Changes

The ''Constitution''-class lineage was launched some time prior to [[2245]], and served as [[Star Fleet]]'s front-line vessels for the rest of the century. <br>The ''Constitution''-class also served as a mighty deterrent to both the [[Klingon Empire]] and the [[Romulan Star Empire]], several times taking part in combat actions which determined the fate of the entire [[Federation]] , if not the [[Alpha Quadrant]] itself.

The most famous In [[2267]], there were around twelve ''Constitution''-class starship was starships in the fleet. These included the ''USS Constellation'', the ''USS Defiant'', the ''USS Enterprise'' (NCC-1701), launched under the command of [[Captain]] [[Robert April]] in 2245. The ''EnterpriseUSS Excalibur'', the ''USS Exeter'', the ''USS Hood'', the ''USS Intrepid'', ''USS Lexington'' gained its reputation during its historic five year mission (2265-2270) under , and the command of [[Captain]] [[James T. Kirk]]''USS Potemkin''.

In late-2268, The most famous ''ExcaliburConstitution'', -class starship was the ''HoodUSS Enterprise'', ''Lexington'', and ''Potemkin'' took part launched in the disastrous testing of the [[M-5 computer2245]], which had been placed in control of the ''Enterprise''. The ''ExcaliburEnterprise'' was severely damaged, with all hands lost. The ''Lexington'' also was brutally assaulted by the Mgained its reputation during its historic five-year mission (2265-5 computer when 2270) under the unit became unstablecommand of [[Captain]] [[James T. Kirk]].

Later that year* In [[2266]], the ''DefiantEnterprise'' responded to was instrumental in preventing a distress call from an unexplored sector of space, claimed by war between the Federation and the [[Tholian AssemblyRomulan Star Empire]]. Shortly upon entering When a Romulan Bird-of-Prey crossed the region[[Romulan Neutral Zone]] and destroyed several [[Earth Outpost Station]]s, Captain Kirk barely managed to outwit the ''Defiant'' crew began experiencing sensory distortion, enemy commander and stop his vessel from returning to [[Romulus]] and insanity quickly spread throughout reporting on the ship. The shipFederation's surgeon was unable to determine what was happening, and eventually the insanity induced by the phenomenon lead the crew to kill each otherweakness.

Three weeks later, * In late-[[Star Fleet2268]] ordered the , ''Excalibur'', ''EnterpriseHood'' to mount a search mission to locate the , ''DefiantLexington''. On stardate 5693.2, the and ''EnterprisePotemkin'' located her adrifttook part in the disastrous testing of the "M-5 computer, lost between universes " which had been placed in a space warp. As a result control of a later [[phaser]] exchange between the ''Enterprise'' and several [[Tholian]] vessels, a hole . The ''Excalibur'' was created through the spatial interphaseseverely damaged, causing the with all hands lost. The ''DefiantLexington'' to dissappearalso was brutally assaulted by the M-5 computer when the unit became unstable.

=== Refit history ===[[Image:Enterprise_bridge_2265.jpg|thumb|USS * Later that year, ''EnterpriseDefiant'' - bridge module in 2265]]responded to a distress call from an unexplored sector of space, claimed by the [[Image:Enterprise_impulse_drive_2265.jpg|thumbTholian|USS ''Enterprise'' - impulse and warp drive in 2265Tholian Assembly]][[Image:Constitution class refit, profile view.jpg|thumb|''Constitution''-refit configuration since 2270s]] From 2254Shortly upon entering the region, or earlier, to 2265 the ''ConstitutionDefiant''-class vessels featured a large [[deflector dish]], a large bridge dome of semi-spherical shapecrew began experiencing sensory distortion, and an antenna spike protruding from insanity quickly spread throughout the [[Bussard collector]] cap on each warp [[nacelle]]ship. The [[impulse drive]] had two exhaust vents in 2254ship's surgeon was unable to determine what was happening, and as many as eight smaller vents in 2265eventually the insanity induced by the phenomenon lead the crew to kill each other.

