Designation: Tokugawa-class superdimensional combat fortress (SDF)

I. Names and Disposition:

The ships were recovered from the Tranquility Sea depot upon lunar independence and underwent an extensive refit before serving the Republican Navy.

II. Ship's complement:

• Full crew of 2,500 men
• Naval air group of 1,810 men
• 2 Army regiments of 3,000 to 5,000 men

NOTE: life support capabilities are far in excess of the intended regular complement due to an evacuation capacity requirement of up to 150,000 humans.

III. Dimensions:

Length:	1,120m
Width:	430m
Height:	357m
Dry Mass:	11,225,000 metric tons, operational
Fuel Mass:	1,275,000 metric tons total

IV. Propulsion Systems:

• Main power system: RRG Mk. 15 Reflex furnace array. The power plant of the Tokugawa can deliver up to 104.9 petawatts of power, and can operate at maximum power for up to 94 minutes before overheating and automatic shutdown.
• Maneuvering thrusters (8): Westinghouse LSP-37 fusion-plasma reaction thruster clusters mounted on the main hull; top, sides and bottom halfway forward and aft.
• Reaction-mass thrusters (8): Westinghouse HSP-25+ fusion-plasma reaction thrusters with protoculture energizer. These engines are mounted in the port and starboard engine bays, in two quadruple square banks of four engines each.
• Secondary reaction thrusters (4): Rolls-Royce Sparrowhawk fusion-plasma reaction thrusters with protoculture energizer. These engines are mounted as a quadruple bank in the central engine bay, directly behind the main hull. 
• Anti-gravity system (1): 23 RRG Cyclops anti-gravity pods.
• Spacefold drive (1): RRG Mk12 spacefold. drive This system generates a spherical fold bubble and can transport 30 to 40 subluminal ships in its fold radius.
• Planetary Capabilities: The Tokugawa-class has atmospheric capabilities through its reaction thrusters and anti-gravity system. The ships' lower body has sufficient strength to let the ship land on it. The ship will float in an ocean.

V. Endurance and mobility limits:

• The dry stores endurance is limited to about 16 years; the on-board recycling installations are very extensive, and only incidental biomass losses need to be replenished. Water stores are recycled almost completely. The hydroponics installations on board will provide the crew with a steady supply of fresh foods, and some can even be 'exported' to smaller ships in the fleet.
• The Navy mecha consumables supplies (mainly missiles) are very extensive, and can sustain continuous combat operations for over thirty-six days.
• The Army division consumables supplies are very extensive, and can sustain continuous planetary combat operations for up to thirty days.
• Ship-launched missile magazines will likely last for two major engagements or three to four small skirmishes.
• The Reflex furnace can function for about 30 years at normal usage levels before an energizer rebuild is necessary.
• At full power, the main propulsion systems can produce up to 275 Giganewtons of thrust at a minimal reaction mass efficiency profile, or as little as 12.3 Giganewtons of thrust at a maximum efficiency setting. At lower power levels, these thrusts are commensurately smaller.
• At full power, the Tokugawa-class can achieve a maximum Δ-v of 194 kps at the cruising acceleration of 0.1 gees, a maximum Δ-v of 38.8 kps at the battle acceleration of 1.0 gees, and a Δ-v of at most 10.9 kps at the flank acceleration of 2.5 gees. At lower power levels, these ranges are commensurately smaller.
• The fold systems are not navigationally guaranteed for any single jump beyond 10 kiloparsecs. If longer voyages are required, the ships must conduct multiple fold jumps.
• The maximum sustained atmospheric speed is limited to Mach 3.2. A higher speed can be attained while accelerating to orbit, but this stresses the engines to above their sustainable heat tolerances, and must be limited to orbital ascents. The maximum hover time on the anti-gravity systems is limited only by the protoculture supplies and maintenance requirements.

