Yorktown class

## SPACECRAFT CLASS

Class development project patch (Thomas Marrone).

The ***Yorktown*-class** was a type of spacecraft developed by Starfleet as a refit of the *Odyssey*-class. The vessels began entering service in 2410 and served for many years as versatile capital ships of the United Federation of Planets.

## History

### Design

Developed in the aftermath of the Second Battle of Earth, the *Yorktown-*class was a concerted effort by Starfleet engineers to create a new generation of the *Odyssey*-class. Designed alongside the *Sojourner*-class and *Endeavour*-class, the *Yorktown* was an update of the Block II/S *Odyssey* configuration and thus focused on elements necessary to exploration and scientific endeavors.

## Technical information

### Physical arrangement

A refit of *Odyssey-*class hull frames, the *Yorktown-*class used the same basic arrangement common to most Starfleet ships. It was also the refit design that remained closest in layout to its parent class. The vessel was composed of two hull sections: an oval, domed primary hull, and a detachable secondary hull. The forward section of the stardrive hull extended under most of the saucer, retaining most of its length during saucer-separation. Like many designs before it, the two hulls of the *Yorktown*-class could reattach without returning to spacedock. This ability provided for great variety in meeting mission needs and in tactical scenarios.

### Deck plan

Due to the modular nature of the design, there was great variation in *Yorktown*-class vessels outside of core facilities. The following was the layout of essential areas aboard *Yorktown*-class vessels.

### Command systems

#### Main bridge

After reviewing concerns about the cavernous aspects of the original *Odyssey* bridge, Starfleet engineers developed the VAR-2 module. The new design drastically decreased the distance between the command chair and bridge stations and added several consoles and other systems. The new module retained many aspects of the VAR-1, such as the vaulted ceiling, but the footprint of the control center was drastically reduced.

Chairs for the commanding officer and two other officers were placed in the center of the area facing the large viewscreen. Between the command area and the screen, in a slightly recessed area, were the flight control station and the primary tactical station. Imbedded in a raised console that curved behind the command area was the secondary tactical station. To starboard of the command chair, and next to the doorway to the ready room, was the operations station. Two consoles were immediately behind the station along the wall, the first was the auxiliary control station followed by a mission operations console. Behind these consoles was the doorway to the Deck 1 corridor. This was mirrored on the port side by the turbolift. Forward of the turbolift doors was a multi-use console, followed by the secondary and then primary science stations. The entryway to the executive lounge stood beside the primary science console. The aft wall of the bridge, behind the secondary tactical console, was covered by three additional consoles. The center console was a dedicated engineering station, while the other two stations were multi-use.

The ready room main area contained a desk, chairs, a sofa, and basic consumables replicator. A doorway behind the desk led to a small cabin with a single bed. Another doorway next to the desk led into a refresher station and head. The executive lounge occupied a similar space on the port side of the bridge. It contained a table and chairs, sofa, and basic consumables replicator. A doorway in the back of the room led to a refresher station and crew head.

Ramps at the front of the bridge, on both the port and starboard sides, led down to the executive conference room and two turbolifts. The one to starboard was the emergency lift to the battle bridge.

#### Auxiliary bridge

Located on Deck ..., the auxiliary bridge primarily served as the command facility of the stardrive section during saucer-separation scenarios. It could also be used as a secondary central command facility in the event that the main bridge was unusable or inaccessible.

### Propulsion systems

Vessels of the *Yorktown*-class were equipped with one Yoyodyne 47B Matter-Antimatter Reaction Assembly and two Keenser/Pegg Heavy Impulse engines. The primary hull also sported two Inline Flux Secondary Impulse engines for use during saucer separation.

Carrying over from the *Odyssey*-class design, the *Yorktown*-class also included an advanced quantum slipstream propulsion system (QSPS). The slipstream tunneling projector was located forward of the navigational deflector on the ventral hull. The system allowed for *Yorktown* vessels to travel at slipstream speeds exceeding 300 light years per hour for 15 seconds before needing a 2 hour recovery downtime. The dual-neck design connecting the primary and secondary hulls served as waveform attenuators, affording the cruisers improved stability under slipstream.