Sometime between 2265 and 2266 ** Three weeks later, [[Star Fleet]] ordered the vessels underwent ''Enterprise'' to mount a major overhaul: search mission to locate the old deflector dish was replaced by a significantly smaller model''Defiant''. On stardate 5693.2, the spikes on ''Enterprise'' located her adrift, lost between universes in a space warp. As a result of a later [[phaser]] exchange between the Bussard collectors were removed''Enterprise'' and several [[Tholian]] vessels, a smaller bridge dome of flatter curvature hole was installed, created through the aft caps on the warp nacelles were each equipped with a spherical attachmentspatial interphase, and causing the impulse drive now had only two large exhausts''Defiant'' to dissappear.

In 2266=== Refit History ===From [[2254]], the interior passageways were again modified''Constitution''-class vessels featured a large [[deflector dish]], the briefing room was completely redesigneda large bridge dome of semi-spherical shape, and an antenna spike protruding from the overhauled main bridge featured an enlarged [[main viewscreenBussard Collectors|bussard collector]] cap on each warp [[nacelle]]. <br>The [[Impulse Drive|impulse drive]] and upgrades to the had two exhaust vents in [[control interface2254]]s , and station arrangement, but the overall appearance of the bridge remained relatively unchanged as compared to many as eight smaller vents in [[2265]].

The crew quarters of * Sometime between [[2265]] and [[2266]], the vessels underwent a major overhaul: the 2254 configuration had old deflector dish was replaced by a significantly smaller model,<br> the capability of carrying slightly more than 200 crewmembers. In spikes on the 2266 configurationbussard collectors were removed, crew quarters could hold a crew complement smaller bridge dome of over 400flatter curvature was installed, the aft caps on the warp nacelles were<br> each equipped with a spherical attachment, and the impulse drive now had only two large exhausts.

In the late 2260s to early 2270s* The interior passageways, the ''Constitution''-class starships underwent their final major main bridge interior and briefing room were already redesigned sometime between [[2254]] and [[refit2265]] program. The actual refitting took eighteen months of work , <br>and essentially a new vessel intercom system was built onto the bones of the old, replacing virtually every major system. Thus, the ''Constitution''-class continued in service for a further twenty yearsinstalled.

Essential * In [[2266]], the interior passageways were again modified, the briefing room was completely redesigned, and the overhauled main bridge featured <br>an enlarged main viewscreen, and upgrades were made to the ''Constitution''-class' warp systems; the old cylindrical [[nacellecontrol interface]]s were replaced with new angular onesand station arrangement, and also but the overall appearance of the warp nacelle struts were new, bridge<br> remained relatively unchanged as they were connected to the engineering hull much closer compared to the neck than before. The [[engineering hull2265]] roughly retained its original shape – while the original hull was essentially a conical cylinder, the refit was much more roundeddesign.

* The [[deflector]] dish was upgraded, doing away with the "satellite" dish architecture. As for the interior crew quarters of the [[Hull2254]], the most obvious upgrades were configuration had the enlargement capability of carrying slightly more than 200 crewmembers. <br>In the [[shuttle deck]] and [[landing bay2266]]configuration, as well as the addition crew quarters could hold a crew complement of a horizontal [[matter-antimatter reaction assembly]] and a vertical [[intermix chamber]]over 400.

Major changes were made In the late [[2260]]s to the interior of early [[2270]]s, the ''Constitution''-class starships; many new systems were added and existing ones upgradedunderwent their final major [[refit]] program. Summarizing, only the internal structure <br> The actual refitting took eighteen months of work and essentially a new vessel was built onto the saucer and very little bones of the engineering hull and neck may have survived old, replacing virtually every major system. <br>Thus, the 2270s refit''Constitution''-class continued in service for a further twenty years.

* Essential upgrades were made to the ''Constitution''-class' warp systems: the old cylindrical [[:Image:Upgradedconsitutionmodelnacelle]]s were replaced with new angular ones,<br> and also the warp nacelle struts were new, as they were connected to the engineering hull much closer to the neck than before.jpg<br> The [[engineering]]Some refit configurations had [[hull]] roughly retained its original shape – while the warp nacelles rotated 90 degrees and included additional hatches along both sides of original hull was essentially a conical cylinder, the saucerrefit was much more rounded.

