km) area beyond that, and 1D4x100 M.D. to everything 10 miles (16 km) beyond that.
   • M.D.C.: 60,000

Special Systems:

1. Electronic Warfare System
   The ship is equipped with a standard REF EW suite.
   • ECM: 5
   • ECCM: 5
   • EWS Abilities: Attract Tracking Device, Break Tracking Device Lock-On, Generate ECM and ECCM (3 points), Light Target, Scramble Communications, and Scramble Sensor Information.
2. SF-X Shadow Cloaking Device (after 2037 CE refit only)
   Developed alongside the mecha version, the SF-X Shadow Cloaking Device has only one purpose: to prevent any Protoculture emissions from escaping a ship. With an active shadow device, a ship is basically rendered invisible to the Invid's most powerful sensor system and most Invid brains will ignore a target that they can see on their subspace mass sensors, but not on their Protoculture sensors. Unfortunately, the device is not very stable and there is a 50% chance that the device will fail when the ship loses at least 50% of its main body; roll for the first time it is reduced past this point and for each subsequent attack that inflicts at least 1% of the main body's M.D.C. in a single attack or a volley.
3. Cyclone Production Facilities
   The ship contains several cyclone cycle construction facilities. There are two cyclone factories and each factory is designed to be generic and can construct any REF cyclone cycle. At normal production, each factory can produce 150 VR-052 Battler Cyclone Cycles, 75 VF-041 Saber Cyclone Cycles, or 200 VR-038 Light Cyclone Cycles per month. It takes one week to retool a factory from producing one mecha type to a different mecha type. Double rate of production if a factory is at maximum production, but for every month the factory is at maximum production there is a cumulative 5% chance that the factory will fail and require 1D4 weeks of repair before restarting operations.
4. Mecha Production Facilities
   The ship contains several mecha construction facilities. There are two mecha factories and each factory is designed to be generic and can construct any REF mecha. At normal production, each factory can produce 25 VAF-6 Alpha Fighters, 15 VBF-1 Beta Fighters, 10 VF-2 Vindicator Fighters, 30 SF-6 Vulture Space Fighters, 20 VHT-2 Spartas Hover Tanks, 25 ZP-1 Tactical Battle Pods, 20 ZP-2 Officer Combat Pods, 20 Destroids of any type (except the MAR-00 Mk-II Monster Destroid and the MAR-20 Mk-III Little Monster Destroid), 3 MAR-20 Mk-III Little Monster Destroid, and 1 MAR-00 Mk-II Monster Destroids per month. It takes one week to retool a factory from producing one mecha type to a different mecha type. Double rate of production if a factory is at maximum production, but for every month the factory is at maximum production there is a cumulative 5% chance that the factory will fail and require 1D4 weeks of repair before restarting operations.
5. Auxiliary Production Facilities
   The ship contains rudimentary auxiliary construction facilities. There is one auxiliary factory and it can produce 12 SF-7 Shadow Cloaking Devices or 1 YMH-10 Synchro Cannon per month, 1 GMU-1 Ground Mobile Siege Unit every two months, or 1 Horizont Troop Shuttle or Predator Drop Ship every three months. Double rate of production if a factory is at maximum production, but for every month the factory is at maximum production there is a cumulative 5% chance that the factory will fail and require 1D4 weeks of repair before restarting operations.
6. Weapon Production Facilities
   The ship contains several weapon construction facilities. There is one factory dedicated to producing armor and another dedicated to producing infantry weapons. At normal production, the factories can produce 250 suits of armor of any type and 250 infantry weapons of any type per week. Double rate of production if a factory is at maximum production, but for every month the factory is at maximum production there is a cumulative 5% chance that the factory will fail and require 1D4 weeks of repair before restarting operations.
7. Missile Production Facilities
   The ship contains several missile construction facilities. There are two missile factories and each factory is designed to be generic and can construct nearly all missiles used by the REF. At normal production, each factory can produce 750 short range missiles, 500 medium range missiles, 125 long range missiles, 25 cruise missiles, or 1 ICBM per week. It takes one week to retool a factory from producing one missile design to a different missile design. Double rate of production if a factory is at maximum production, but for every month the factory is at maximum production there is a cumulative 5% chance that the factory will fail and require 1D4 weeks of repair before restarting operations. The construction of a missile includes all guidance systems and warheads, although no more then 1 reflex warheads of any type can be built per month and no nuclear warheads can be constructed.
8. Missile Storage
   The ship has storage for a large number of missiles used by all REF ships. Fully loaded, the ship holds 40,000 long range missiles, 10,000 cruise missiles, and 500 intercontinental ballistic missiles. These can be transferred to other REF ships to reload their missile supplies or they can be used to reload the ship's own missile launchers. Transferring missiles to another ship takes about ten minutes for every 100 missiles transferred. Reloading the ship's missile racks takes about 1 melee round to completely reload one missile launcher and up to five launchers can be reloaded simultaneously.

