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| {{Title|UNSC ''Circumference''}} | | {{Title|UNSC ''Circumference''}} |
| {{Status|Canon}} | | {{Era|HCW}} |
| {{Infobox/Ships | | {{Individual ship infobox |
| |name = ''Circumference'' | | |name = UNSC ''Circumference'' |
| |image = | | |image = [[File:Invasion; Circumference.png|265px]] |
| |caption = | | |class = [[Prowler]] |
| |modules = | | |length = {{Convert|162|m|ft}} |
| {{Infobox/Ships/Individual
| | |engine = Nuclear-fusion core |
| |country = [[Unified Earth Government]]
| | |slipspace drive = [[Shaw-Fujikawa Translight Engine]] |
| |country flag = {{Icon|UEG}} | | |shield gen = None |
| |name = | | |hull = |
| |class = | | |countermeasures = *Ablative baffles |
| |namesake =
| | *Counterelectronic systems |
| |identification =
| | *[[Stealth ablative coating]] |
| |operator = [[Office of Naval Intelligence]]
| | *[[Texture buffer]]s |
| |manufacturer = | | |armament = *[[XEV9-Matos_Nonlinear_Pulse_Cannon]]s (2+) |
| |architect = | | *[[HORNET mine]]s (14) |
| |laid down = | | |crew = 90 crewmen<ref name="page 186">'''Halo: Ghosts of Onyx''', ''page 186''</ref> |
| |launched =
| | |skeleton = 43 crewmen{{Ref/Reuse|page 186}} |
| |commissioned =
| | |role = Infiltration |
| |decommissioned =
| | |firstsight = [[2531]] |
| |fate = Destroyed by enacting the [[Cole Protocol]] on [[2552#August|August 30, 2552]].{{Ref/Reuse|FoR35}}
| | |destroyed = [[2552#August|August 30, 2552]] |
| |status = <!--The current status of the ship if it is still active, and one is known--> | | |battles = [[Fall of Reach]] |
| |captains =
| | |affiliation = *[[United Nations Space Command]] |
| |ai =
| | :*[[Office of Naval Intelligence]]}} |
| |motto =
| | The '''UNSC ''Circumference''''' was a [[UNSC]] [[Office of Naval Intelligence]] [[UNSC prowler|prowler]].<ref>'''Halo: Fall of Reach''', ''page 302''</ref> The ship had a simple circle (a ''circumference'') on its prow where the name would normally be painted.<ref>'''Halo: Fall of Reach''', ''page 313''</ref> |
| |badge =
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| }}
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| |hide-characteristics=<!--leave blank unless you want to hide the characteristics section header-->
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| |nocollapse = yes
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| |type = [[Prowler]]
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| |length =
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| |width =
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| |height =
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| |mass =
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| |power =
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| |maneuver drive =
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| |slipspace drive =
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| |crew = <!--Describes crew counts only--> | |
| |complement =
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| |troops = <!--Describes on-boarded Marine, Army etc ground troop forces-->
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| |hull = <!--Describes hull plate material-->
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| |shielding = <!--Describes shielding--> | |
| |sensors = <!--Describes sensors and whatnot-->
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| |ew = Jamming capabilities{{Ref/Reuse|GoO3}}
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| |armaments = [[XEV9-Matos nonlinear pulse cannon|Pulse cannon]]{{Ref/Reuse|GoO3}} | |
| |aircraft = <!--Describes embarked aircraft and dropships--> | |
| |air facilities = <!--Describes hangars and whatnot--> | |
| }} | |
| '''UNSC ''Circumference''''' was a [[prowler]] operated by the [[United Nations Space Command]] during the [[Human-Covenant War]].{{Ref/Novel|Id=FoR28|FoR|Chapter=28}} It was ultimately destroyed during the [[Space engagements over Reach|space conflict]] during the [[Fall of Reach]], as the victim of the [[Cole Protocol]]'s enactment by [[SPARTAN-II program|SPARTAN-II]] [[Blue Team]]. | |
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| Unlike the [[UNSC Prowler Corps]]' mainline prowler classifications, ''Circumference'' served in its stealth role as part of a unique type of vessel - taking the form of a stealth ship disguised to resemble a sleek private civilian [[yacht]].{{Ref/Reuse|FoR28}}{{Ref/Reuse|FoR35}} These characteristics were reflected in the ship's exterior appearance, alongside its innocuous name - similar to other vessels such as {{UNSCShip|Lark}} and {{UNSCShip|Applebee}}.{{Ref/Reuse|FoR28}} Accordingly, the ship did not have its name painted on its exterior hull, instead simply displaying a circle (or ''circumference'').{{Ref/Reuse|FoR35}}
| | ==Background== |