== Technical data ===== Physical arrangement ===* The ''Constitution''-class starships were among the first to feature the saucer-engineering hull design, which would later become recognizable for most other [[Star FleetDeflector Dish|deflector dish]] vesselswas upgraded, doing away with the "satellite" dish architecture. The main As for the interior of the [[bridgeHull]] was located on top , the most obvious upgrades were the<br> enlargement of the primary hull[[shuttle]] deck and landing bay, while an emergency bridge was located deep within as well as the sauceraddition of a horizontal [[matter-antimatter reaction assembly]] and a vertical [[intermix chamber]].

Various science labs, numbering fourteen * New also was the installment of the double [[photon torpedo]] launcher with its rectangular housing in allthe neck of the vessel.<br> Also, were located in the primary hull in phaser configuration was changed to channel energy though the class' original configurationwarp core. An officer's lounge and dining area would be located in <br> Furthermore, the [[saucer section]] was considerably extended (almost 20 meters), while the aft superstructure beneath rest of the bridge after surface remained about the 2270s refitsame.

The modular design * Major changes were made to the interior of the ''Constitution''-class allowed for component separation in times starships: many new systems were added and existing ones upgraded.<br> Summarizing, only the internal structure of crisis. The primary the saucer and secondary hulls could separate where very little of the connecting "engineering hull and neck" joined the saucer, allowing either section to serve as a lifeboat if may have survived the other was too badly damaged[[2270]]s refit.

Though not an aerodynamic craftSome refit configurations had the warp nacelles rotated 90 degrees, in emergencies, ''Constitution''-class vessels were able to break orbit and enter a [[Class M]] planet's upper atmosphere (and maintain attitude control while passing through it) for a limited period included additional hatches along both sides of time, conditional on the ship's ability to re-achieve escape velocity.<gallery>Image:USS Enterprise orbiting Rigel XII.jpg|Front view of the Primary HullImage:USS Enterprise, aft view.jpg|Aft view of Secondary HullImage:USS Enterprise over Earthsaucer.jpg|In an atmosphere</gallery>

The chair was mounted on a circular pillar, attached to a rectangular footplate that was directly anchored to the deck, giving it considerable support during an attack. It was designed to swivel on the support so that the captain could turn to any member of the bridge crew. == Technical Data ==<gallery>=== Physical Arrangement ===Image:Constitution class bridge 2250s.jpg|Main bridge of the USS The ''EnterpriseConstitution'' (2254)Image:Constitution -class bridge (2267).jpg|Main bridge of starships were among the first to feature the USS ''Enterprise'' (2267)Image:USS Defiant (NCCsaucer-1764) bridgeengineering hull design, which would later become recognizable for most other [[Star Fleet]] vessels.jpg|Main bridge of the USS ''Defiant'' (2268)</gallerybr>Piloting and navigation functions were carried out at the The main [[Helm and Navigation|helmbridge]] console, was located in the center on top of the roomprimary hull, positioned in front of while an emergency bridge was located deep within the command chair. This panel consisted of three main sectionssaucer.

The central section modular design of the conn panel was fitted with a number ''Constitution''-class allowed for component separation in times of sensor monitor lights, crisis. <br> The primary and was dominated by two main features: secondary hulls could separate where the alert indicator and connecting "neck" joined the [[astrogator]]saucer, which allowing either section to serve as a lifeboat if the other was used for long-range course plottingtoo badly damaged.

The * If an emergency was confined to the [[navigation consolenacelle|navigator's stationwarp engine nacelles]] had a control panel for entering course and heading data and , it was possible to eject them while keeping the flight path indicator, and supplied information on any deviations or course corrections in progress. It also had controls for bulk of the weapons systemsvessel intact.