Standard Systems:

1. Life Support System
   The ship has a fully operational life support system that provides fresh atmosphere throughout the ship. The life support system can sustain a maximum of 35,000 people indefinitely or 60,000 people for a short period of time in case of an emergency.
2. Communication Systems
   The ship is equipped with three communication systems. The first is a long range laser system with a maximum range of 100,000 miles (160,934 km), the transmissions travel at the speed of light, but they rely on line of sight, so it cannot communicate with a ship that is on the other side of a solid object. The second system is a long range radio system with a maximum range of 10,000 miles (16,100 km), the transmissions travel at the speed of light, but they are easy to intercept and jam. The third system is a satellite relay system that allows the ship to boost the range of the other communication systems indefinitely by using satellites or other ships to relay the transmission. The ship's communication array can maintain contact with up to 2500 ships simultaneously.
3. Sensor Systems
   The ship is equipped with four sensor systems. The first is the Electromagnetic Detection Equipment that detects other sensor systems at twice the maximum range of their transmitter. The second is a powerful array that uses standard radar waves, which are fairly easy to jam, but it is obvious when the radar array is being jammed. The sensor can track tiny targets at a range of up to 900,000 miles (1,448,410 km), small targets at a range of up to 9 million miles (14.5 million km), medium targets at a range of up to 18 million miles (29 million km), and large targets at a range of up to 27 million miles (43.5 million km) . The third is a Subspace Mass Sensor that uses gravity-based technology to detect target's at real time speed. The sensor can track tiny targets at a range of up to 1.5 million miles (2.4 million km), small targets at a range of up to 15 million miles (24.1 million km), medium targets at a range of up to 30 million miles (48.3 million km), and large targets at a range of up to 45 million miles (72.4 million km). The forth is a Hyperspace Mass Sensor that can detect and track ships that are using a Fold Drive. The sensor can track tiny targets at a range of up to 6 parsecs (19.56 light-years), small targets at a range of up to 30 parsecs (97.8 light-years), medium targets at a range of up to 60 parsecs (195.6 light-years), and large targets at a range of up to 90 parsecs (293.4 light-years). See Human Ship Systems for more details on sensor systems.
4. Targeting Computer System
   Connecting the ship's sensor systems with the weapon systems is the Targeting Computer System. The system is designed to control all of the weapons currently equipped on the ship. This system can track up to 300 targets simultaneously, providing detailed information about the targets from the ships data files. All direct fire weapons receive a bonus of +5 to strike and missiles using non-autonomous guidance systems receive a bonus of +3 to strike. These bonuses are in addition to any previously stated bonuses or penalties.

Combat Summary:

• ECM: 5
• ECCM: 5
• EWS Abilities: Attract Tracking Device, Break Tracking Device Lock-On, Generate ECM and ECCM (3 points), Light Target, Scramble Communications, and Scramble Sensor Information.
• Combat Actions: 8
• Strike: +5 to strike for all direct fire weapons and +3 to strike for all missiles using non-autonomous guidance systems.
• Targeting System: Can track up to 300 targets simultaneously.