VI. Weapon systems:

Offensive:

• PB-225 particle beam system. This is a quad-barreled particle beam cannon in a large cubic housing. It resembles a greatly enlarged PB-25. It can deliver 22,500 MJ of particle energy every 6 seconds, with synchronized barrels. Fire rate can be increased by staggering barrel sequence; however, total energy per salvo is divided by the total number of barrels. Maximum effective range is 300,000 km. One cannon is mounted between the command tower and PB-135.
• PB-135 particle beam system. This is a twin-barreled particle beam cannon mounting two emitter housings with rectangular barrels on a pillar-style main housing. It otherwise resembles an enlarged PB-45. It can deliver 13,500 MJ of particle energy every 5 seconds at maximum output, with synchronized barrels. Fire rate can be increased by staggering barrel sequence; however, total energy per salvo is divided by the total number of barrels. Maximum effective range is 300,000 km. One cannon is mounted on the dorsal hull between the PB-225 and RL36* mounts.
• 2 x PB-75 particle beam system. This is a quad-barreled particle beam cannon in a large cubic housing. It resembles an enlarged PB-25. It can deliver 7,500 MJ of particle energy every 4 seconds at maximum output, with synchronized barrels. Fire rate can be increased by staggering barrel sequence; however, total energy per salvo is divided by the total number of barrels. Maximum effective range is 300,000 km. Two of these cannons are mounted on the dorsal hull abeam of the command tower.
• 4 x RL36* particle beam system. This is a tri-barrel particle beam cannon with three barrels protruding from a low lying round turret. It can deliver 8,000 MJ of particle energy every three seconds. Fire rate can be increased by staggering barrel sequence; however, total energy per salvo is divided by the total number of barrels. Maximum effective range is 300,000 km. One of these cannons is mounted on the forward ventral hull, one on the dorsal hull, forward of the PB-135 and PB-225; and one each to port and starboard on the ventral hull amidships, forward of the LT-41 mounts.
• 9 x LT-41 laser turret. This is a large caliber laser cannon mounting a protruding barrel in a low-lying round turret. It can deliver 4,000 MJ of laser energy every 2.5 seconds. Maximum effective range is 300,000 km. Four of these cannons are mounted abeam the command tower, two each to port and starboard; one each to port and starboard on the ventral hull amidships, aft of the RL36* mounts;  two on the ventral centerline; and one aft of the command tower.
• 4 x VLR-5 vertical launch racks. This is a set of five missile silos set into the ship's hull, firing the Skylord or Starlord SLBMs. Each installation loads five missiles ready to launch, and a magazine with 45 reloads, for 200 missiles total. Two of these racks are mounted in the dorsal sponsons amidships; and two in the ventral sponsons amidships.
• 10 x SMS-12 vertical missile launch system. This is a set of two rows of six missile tubes set into the ship's hull, firing the Spacelord or Sunlord SLBMs. Each installation loads twelve missiles ready to launch, and a magazine with 60 reloads, for 720 missiles total. Four of these racks are mounted in the forward hull, dorsal and ventral; and six in the dorsal, side, and ventral sponsons amidships.

Point defenses:

• 20 x Oerlikon PD-4 Point Defense turret. The PD-4 is a quad barreled laser cannon, with an on-mount multi-spectral sensor. Designed for point defense against mecha, missiles and small vessels, the PD-4 delivers 40 MJ of laser energy eight times per second. Six of these cannons are mounted in the forward hull, dorsal and ventral; four in the side sponsons amidships; four amidships, dorsal and ventral, and six around the engines.
• 8 x SPS-12 missile launch racks. This is a �pepperbox� missile launch system for use with the Warhawk and Wareagle missiles consisting of two rows of six launch tubes. This launcher must be manually reloaded; however, the mount can be retracted inside the hull of a ship and reloaded from a storage magazine. Four of these launchers are mounted in the side sponsons amidships; and four around the engines.
• 8 x SPS-18 missile launch racks. This is a �pepperbox� missile launch system for use with the Warhawk and Wareagle missiles consisting of three rows of six launch tubes. This launcher must be manually reloaded; however, the mount can be retracted inside the hull of a ship and reloaded from a storage magazine. Four of these launchers are mounted in the forward hull, dorsal and ventral; and four amidships, dorsal and ventral.