=== Command and Control Systems ===The computer systems aboard the ''Constitution''-class starship were ' primary command center, the main [[duotronicbridge]] based, was located on top of the vessel's primary hull, on Deck 1.<gallerybr>Image:TPol at Defiant station.jpg|The From here, the [[science stationcommanding officer]] on supervised the entire starship''Constitution''-class ''Defiant''Image:Constitution class bridge consoles operation.jpg|A [[duotronic]]-based [[control interface]]</gallery>

After The [[command chair]] was located in the major refit recessed area at the center of the room, in a direct line with the main viewer. <br>This position was of equal distantance from all the control consoles that operated specific areas of the early 2270sship. <br>Consequently, the bridge aboard ''Constitution''-class vessels would continue to utilize two turbolifts[[captain|Captain]] could be immediately updated on the condition of the vessel or its crew during missions, but both would and orders could be located behind the command chairgiven clearly with a minimum of effort.

[[Image:Constitution class refit bridge 1.jpg|thumb|left|Refit configuration bridge ([[2270s]])]]* The bridge of the Captain''Constitution''-class starships were subject s chair was mounted on a circular pillar, attached to a rectangular footplate that was directly anchored to many minor and major cosmetic changes over their many years of servicethe deck, giving it considerable support during an attack. In particular, <br>It was designed to swivel on the main bridge of support so that the USS ''Enterprise'' seems captain could turn to have undergone considerable changes in appearance over the years. Most notably, its systems were fully upgraded along with the refit any member of the early 2270sbridge crew.

Piloting and navigation functions were carried out at the [[Image:Constitution class refit bridge, 2293.jpg|thumb|leftHelm and Navigation|Refit configuration bridge (2293)helm]]The bridge module had again been replaced by 2293. The lighter color scheme console, located in the center of the original ''Enterprise''-A bridges had made room for a darker, more militaristic lookpositioned in front of the command chair.

=== Propulsion systems ===Other stations on the bridge were provided for [[Image:Enterprise (1701) impulse engines.jpg|thumb|Aft view of an original configuration vesselcommunications]]The ''Constitution''-class of starships has been fitted with both , [[lithiumengineering]] and , weapons control, gravity control, damage control, environmental engineering, [[dilithiumScience station|science]] reactor circuits in the warp drive assembly over its service lifetime. The vessel's standard cruising speed was and [[warplibrary computer]] 6, while its maximum cruising speed was warp 8. Warp 9 was also possible for this class of starship, although it was highly discouraged because it was an unsafe velocityand internal security.

More extensive modifications made to Mounted into the room's forward bulkhead, on the ship by 's centerline, was the main [[Kelvanviewscreen]]s in 2268, who were able to produce velocities that were far beyond the reach of Federation science, allowing . <br>Visual sensor pickups located at various points on the ''EnterpriseConstitution''-class' to safely maintain outer hull were capable of image magnification and allowed a cruising speed varied choice of warp 11 while traveling through the intergalactic voidviewing angles.

The computer systems aboard the ''EnterpriseConstitution'' also maintained stability at warp 22, while tractored to a ship going warp 32-class starship were [https://memory-alpha.fandom.com/wiki/Duotronic duotronic] based.

=== Propulsion Systems ===The ''Constitution''-class of starships was fitted with both [[lithium]] and [[dilithium]] reactor circuits in the warp drive assembly over its service lifetime. <br>The vessel's standard cruising speed was [[warp]] 6, while its maximum cruising speed was warp 8. <br>Warp 9 was also possible for this class of starship, although it was highly discouraged due to it being an unsafe velocity.   The [[USS Enterprise, NCC-1701]] was twice modified to achieve a speed of warp 11. <br>The probe ''[[Nomad]]'' increased the ship's engine efficiency by 57% in [[2267]], allowing the ship to reach warp 11, but Kirk persuaded ''Nomad'' to reverse its "repairs" <br>because the ship's structure could not stand the stress of that much power, and would eventually destroy the ship. * More extensive modifications made to the ship by the [[Kelvan]]s in 2268, who were able to produce velocities that were far beyond the reach of Federation science, <br>allowing the ''Enterprise'' to safely maintain a cruising speed of warp 11 while traveling through the intergalactic void. * The maximum warp speed recorded for this class by itself was warp 14.1, achieved by the ''Enterprise'' due to sabotage to the vessel's [[warp drive]] system. <br>While the ship itself was not structured to take that speed for any length of time, the ''Enterprise'' was able to maintain that velocity for nearly 15 minutes.   === Main Engineering ====[[Main Engineering]] was from where the ship's warp was controlled. <br>All thrust and power systems were primarily controlled from this site, and it is also where the main dilithium crystal reactor was located. <br>Life support was controlled separately from Deck 6.<gallery>Image:Constitution original engineering2.jpg|Engineering in 2266Image:Constitution original engineering.jpg|Engineering in 2268Image:Constitution class refit engineering.jpg|Refit configuration main engineering deck in the 2270sImage:Constitution Engineering.jpg|Upper engineering level on a refit ''Constitution''</gallery>During the 2270s ''Constitution''-class refit, the interior design of the engineering section was drastically upgraded, featuring the vertical [[warp core]] and the horizontal intermix area.

