Early battleships of the UNSC

The United Nations Space Command (UNSC) commissioned 120 capital ships in the first two hundred years of its existence, with exactly half classified as battleships. Exact classifications aside, these 120 early battleships laid a groundwork for the interstellar battleships used by the UNSC throughout the next three centuries. 
In the 198 years between the founding of the UNSC and the beginning of the Interstellar Era, the organization commissioned 3 super-heavy battleships, 48 heavy battleships, 11 light battleships, and 60 defense ships. The UNSC inherited 15 active defense ships and 11 incomplete battleships under construction from the United Nations Space Authority (UNSA) in late December 2163. During the Interplanetary War, the UNSC commissioned 13 battleships and 29 defense ships. Between the end of the war in March 2170 and the turn of the century, the UNSC commissioned another 19 battleships and 9 defense ships. In the next 90 years, the UNSC commissioned 29 heavy battleships and 7 defense ships. 
Following the development of the magnetic accelerator cannon (MAC) in the 2250s, the Unified Earth Government (UEG) refused to fund a class of MAC-equipped ships while the UNSC Navy maintained a fleet of more than 50 battleships. Even as the UNSC argued for the need for a class of "big gun" heavy cruisers, the Navy pushed through the completion of several outstanding authorized heavy battleships and defense ships, bringing the fleet total to 86 capital ships. In 2289, UNSC High Command capitulated and ordered the decommissioning of dozens of battleships in exchange for a new MAC-carrying cruiser class and funding for several other outstanding projects. All told, 50 battleships were decommissioned in the Naval Compromise of 2290, though a considerable number were spared from scrapping and were placed in reserve. 
With the exception of a defense ship that was commissioned in 2290, the UNSC would not build another battleship until the Interstellar Era and the Inner Colony Wars, when the UEG authorized the construction of the Slipspace-capable Protector-class light battleships in 2387. The 37 interplanetary battleships that survived the Naval Compromise were mostly decommissioned by the 2390s, with just 3 still active in 2400. The last of the interplanetary battleships, the Ajax of Sol, had become the ceremonial flagship of the UNSC Home Fleet in the 2350s and remained in service during the years of the Insurrection and the later Human-Covenant War. Following the defeat at Reach in August 2552, the UNSC Navy ordered the reactivation of all surviving interplanetary battleships still in reserve; when the Covenant invaded the system in October 2552, the old battleships of the Interplanetary Era were amongst the UNSC Fleet that moved to challenge the invaders. 
==History==
===The Stalwart Dawn Project===
The first space battleship proposals to receive serious consideration were the Stalwart Dawn project designs of the 2050s. The Sol Defense Force, a space construction and defense think tank founded in 2037, sponsored the development of several hypothetical space battleships for the protection of the colonies then in development. Seven designs were selected as the most promising, though the exact criteria of the think tank for determining this was never fully divulged publicly. Ranging in size from 660 meters to 7,500 meters in length and carrying an assorted arsenal of anti-ship missiles, naval artillery of a bewildering variety, gun- and missile-based point defense systems, and a spectrum of prototypal or theoretical space weapons, the Stalwart Dawn battleships provided a conceptual basis for future designers to drawn on. None of the designs were ever taken up for development. 
Of the seven concept designs, #4 and #7 were the most well-received within naval architect circles. Stalwart Dawn-IV was an 850 meter battleship with missiles, artillery batteries, and point defense guns; the battleship was clad in heavy armor plate and relied on powerful engines and a large reactor. The design eschewed special weapon systems and multirole capabilities in favor of reliability. Stalwart Dawn-VII, by contrast, was a 1,200-meter-long battleship with an arsenal of missiles and no batteries or turrets. Huge engines and two reactors provided tremendous thrust. The design limited its armor plating severely with the exception of its missile silos and engineering spaces, resulting in a high-speed missile battleship that could be deployed rapidly to distant theaters. 
===Earth One===
As colonization efforts continued throughout the system under the oversight of the United Nations Office for Outer Space Affairs (UNOOSA), concerns about the safety and stability of the colonies grew rapidly. The lack of any means to intervene meaningfully contributed to fears already fuelled by works such as Rising Tide: The Danger of Solar Conflicts to Come and The War of Tomorrow; in 2062, the Security Council ordered the UEG to construct a dozen military spaceships for the purpose of protecting the colonies and maintaining stability. After five years of development, the UEG contracted the Advanced Space Construction (ASC) Corporation to begin construction of 12 security enforcement ships. While smaller than contemporary colony terraforming ships and transports, the new class would measure 860 meters and carry an arsenal similar to that of the Stalwart Dawn-IV: 60 missile silos, 8 batteries of naval artillery, and 18 point defense guns. The class would feature a reinforced interior and be clad in heavy armor plating. The first of the twelve entered service in 2173. 