| | In [[2531]], the ''Circumference'' transported [[SPARTAN-II]] [[Blue Team]] to investigate ''[[Station Delphi]]'' in the [[Groombridge 34 System]]. During the mission, [[Kurt Ambrose|SPARTAN-051]] was abducted to train the [[SPARTAN-III]]s. By [[2552]], the prowler was part of [[Operation: HYPODERMIC]].<ref>'''Halo: Ghosts of Onyx''', ''page 50''</ref> |
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| ==Service history==
| | Prior to, and during, the [[Fall of Reach]], ''Circumference'' was docked at [[Reach Station Gamma]], Bay 9, undergoing final stealth upgrades. In an effort to maintain the secrecy of HYPODERMIC, the prowler was removed from [[Reach]]'s database after an intrusion into the [[ONI]] database by the [[Artificial intelligence|AI]] [[Cortana]].<ref>'''Halo: Fall of Reach''', ''pages 269, 281-282''</ref> This isolation meant that the Station Gamma Dockmaster AI [[Doppler]] was unable to implement the [[Cole Protocol]] on the ''Circumference''.<ref>'''Halo: Fall of Reach''', ''page 302''</ref> |
| ===Mission to Station Delphi===
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| ''Circumference'' was active in UNSC service by [[2531]]. On November 7 of that year the ship was involved in an operation set up by the Office of Naval Intelligence to deploy Blue Team to investigate the decommissioned shipard for potential suspicious activity. Among emerging from [[slipstream space]], ''Circumference''{{'}}s sensors had detected a remote ping of another prowler - though this was dismissed by the ship's navigation officer as an echo from the slipspace jump that had bounced off the moon. Following this, ''Circumference'' detected an inert [[communications satellite]] on the dark side of the moon Station Delphi was orbiting, causing the vessel to target the satellite with a jamming attack and a burst from a [[X23 Non-Nuclear Electromagnetic Pulse Cannon|pulse cannon]]. As the Spartan team's mission progressed, they sent numerous status reports back to ''Circumference'' though the mission ultimately ended in disruption due to the accidental activation of [[Kurt Ambrose|Kurt-051]]'s [[T-PACK]] module at 1000 hours - causing him to be sent flying off into deep space and declared [[missing in action]].{{Ref/Novel|Id=GoO3|GoO|Chapter=3}} | |
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| ''Circumference'' spent the next 322 minutes (roughly 5.3 hours) searching for Kurt following the estimated time his [[MJOLNIR Powered Assault Armor]] would have run out of oxygen, joined by the [[UNSC frigate|frigate]] {{UNSCShip|Tannenberg}} at 1105 hours. Once this time was up, the search was called off due to [[Covenant]] activity in the region. Ultimately, the entire operation had been devised by [[ONI Section Three]] as a ruse to discretely remove Kurt from service to begin the [[SPARTAN-III program]], with ''Circumference''{{'}}s crew seemingly unaware of the plan.{{Ref/Novel|Id=GoO4|GoO|Chapter=4}}{{Ref/Novel|Id=GoO5|GoO|Chapter=5}}
| | This oversight was detected by [[Covenant]] intrusion software, and the Covenant dispatched three frigates full of [[Sangheili]] and [[Kig-yar]] rangers to recover the [[Prowler]]'s NAV database. Three SPARTAN-IIs ([[John-117]], [[Linda-058]], and [[James-005]]) were diverted from defending [[Reach]]'s [[Orbital Defense Generator]]s to prevent this. The SPARTANs were successful, using the weapons of a commandeered [[Pelican]] to destroy the ''Circumference'' and the NAV database contained within. The mission also led to very severe injuries to SPARTAN-058 and the probable death of SPARTAN-005 when his [[T-PACK]] was ruptured by a [[Type-33 needler|needler]] [[blamite|shard]].<ref>'''Halo: Fall of Reach'''</ref> |
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| ===Fall of Reach===
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| ''Circumference'' was still in naval service as of [[2552#August|August 30, 2552]]. At 0400 [[Military Standard Time]] on this day, ''Circumference'' (alongside other similar prowlers {{UNSCShip|Applebee}} and {{UNSCShip|Lark}}) were present within the [[Gamma Station]] space docks orbiting [[Reach]], and were noticed as part of counterespionage operations conducted by [[Cortana]] against [[James Ackerson]].{{Ref/Reuse|FoR28}} In reality, these vessels were assigned as part of [[Operation: HYPODERMIC]] - a top-secret operation being conducted by the UNSC and monitored by [[Codename: COALMINER]] and [[Codename: SURGEON]] to scout out potential operating bases for the Covenant invasion forces. ''Circumference'' and its comrades were docked at Gamma Station to undergo upgrades to their stealth systems, though queries from Cortana's probing were determined by COALMINER to be a risk to the discovery of the ships. Consequently, ''Circumference''{{'}}s ship registry number was scrambled and the ship was completely disconnected from the dock's computer network - resulting in Gamma Station being totally unaware that ''Circumference'' was docked inside it.{{Ref/Novel|Id=FoR30|FoR|Chapter=30}}