=== Tactical systems ===[[Image:USS Enterprise firing phasers.jpg|thumb|Forward phasers of During the USS ''Enterprise'']][[Image:USS Defiant (NCC-1764) firing aft phasers.jpg|thumb|Original configuration 2270s ''Constitution''-class USS ''Defiant'' firing its refit, the interior design of the engineering section was drastically upgraded, featuring the vertical [[Hull|secondary hull]] aft phaserswarp core]]and the horizontal intermix area. [[Image:Constitution class refit configuration phasers.jpg|thumb|A refit ''Constitution'' vessel fires its forward phasers]]

By 2266=== Tactical Systems ===During the early 2250s, ''Constitution''-class heavy cruisers were armed with a complement of [[phaser bankdirected energy weapon]]s were standard complement aboard this class .<br> In addition, these vessels carried on board [[laser cannon]]s, capable of operating on [[energy]] fed remotely from the ship. A bank actually consisted of a single emitter and its power supply, though it was common practice to fire two banks at a time and refer to it as a single firing.

In the original configurationBy [[2266]], a battery of 4 to 8 forward phaser banks were located on the lower part of the ventral side of the saucer section. Aft firing banks were located above the [[shuttlebayphaser bank]] on the secondary hull. There s were also port, starboard and midship phasersstandard complement aboard this class of ship.

The diversion * Ship-mounted phaser banks had a range of approximately 90,000 kilometers, and like hand phasers, were capable of all but [[emergency maintenance power]] being adjusted to stun, heat, or disintegrate visible targets, <br>including objects or beings in space or on a planet's surface at a focus ranging from narrow to wide beam. <br>When only motion sensor readings are available, a ship's phasers could be set for a proximity blast, and bracket the [[shields]] had approximate coordinates of the adverse affect of reducing phaser power by fifty percenttarget.

* The ''Constitution''-class originally mounted at least 6 [[torpedo launcher]]s, one tube covering the aft firing arc. <br>Forward tubes were located in the same area as the forward phaser banks. The aft tube fired from the end of the secondary hull. This combined arsenal was powerful enough to destroy the entire surface of a planet.

Phaser power was increased by drawing energy directly from After the warp drive. This increase in firepower had a drawback in that refit of the phasers would be cut off if the main reactor was off line. This problem hampered the USS 2270s, ''EnterpriseConstitution'' -class ships mounted three dual-emitter phaser banks on the ventral and three on at least two occasionsdorsal faces of the saucer.<br> Two single emitter aft banks were above the shuttlebay, one in 2272 and again in 2283four mid-ship single emitter banks are located on the ventral surface of the engineering hull.

* The post-refit vessels had two forward firing [[torpedo launcher]]s, though each tube could fire at least two torpedoes before reloading.