An Ithra IT-7 Subspace Conduit Access Coil was the core element to the class' subspace conduit propulsion system (SCPS). This device allowed *Yorktown*-class starships to connect to the Federation Transwarp Network and jump to gateways within the network at speeds of 360,000 light years per hour. The system had massive power needs, even more than the quantum slipstream drive. To power the coil, starships had to divert energy from weapon and shield systems. Due to strains on the IT-7 coil, it could only be used once every 20 hours.

### Science and remote sensing systems

Twelve DYN-90 Multi-band Linear Sensor Suites, four Omniwave Passive Sensor Matrices, and a JAWS Active Directional Sensor Array were the initial standard equipment for the class. The JAWS array was located on the ventral hull behind the berth for the captain's yacht.

### Tactical systems

Like its parent class, the *Yorktown*-class was heavily armed and incredibly resilient under enemy fire. The hull was a neutronium alloy reinforced with micro-ablative generators. Based upon technology brought back from the Delta Quadrant by the USS *Voyager*, these generators helped to dissipate energy across the hull and to regenerate damaged portions of the ablative hull coating.

When developing the *Yorktown*-class, designers updated the deflector shield systems to the new Yoyodyne 960-B unified field emitter deflector shield arrays. The three equipped arrays projected unimatrix shields with regenerative, multi-spectrum, covariant, and metaphasic properties around the vessels. Nexus Defense Screens, that protected the crew from the effects of the Nexus and similar phenomena, were also integrated into the shield systems.

Vessels of the class mounted 22 Type-X Annular Confinement Beam-jacketed phaser arrays and a single Type-IX ACB-jacketed phaser bank. The stardrive carried 14 of the arrays, two of which were only usable during saucer separation, with the remaining 8 on the primary hull with the Type-IX. Four Type-XII pulse phaser cannons were mounted along the forward edge of the saucer. A total of six Mk 110 variable-payload fixed-mount launch tubes completed the *Yorktown's* armaments. Four of the launchers faced forward, while the remaining two faced aft. Quantum torpedoes were carried as standard ordnance, but the class also carried a complement of tricobalt devices for the bombardment of heavy targets.

### Auxiliary systems

Including the transporter pad on Deck 1, the *Yorktown*-class featured 11 transporter facilities at strategic locations throughout the ship.

Located aft of the bridge were six compartments for the class' Modular Rapid Deployment System. Each compartment could be used to quickly deploy probes, mines, and other equipment.

### Auxiliary craft systems

#### Berths

The class carried two specialized berths. One, located on the ventral hull behind the QSPS tunneling projector, was for the captain's yacht. The second was for an *Aquarius*-class corvette and was located at the aft of the secondary hull. Both berths were designed to allow crews to easily service and refuel respective craft.

#### Shuttlebay

The sole shuttlebay of the *Yorktown*-class was situated on the aft rim of the saucer section between the primary impulse engines. The entrance was segmented into three distinct shutters for structural integrity and to allow for streamlined control of craft traffic. Docking control sat above the shuttlebay in a facility that ran most of the width of Deck 3.

A small afterdeck outside the shuttlebay doors could also serve as a landing platform for additional craft, although access to them would require using a transporter or environmental suit.

#### Auxiliary craft

The initial standard complement of *Yorktown* starships was an *Aquarius*-class corvette, a support craft, and 35 other auxiliary craft, including 10 workpods, 8 shuttlepods, 13 shuttlecraft, and 4 runabouts. Actual numbers of craft would vary depending on a starship's assignment and mission requirements.

#### Evacuation pods

The *Yorktown* continued to use the same evacuation pods used in the *Odyssey* design. The cruisers carried 448 of the Type A Mark IX Autonomous Survival and Recovery Vehicles (ASRV) and 24 of the Type C Mark XII models, for its cetacean crew. Forty-two of the Type A pods were located in the separation plane between the saucer and secondary hull and could only be launched during saucer separation.

### Crew support systems

#### Medical facilities

The Yorktown-class contained 6 sickbay wards, four of which were housed on Deck 7 with the office of the chief medical officer. The main sickbay was Class G and the other three on Deck 7 were Class E. The two sickbay wards on Deck 27 in the stardrive section were both Class D.

#### Holographic projection system

Holographic projectors were equipped throughout *Yorktown*-class vessels. These allowed for emergency holograms to be quickly activated at any location in a time of need. As such, the starship's computer stored the programs for six Emergency Medical Holograms, six Emergency Engineering Holograms, eighteen Emergency Security Holograms, and an Emergency Command Hologram.