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| Consequently, when the Covenant invasion arrived at Reach to begin the [[Fall of Reach|fall of the planet]], Gamma Station's AI [[Doppler]] was completely unable to access ''Circumference''{{'}}s systems and enact the [[Cole Protocol]] - leaving the ship's navigation database unsecured and vulnerable to capture by Covenant forces. Consequently, [[John-117]], [[Linda-058]] and [[James-005]] were dispatched to Gamma Station to deal with the threat and manually destroy ''Circumference''.{{Ref/Novel|Id=FoR34|FoR|Chapter=34}} Aboard Gamma Station, Blue Team were able to successfully reach ''Circumference'', using the [[M370 autocannon]] and [[Anvil-II air-to-surface missile|Anvil-II missiles]] aboard a commandeered [[D77-TC Pelican]] to destroy ''Circumference''. This was followed-up by John-117 manually entering the ship's remains to destroy the navigation database by shooting it with his [[MA5B assault rifle]]. The Spartans then departed Gamma Station, to return to {{UNSCShip|Pillar of Autumn}} - the mission having caused the death of James-005 and the near-fatality of Linda-058.{{Ref/Novel|Id=FoR35|FoR|Chapter=35}}
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| ==Production notes==
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| ===Visual appearance===
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| In the comic ''[[Halo: Fall of Reach]]'', ''Circumference'' is erroneously-depicted as an [[unidentified prowler class]]ification, using artwork of {{UNSCShip|Red Horse}} traced from the motion comic of ''[[The Mona Lisa]]''. At the time, ''Red Horse'' was the only prowler clearly depicted on screen in visual media, and thus used by the artists on the comic as reference. In the original ''[[Halo: The Fall of Reach]]'' novel, ''Circumference'' is described as having been disguised as a private civilian [[yacht]], hence its fairly innocuous name.{{Ref/Reuse|FoR28}} Due to this, this article treats the ship as described in the original ''Fall of Reach'' novel, with the visual appearance in the comic adaptation one of several inconsistencies present in the comic adaptation.
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| ===Length===
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| The original ''[[Halo Encyclopedia (2009 edition)|Halo Encyclopedia]]'' and its [[Halo Encyclopedia (2011 edition)|2011 reprint]] provide a length statistic for ''Circumference'' of {{Convert|532|ft|m|disp=flip|sp=us}}. This figure is intentionally ignored by this page, due to the stat being universally applied to ''all'' prowlers irrespective of class - including other vessels such as the {{Class|Sahara|heavy prowler|}} {{UNSCShip|Dusk}}.{{Ref/Book|Id=Enc11|Enc11|Page=259}} This figure comes from a series of assumptions made by fans on Halopedia during the mid-2000s, which were copied into the ''Encyclopedia'' book wholesale. A statement provided in ''[[Halo: Ghosts of Onyx]]'' states that the construction cradle for a {{Class|Point Blank|prowler|stealth cruiser}} is the same size as a [[UNSC destroyer]]. At the time of ''Ghosts of Onyx''{{'}}s publication, the class of the destroyers was said to be seven metres longer than a [[UNSC frigate]] - with the only frigate in existence at that time being the {{Class|Stalwart|light frigate}} featured in ''[[Halo 2]]'', which was {{Convert|478|m|ft|sp=us}} long based on extracted files.
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| As such, fans placed the destroyer and stealth cruiser at {{Convert|485|m|ft|sp=us}} long. In the same chapter of ''Ghosts of Onyx'' which mentions the destroyer size, it also specifies the construction framework as three times the size of ''Circumference'' - taking this extremely literally gives an equation of 485/3 and a result of 161.66. As such, the length of ''Circumference'' provided in the ''Halo Encyclopedia'' was originally taken from some dubiously-reliable statements originally published on this page, and are now not considered reliable as a source.
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| ==Gallery==
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| <gallery> | |
| File:Invasion; Circumference.png|''Circumference'', as incorrectly depicted in ''[[Halo: Fall of Reach - Invasion]]''.
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| </gallery> | |
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| ==List of appearances== | | ==List of appearances== |
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| [[Category:Prowlers|Circumference]] | | [[Category:Prowlers|Circumference]] |
| [[Category:Corvettes|Circumference]] | | [[Category:Corvettes|Circumference]] |
| [[Category:UNSC ships]] | | [[Category:United Nations Space Command ships]] |