=== Transporter Systems ===Extravehicular transporter to and from the ship was accomplished by a number of transporter systems, which allowed personnel or equipment to be transported over large ranges. <br>The transporter platform featured six pads, which were numbered clockwise, beginning with the right front. <br>A redesigned field generator matrix was mounted into the rear wall of the chamber aboard the refit configuration ''Constitution''-class starships.  Aboard the refitted ''Constitution''-class vessels, the transporter operator stood within an enclosed control pod, which had a floor-to-ceiling transparent aluminum panel through which he or she could view the transport platform. This panel served to shield the operator from the effects of any cumulative radiations emitted by the new transporter machinery, a side effect of the more powerful system. 

[[Image:Constitution class refit airlock.jpg|thumb|Airlock staging area in 2272]]Refit Refitted ''Constitution''-class starships possessed a number of airlocks permitting direct physical access to the ship. <br> One was located at the aft of near Deck 1 on top of the saucer section. <br> Two more were located in the lower saucer section, port and starboard, concealed by sliding hull plates.

:''One * The lower two are accessed through staging areas. Four spacesuit lockers line one wall; each containing one suit, providing enough to clothe a standard party of thesefour. <br>A small, locked arms cabinet held phasers; communicators, [port[tricorder]]s, is shown translators, and outerwear were contained in the "Spock walk" sequence. Since nearly every other such airlock has a matching one separate cabinet on the other side of the ship, it is reasonable to assume the presence of one to starboardanother wall.''

These lower two are accessed through staging areas* The next set of airlocks were located on the port and starboard sides of the torpedo bays. Four spacesuit lockers line one wall; each containing one suit, providing enough to clothe a standard party * The final set were located on the port and starboard sides of fourthe secondary hull at the midline. A small, locked arms cabinet held phasers; communicators, [[tricorder]]<br>These airlocks opened into the ship's, translators, and outerwear were contained in main cargo bay. <br>There was also a separate cabinet "gangway"-style airlock on another wallthe port edge of the saucer section.

=== Landing Bay and Cargo Facilities ===The presence of a similar "passageway" visible in the Tholian drydock holding the USS ''Defiant'' suggests that it is a feature original configuration of the pre-refit ''Constitution''-class as wellcarried a standard complement of four Class F shuttlecraft.

Located on the upper surface of the saucer section of the refitted * The refit configuration ''EnterpriseConstitution'' were numerous small hatches used for entrance/egress during extra-vehicular activitiesclass starship featured a new landing bay design. (Kirk, Spock, Decker, McCoy, <br>A wide range of [[Star Fleet]] and the Ilia probe use one of these hatches to leave the ship when they arrive at ''[[V'GerFederation]]''s "core"craft could utilize this state-of-the-art landing facility.)

The original configuration Alcoves on either side of the ''Constitution''-class carried a landing bay provided storage for up to six standard complement of 4 [[Class F shuttlecraftWork Bee]]s, and furnished all necessary recharging and refueling equipment. <br>Additional space was available for the storage of non-ship shuttlecraft.

Alcoves on either side of Just within the landing bay provided storage for up to six standard doors was a [[Work Beeforce field]]sgenerator unit, and furnished all necessary recharging and refueling equipment. Additional space which was available for built into the storage main [[bulkhead]]s on either side of non-the entry area. <br>This field allowed craft to enter the ship shuttlecraft, while at the same time retaining the atmosphere and temperature within the landing bay.

Deck 18, The shuttle hangar had sufficient room for the refit configuration shuttlecraft hanger bay, was situated storage of four craft at the widest point of the engineering hull. Much of the deck consisted of open space, as it was the mid-level of the cargo facility; thirty-two cargo pod modules could be stored in the alcoves lining the forward, port, and starboard sides of the bayany given time.

This deck also housed === Crew Support Systems ======= Medical Systems ====On the vesseloriginal ''Constitution''s lifeboat facilities. These one-man craftclass starships, a [[sickbay]] facility was located on Deck 6, which escaped through blow-away panels in featured an examination room, a nursery, the side of [[chief medical officer]]'s office and a medical lab. <br> At least one other medical lab was located elsewhere on the secondary hullvessel, were provided and was used for those persons were unable biopsy, among other things. <br>Sickbay was considered the safest place to reach be on the primary hull in case of an emergencyship during combat.