The class was initially given bland names by the UNOOSA in relation to their intended area of service - Earth One, Jupiter One, and so on - and was provided a designation of "UN security enforcement spaceship". When the class was transferred to the UNSA in 2080, the new Authority officially designated the class as the Earth One defense ships and renamed each ship by a poll of then-serving crew members. Only the lead ship chose to maintain its old name, with the rest donning the nicknames they had already acquired during the service, like Aries, Guardian, and Fortress of Sol. All twelve would remain in service and see action during the Interplanetary War under the banner of the UNSC. 
While the UNOOSA only ever referred to the class as Security Enforcement Ships, and both the UNSA and later UNSC described them as Defense Ships, commentators and politicians alike described the class as battleships as early as 2070. Even after the introduction of larger cruisers in 2120s and 2140s, and the commissioning of the official battleships in the 2160s, public discourse continued to refer to the Earth One-class and other defense ships as battleships. 
===UNSA additions: The Three Brothers===
Following the completion of the Earth One-class in 2078, the UEG had considered authorizing additional defense ships for regional security. While the existing ships were sufficient for interventions and deterrence operations, the UNSA was in favor of localized guard ships for specific colonies such as Luna, the moons of Mars, and several of the larger asteroid colonies like Ceres, Pallas, Juno, and Vesta. The UEG refused to authorize another class of defense ships and instead authorized individual ships on a case-by-case basis. This approach led to the Three Brothers: Apollo in 2085, Sentinel of Phobos in 2109, and Drake of Deimos in 2116. Following the completion of the Drake of Deimos, the UEG rejected further defense ships designs on the basis that the Authority now possessed sizable numbers of destroyers that could regulate and defend the colonies of the belt. Further battleship development would come from the national projects and not the UEG or the Authority. 
===Unrealized designs: 2117 to 2152===
No battleships were ordered for the 35 years between 2117 and 2152; the UEG forbade the UNSA from even contracting firms to design hypothetical battleships. This prohibition on concepts did not extend beyond the Space Authority, however, and many agencies and firms developed extensive libraries of battleship designs, often at the behest of UN member states. Of the more than a hundred known projects, most had little overall impact of note on the development of future battleships and were little more than flights of fancy by their creators. Twelve proposals were recognized as being historically relevant to battleship development by UNSC Director of Naval History Dr. Quentin Cadwallader in 2245. 
Following the Cruiser Moratorium of 2120, a trio battleship concepts made the rounds in naval conferences: Enforcer in 2121, Regulator in 2124, and Chariot in 2129. All three were the creation of prolific spaceship designer Leland Kane Iverson, who published the designs under the pseudonym Weston Wallace. Each design featured powerful engines and arsenals of missiles, with a variety of armor plating; these battleships were envisioned as travelling at high speeds and engaging foes at enormous distances with long-range anti-ship missiles. 
The 2130s saw a flurry of designs, but five achieved considerable notoriety for their apparent viciousness: Devastator in 2133, Conqueror and Stronghold in 2136, Solar Sovereign in 2138, and Tsar in 2139. These designs featured heavy plate armor and enormous arsenals and were considered to be based on a philosophy of "peace through firepower". The largest design, that of the 7,000 meter Tsar, would have carried more missile silos than the combined arsenals of the entire UNSA fleet at the time. 
Following the development cycles of the 2120s and 2130s, the 2140s were dominated by new cruiser construction while battleship designs faded into the background. Nevertheless, a quartet of vastly differing projects rose to some notoriety during the decade, these being the Brandenburg, Majestic, Charles Martel, and Leveler. 
The Brandenburg design first appeared in 2140, two years before the completion of the heavy cruiser Enterprise; spanning an impressive 1,800 meters and carrying both an arsenal of missiles and extensive point defenses, the Brandenburg eschewed heavy plate armor for maneuverability and speed. Development under the auspices of the industrial BRVK Group, the Brandenburg was self-described as a corporate battlecruiser and was loosely conceptualized as a vehicle of enforcement and security, one that would patrol the Belt and maintain stability and safety. 