VII. Air group and mecha complement:

Naval air component:

• 3 x Veritech combat wings (384 Veritechs)
• 4 x conventional fighter combat wings (512 aircraft)
• 2 x Strategic/Tactical ('Special Teams') Veritech combat flights (64 Veritechs)
• 2 x Strategic/Tactical ('Special Teams') conventional fighter combat flight (64 aircraft)
• 1 x cargo shuttle auxiliary flight (16 aircraft)
• 1 x personnel shuttle auxiliary flight (16 aircraft)
• 6 x EC-32 Eyrie AWACS shuttles
• 6 x SC-32 Gossamer cargo/personnel shuttles

Embarked Army forces:

• ~5,000 Cyclone Veritech Riders
• or ~1,600 conventional tanks or IFVs
• or ~2,500 Veritech hovertanks
• or ~3,200 Destroids
• or ~4,400 conventional vehicles of all sizes

VIII. Major systems:

• Westinghouse AN/OPY-200 passive electronically scanned radar system.
• Tele-Lite AN/OXC-200 encrypted television communication transmitter and receiver.
• RRG DS-1 Pinpoint Barrier Defense System: Uses four movable disks of force field, conformal to the ship's surface, to repel light torpedo attacks, or particle beam fire. It serves as a back up to the DS-3 system.
• RRG DS-3 Barrier Defense System: An advanced force field system which covers the full four pi steradians around the ship with a faint green force field (or if desired, only part of the ship). This field will stop all solids and directed energy weapons (except lasers through a narrow band). However, excess energy which cannot be shunted from the field will be stored in the main weapons' capacitors. The storage wattage is high but not infinite, and when the barrier overloads the field will discharge the stored energy particles. This discharge will have the force of a high-yield (>45 MT) fusion bomb. However, as the discharged energetic particles' vectors will be away from the field and its generating vessel, the vessel will survive, though it will suffer severe damage to its internal electronics and power systems, and will not be battle-worthy until repairs are made.

IX. Design notes:

The overall history of the Tokugawa-class begins with the original Robotech Defense Forces, who designed the ships. Six hulls were constructed, and assisted the Pioneer mission to find the Robotech Masters. After the end of the Third Robotech War, these craft had been loaned to the Karbarran fleets with much of their armament stripped; when the lunar colonies began their war for independence, Karbarra returned them to the Tranquility Sea depot, now in Republican hands. While most of the smaller ships stationed there were effectively spaceworthy from startup, the Tokugawas were in poor condition overall. A consortium of lunar industries collaborated on the overhaul of the Xerxes; as the commander in chief of the new Republican Navy, Captain Alan Morrell, was requesting a flagship.

The first stage was an intensive structural refurbishment. All of her structural certificates had expired, and numerous defects in the structure had to be corrected. An upgrade to the Xerxes' power plant and main thrusters was performed concurrently, using the Reflex furnace array and fold drives of the cannibalized Izumo and overhauled main thrusters salvaged from all three Tokugawas.

A small number of the original weapons were restored, chiefly the LT-40 and PB-75 (designated PB-80 by the Southern Cross) , although the arrangement was altered. Four newer RL36* turrets borrowed from inactive Shillelaghs were fitted, as well as the uprated PB-135 (an iteration of the PB-90), and the new PB-175 (effectively an enlarged PB-75). The missile armament was drastically increased, by adding a fourth Skylord/Starlord silo system and no less than ten SMS-12 launchers for the Spacelord and Sunlord short-range torpedoes. Point defenses were also boosted significantly; twenty of the new quad barrel PL-4 guns were scattered across the ship, giving increased coverage, as well as SPS-12 and SPS-18 Warhawk/Wareagle SAM launchers for a more effective anti-fighter missile defense.

The Xerxes was a success upon her launch and commissioning in the Republican Navy; indeed, she delivered the finishing blows to the Establishment's Izumo-class fleet tender Varanasi. The Tokugawa and Themistocles followed close behind, as production lines for her arms and thrusters had been organized during the restoration. During the post-revolution period, the Tokugawas were used in defense of Republican member states in the Factionalist Control Zone, leading entirely Republican task forces. None were part of the Able and Baker task forces ambushed in the Zone; but the Themistocles did attack and destroy a number of the Tirolian cruisers and transports that launched the following attack on Allegheny City.

Shortly after the Revolution, designs for a new SDF class were being considered; the most expedient, it seemed to military planners and veteran ship captains, was to continue building Tokugawas. However, Admiral Alan Morrell and the new generation of officers he had mentored during the Revolution wanted a new breed of ship. Lieutenant Commander Irina Selznick, Morrell's XO during the final campaign of the Revolution, headed up a comprehensive research project detailing the effectiveness and capabilities of the three Tokugawa-class vessels. The project found a number of deficiencies that could be remedied by designing a completely new craft. This led to the design of the Julius Caesar-class; however, the new line of ships was directly influenced by the Tokugawa.

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