=== Crew support systems ======= Medical systems ====On * With the class refit of the 2270s, the medical facilities of the original ''Constitution''-class starships, a [[sickbay]] facility was located on Deck 6, which featured an examination room, a nursery, the [[chief medical officer]]'s office and a medical labstarship were considerably updated. At least one other medical lab was located elsewhere on <br>New micro-diagnostic tables were capable of fully analyzing the humanoid body at the vesselsub-cellular level, and was used for biopsy, among other things. Sickbay was considered offering the safest place to be on physician a total understanding of the ship during combatpatient's status.

With the class refit of the 2270s* Another new addition was a medical stasis unit, the medical facilities of the ''Constitution''-class starship in which patients whose conditions were considerably updated. New microconsidered immediately life-diagnostic tables were capable of fully analyzing the humanoid body at the sub-cellular level, offering the physician a total understanding of threatening <br>could be placed into suspended animation until the patient's statusproper cure or surgical procedure could be established.

On starships of ==== Crew Quarters ====Crew quarters were located throughout the original configurationsaucer section: keeping with [[Star Fleet]] tradition, Deck 5 housed the senior officers' quarters featured two areas, separated partly by a wall fragment. One area was allocated as sleeping area, featuring a comfortable bed, and another as work area, including a desk and computer terminal. Entrance to a bathroom was provided through the quarter's sleeping area. Both areas could be configured to personal preference.

* On ''Constitution''-class the refit configuration vessels of the , these staterooms of the senior officers were composed of two areas which were separated by a retractable, [[transparent aluminum]] partition. The room's entrance opened into quite similar to the living area. A library computer terminal and work desk were provided here. The room's corner circular nookVIP units on Deck 4, normally occupied by with only a dining booth, could be modified at the officer's requestfew differences.

The other half * On starships of the stateroom original configuration, the officers' quarters featured two areas, separated partly by a wall fragment. <br> One area was a allocated as sleeping area, which held featuring a single large comfortable bed that could double , and another as sofa during off-duty relaxation. A transparent door led into the bathroom work area. By the 2290s, crew space was at including a premium, desk and computer terminal. <br> Entrance to a bathroom was provided through the size of officersquarter' quarters was reduced to one large room and crewmen were housed in dormitories with bunk bedss sleeping area.

[[Image:Constitution class original recreation.jpg|thumb|A typical recreation room 2260s]]==== Recreational facilities ====[[Image:Constitution class refit recreation.jpg|thumb|left|Recreation room (refit configuration, 2270s)]]Aboard the original * On ''Constitution''-class starshipsvessels, there the staterooms of the senior officers were at least six recreation rooms, composed of two areas which included [[three-dimensional chess]] and card game tableswere separated by a retractable partition. There was also a [[Recreation <br>The room|holographic rec room]], which was the predecessor of 's entrance opened into the [[holodeck]]living area. Also aboard A library computer terminal and work desk were as [[arboretum]], [[gymnasium]]provided here. <br>The room's corner circular nook, normally occupied by a [[bowling alley]]dining booth, a theater, and a [[chapel]]could be modified at the officer's request.

At ==== Recreational Facilities ====Aboard the front of the room was an immenseoriginal ''Constitution''-class starships, wall-mounted viewing screenthere were at least six recreation rooms. Beneath this There was an information display alcove; five small screens exhibitedalso a holographic rec room, upon request, a choice of pictorial histories. A raised platform in which was the center predecessor of the lower level floor featured a diversity of electronic entertainment[[holodeck]].

[[Image:Constitution class refit lounge.jpg|thumb|Officers' lounge privacy area on a ''Constitution''-class vessel of * On the refit lineage]]===== Officers' lounge =====Located at the stern of Deck 2 aboard the refit configuration refitted ''Constitution''-class starship was the officers' lounge. Herevessels, four huge view ports afforded a spectacular view of the ship's warp nacelles and space beyondrecreational facilities were further expanded.

   == Ships commissioned Commissioned ==[[Image:Constitutions formation, remastered.jpg|thumb|Four ''Constitution''s fly in formation]]