Shortly after the commissioning of the Enterprise, the first of the known Majestic battleship schematics were revealed during a naval conference on Luna. The Majestic battleship featured an extensive array of conventional weapon systems as well as mounts for experimental laser weaponry, as well as explicitly being intended to carry nuclear weapons. A quintet of reactors powered the 2,600-meter-long battleship's armored bulk. Some versions of the Majestic design apparently featured hanger bays for onboard fighters and bombers, as well as sizable troop compartments, either for boarding operations or occupations. While some elements of the Majestic would eventually be incorporated into future battleships, these characteristics were hardly deliberately drawn from the overtly complex design. In the words of Dr. Cadwallader, the Majestic was simply "too ambitious by far" for its own good. 
In 2145, the most promising battleship design of the decade was completed in the New York City offices of North American Superior. Nicknamed the "Hammer of Tomorrow" and designated as the Charles Martel, the 1,660 meter battleship was clad in heavy plate and featured a sizable but reasonable arsenal of missiles, guns, and point defenses. Unlike most of its contemporaries, the Charles Martel design underwent considerable practical reworking over the next five years and reemerged in 2150 as the first super-heavy cruiser to be ordered, now bearing the name Charlemagne. 
The last battleship proposal to achieve significant interest was that of the Leveler in 2147. First described in late 2146 before being presented in June 2147, the Leveler carried tremendous batteries of naval artillery and dozens of silos of missiles, all for the specific purpose of orbital bombardment operations. The Leveler, sometimes called a bombard, effectively discarded anti-ship weaponry beyond a few token point defense systems and ten anti-ship missiles and focused entirely on the destruction of ground targets. Ultimately impractical for obvious reasons, the Leveler design nevertheless reinvigorated the discussion of the planetary bombardments and assaults on terraformed worlds. 
===Midcentury changes: Armstrong, Charlemagne, Deep Tranquility, and Vanguard===
The 2150s witnessed the start of construction of four powerful spacecraft that built on the designs and advancements of the last eighty-eight years: the heavy battleship Deep Tranquility, the light battleship Armstrong, and the super-heavy cruisers Charlemagne and Vanguard. Only the Charlemagne was completed before the Interplanetary Conflict, entering service in 2157 alongside the UNSA's first converted heavy carriers. 
===From the Jovian Crisis to the Battle of Mars===
====Shots fired in anger: the Jovian Moons Campaign====
When violence exploded throughout the Jovian Moons on March 2, 2160, four battleships were present in Jovian Space: Fortress of Sol, Watchguard, Watchkeeper, and Watchtower. All four battleships were quickly involved in anti-piracy operations to protect commercial cargo ships and passenger liners, with the Watchman aggressively intervening in an ongoing attack within the first hour of the Jovian Crisis. The action of the Watchguard, the first instance of a battleship firing its guns in anger, set the tone for UNSA regional operations. Would-be raiders were totally incapable of challenging the firepower of the battleships, and the presence of a single battleship effectively inhibited attacks on any convoy in its proximity. 
UNSA battleship operations during the Jovian Moons Campaign were confined to regional security; at no point were planetary bombardment operations ever considered. The Fortress of Sol was redeployed to the Trojans in late May 2160, with Frieden raiders based in the Trojans ceasing all activity shortly thereafter. When the Campaign ended in late June, both the Fortress of Sol and the Watchtower conducted a series of patrols in the Trojans from July to September before returning to Jovian Space proper. While ultimately ineffective, this brief showing of the flag and the impressive firepower of the battleships that flew it did discourage Frieden operations in Jovian Space for more than a year. 
====Battle of Vesta====
Neither the Celestial Citadel nor the Star Castle were available to take part in the fighting in the vicinity of the 4 Vesta Colony after its occupation in early August 2161. However, the Celestial Citadel was underway to the colony when its captain was informed of a suspect group of freighters on a similar route; the Celestial Citadel thereupon turned about and moved to intercept this suspicious convoy. The convoy of twenty-seven cargo liners were indeed carrying anti-ship missiles and several hundred additional Frieden militia members, a fact that was confirmed by captured documents on Ceres in 2168. Faced with the imposing bulk and firepower of the Celestial Citadel, the convoy abruptly turned back on August 18 and broke up before coming within range of the battleship's missile systems. Further reinforcements were prohibited when Nadja Mielke publicly disowned the occupation of 4 Vesta. The Celestial Citadel arrived at Vesta on August 23, and was present when the UNSA declared the colony liberated on August 29. 