## Gallery

View of the VAR-1 bridge module.The USS *Gheryzan* after its refit into a *Yorktown*-class.
## Appendices

### Connections

**Project groups:** **Union Station** (*Geneva* • *Concorde* • *Presidio*) • **Century Cruiser** (*Springfield* • *New Orleans* • *Challenger* • *Niagara* • *Freedom II* • *Galaxy* • *Nebula* • *Cheyenne*) • **Multi-Mission explorers** (*Brigid* • *Esquiline* • *Palatine*) • **Deep Shadow** (*Eclipse* • *Phantom* • *Scryer*) • **Miracle Worker** (*Scott* • *Daystrom* • *Tucker* • *Gagarin*) • **Aeronaut** (*Mercury* • *Ajax* • *Icarus* • *Shran*)

**Other named classes:** *Aegian* • *Aerie* • *Akula* • *Atlas* • *California* • *Centaur* • *Challenger* • *Cheyenne* • *Constellation* • *Constitution III* • *Crossfield* • *Curry* • *Daedalus* • *Dauntless* • *Excelsior II* • *Freedom II* • *Gemini* • *Glenn* • *Guardian* • *Inquiry* • *Iwo Jima* • *Jupiter* • *Lexington* • *Niagara* • *Obena* • *Okinawa* • *Parliament* • *Perseus* • *Pioneer* • *Ranger* • *Sagan* • *Solanae* • *Springfield* • *Turing* • *Ulysses*

**Auxiliary craft:** *Aero* • Class C • Class F • *Danube* • *Flyer* • *Gondola* • *Kodai* • *Mollard* • *Peregrine* • *Selenic* • Type 4 • Type 5 • Type 6 (Type 6A • Type 6S) • Type 7 • Type 8 • Type 9 (Type 9A) • Type 10 • Type 11 • Type 14 • Type 17 • Type 19 • *Valkyrie* • *Venture* • *Waverider* • *Yellowstone*

**Leadership:** Commander-in-chief • Joint Chiefs • Chief of Starfleet External Affairs • Chief of Starfleet Operations • Chief of Starfleet Research and Exploration • Chief of Starfleet Tactical

**Agencies:** Operations (Engineering • Judicial • Materiel Supply • Mission Operations • Personnel Management • Records Service • Shipyards Operations • Starbase Operations) • Research & Exploration (Science • Medical) • External Affairs • Tactical (Intelligence • Security • MACO)

**Notable units:** Ktarn Fleet • Task Force 77

**Facilities:** Deep Space K-7 • Deep Space K-13 • Deep Space 9 • Masamichi Array • Starbase 45-Keepsake • Starbase 82-Maat • Starbase 234-Beskerm • Starbase 247-Vershina

**Agencies:** Starfleet • Diplomatic Corps • Department of Temporal Investigations • Federation Security Agency

**Facilities:** 40 Eridani A Starfleet Construction Yards • Antares Ship Yards • Beta Antares Ship Yards • Copernicus Ship Yards • Laikan Starfleet Shipyards • McKinley Station • Memory Project • New Aberdeen Shipyards • Proxima Maintenance Yards • Salazaar Shipyards • San Francisco Fleet Yards • TL-9139 Starfleet Maintenance Yards • Tranquility Base • Utopia Planitia Fleet Yards

### Sources consulted

* Yorktown class (cruiser) article at *Memory Beta*.
* Yorktown Science Star Cruiser article at the *Star Trek Online Wiki*.
* "Starfleet's New Odyssey: The Future of the Super-Capital Starship," *TTC Jayce's Navy Interstellar* 244, no. 6 (Stardate 84208.8): 80-89.
* Special Report: "Through the Valley," *TTC Jayce's Navy Interstellar*.
* Yorktown Class Reconnaissance Flagship artwork by Thomas Morrone posted at ArtStation.
* *Star Trek Online Starships Collection* issue 15: "U.S.S. Enterprise NCC-1701-F (refit)."
* Star Trek Online: Yorktown Class Star Cruiser Official Breakdown video by Spacedock.

### Footnotes

1. ↑ Derived from MSD created by h31180y.
2. ↑ Derived from Odyssey Module Blueprint by Wild-Endeavour.
3. ↑ 3.0 3.1 "Starfleet's New Odyssey," *TTC JNI*, 85.