===="Bitter, agonizing helplessness": the Inner System Crisis====
*"Bitter, agonizing helplessness": The Inner System Crisis 
*July 2162: Hazard enters service
====Frieden phantoms====
*The Frieden phantom battleships of 2163
*"Prepared for the terrible eventuality": the Ares proposal
====Fall of the Martian Moons====
*Prelude to Armageddon: Occupation of Deimos and Phobos
===The Interplanetary War===
*War Era designs and orders
====The great test: battleships against the foe====
=====Battle of the Martian Moons=====
*Battle of the Martian Moons
=====SUPREMACY and the Jovian Action of 2165=====
*Operation: SUPREMACY and the Jovian Action of 2165
*Expensive Lessons and Consequences
**The Thunder from the Heavens is ordered 
=====Battleships against the Trojans, 2165 - 2169=====
*Battleships against the Trojans, 2165 - 2169
=====Jovian Storm: The Europa Whirlwind=====
*The Europa Whirlwind
*The Oblivion's Approach is ordered 
=====Unequaled and Unchallenged: Battleship Ares=====
*Arrival of the super-heavy battleship Ares
*Public reactions and Frieden response
=====Battleships in the Belt=====
*Battleships in the belt: Ceres and Juno
*Cererian Retribution: building the Sword of Ceres in under 14 months
=====The Trojan Offensive of 2170=====
*The Trojan Offensive of 2170
*Battle Group India
===Post-war battleships===
====Victory and Vindication====
====Valkyrie experiments====
====Hesperus, Tigris, Fusilier: Advent of the big gun====
*Hesperus trials
*Tigris trials and Tegethoff rumors
*Fusilier trials and the future of the fleet
===Loggerheads: The Budget and Doctrine Dispute===
*The Admiralty versus the UEG
====Veneration and the Long Patrol====
===Naval Compromise of 2290===
*The Naval Compromise of 2290
*Decline of the battleship armada and rise of the big gun cruisers
===UNSC battleships in the 24th century===
*UNSC battleships in the 24th century
*Battleships become interstellar (2387 - 2394)
**Inner Colony Wars and the Protector-class light battleships
*What the future holds: Sovereign, Atheling, Royal Oak, Bonaparte, Centurion, and Resolution 
===Last of the old guard===
*Last of the old warriors: Ajax of Sol (2412 to 2550)
===The Guard Returns: The Defense of Sol===
*The decline of the interstellar fleet and the growing demands to defend the home system
====SOLAR RESILIENCE and IRONCLAD REGATTA====
*"The specter of a coming storm" (2550 - September 2552)
**2550: 9 battleships reactivated: Ares, 4 x Veneration-class (Tobias Li, Doyle-Tereshchenko, Theodore de Lange, and Solomon Yeung), and 4 defense ships (Chateaurenault, Borodino, Seydlitz, and Vengeance of Europa); all but Ares are commissioned within the year (modernizing Ares takes until February 2552).
**2551: 11 battleships reactivated: 5 x Veneration-class (Otto Braam, Henri Durand*, Viraj Patel, Ellen Barach-Garcia*, and Alphonse Joseph Gauthier*), Eclipse, and 5 defense ships (Rurik, Iliad, Foe Hammer, Derfflinger, and Tegethoff). 
**January - July 2552: 17 battleships reactivated: 6 x Veneration-class (Sarah Hayes-Singh*, Alexander Liang*, Alexei Saburov*, Kim Phuc Nguyen*, James Alexander*, and Edmund Wolfe*), Quarrelsome, Stalwart of Heaven, Sound of Thunder, and 8 defense ships (Upholder, Battle of Agincourt*, Gibraltar, Fields of Verdun, Fire and Sword, Grenadier, Vendetta, and Durendal)
*Once More Into The Breach: "The old soldiers against the foe" (October to November 2552)
====Project: FUSILLADE====
*August 2552: 7 battleships reactivated: Preeminence, 3 x Veneration-class (Zuzanna Mazur*, Emil Nowak-Anders*, and Matthias Ward*), and 3 defense ships (Swiftsure, Monarch, and Storm Warning).
*September 2552: 7 battleships reactivated: 2 x Veneration-class (Truong Son Nguyen*, Slobodan Aleksov*, and Empress) and 5 defense ships (Saratoga, Shockwave, Hercules, Sword of Ceres, and Royal Oak)
*October 2552: 5 battleships reactivated: 1 x Veneration-class (Ascension), Deep Tranquility, Peacemaker, and 2 defense ships (Dragon and Drake of Deimos)
====Defense of Earth====
====Battle of Mars====
====Outer system actions====
*The Guard at the Jovian Moons
*The Defense of the Trojans
====Wrath of the Old Guard: The December Offensive====
==UNSC classifications==
UNSC battleships are categorized into five specific types, arranged in descending order of firepower: super battleships, super-heavy battleships, heavy battleships, light battleships, and defense ships. The reasons for these categories have long been the source constant debate between fleet officers, naval architects, historians, and commentators, but the broad definitions are given as follows: 
Super battleships are apocalyptic capital ships capable of engaging fleets of enemy battleships of any other type and winning. From its founding in 2163 to the conclusion of the Human-Covenant War in 2553, the UNSC commissioned exactly zero super battleships: the type remained entirely theoretical and existed only as a concept. 
Super-heavy battleships were originally envisioned as anti-battleships or battleship killers; the trio of super-heavy battleships ordered in the 2160s and 2170s were all designed in anticipation of facing down multiple enemy battleships. When no enemy battleships materialized, the super-heavy battleships were effectively unchallenged and were eventually discarded as impractical and expensive. Notably, all three super-heavy battleships built during the Interplanetary Era were over 3,000 meters long. 
Heavy battleships, like most UNSC ships of the heavy type, were hyper-focused on space combat capabilities. Ranging from 1,500 meters to just another 3,000 meters, the heavy battleships of the era were defined by their armor, firepower, relatively limited utility, and somewhat lackluster speed. 
Light battleships prioritized speed and utility alongside their impressive arsenals and armor plating. Light battleships of the era were between 1,000 meters and 2,000 meters in length and were only outpaced by cruisers. 
Defense ships included all battleships under a thousand meters, from the smallest at 278 meters to the largest at 956 meters. UNSC defense ships were heavily armored and generally heavily armed, with missiles and naval artillery. Defense ships were present at every major naval engagement of the Interplanetary War, and two were destroyed during the Trojan Offensive, the only battleships lost in action during the war. 
==Timeline==
Year	Class 	Type 	Builder(s) 	Length 	Notes
2073	Earth One-class 	#4Defense ship 	ASC Corporation (Earth) 	0.8.6.0860 meters 	The Earth One-class defense ships began entering commissioned in 2073 and the last Earth One defense ship was placed in reserve in 2329.
2085	Apollo 	#4Defense ship 	SVR Shipyards (Earth) 	0.6.7.5675 meters 	The defense ship UNSC Apollo was commissioned in 2085 and was decommissioned in 2292.
2109	Sentinel of Phobos 	#4Defense ship 	SVR Shipyards (Earth) 	0.5.9.0590 meters 	The defense ship UNSC Sentinel of Phobos was commissioned in 2109 and was decommissioned in 2291.
2116	Drake of Deimos 	#4Defense ship 	Archangel Designs & Construction (Mars) 	0.5.4.5545 meters 	The defense ship UNSC Drake of Deimos was commissioned in 2116 and was decommissioned in 2291.
2162	Hazard ‡ 	#4Defense ship 	BRVK Group (Ceres) 	0.5.8.5585 meters 	The defense ship UNSC Hazard was commissioned in 2162. The defense ship took a tremendous beating in September 2168 during the Retaking of Ceres. The Hazard was docked at Ceres for the rest of the war and was finally decommissioned in September 2170 and sold for scrap.
2164	Valkyrie 	#4Defense ship 	Apollo Shipyards (Luna) 	0.6.8.8688 meters 	The defense ship UNSC Valkyrie was commissioned in 2164 and was decommissioned in 2175.
2164	Deep Tranquility 	#2Heavy battleship 	Apollo Shipyards (Luna) 	1.7.8.41,784 meters	The heavy battleship UNSC Deep Tranquility was commissioned in 2164 and was decommissioned in 2298.
2165	Ajax 	#2Heavy battleship 	Superdreadnought Heavy Industries (Mars) 	1.9.8.51,985 meters	The heavy battleship UNSC Ajax was commissioned in 2165. The Ajax was repeatedly modernized and eventually renamed Ajax of Sol; the battleship became the ceremonial flagship of the UNSC Home Fleet in 2370 and survived the Human-Covenant War.
2165	Armstrong 	#3Light battleship 	Aldrin-Armstrong Company (Luna) 	1.4.7.71,477 meters	The light battleship UNSC Armstrong was commissioned in 2165 and was decommissioned in 2191.
2165	Dragon 	#4Defense ship 	Aldrin-Armstrong Company (Luna) 	0.6.6.0660 meters 	The defense ship UNSC Dragon was commissioned in 2165 and was placed in reserve in 2195.
2165	Shockwave 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.7.3.5735 meters 	The defense ship UNSC Shockwave was commissioned in 2165 and was placed in reserve in 2292.
2165	Stalwart Guardian 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.5.1.7517 meters 	The defense ship UNSC Stalwart Guardian was commissioned in 2165 and was decommissioned in 2212.
2165	Storm Warning 	#4Defense ship 	Apollo Shipyards (Luna) 	0.8.1.2812 meters 	The defense ship UNSC Storm Warning was commissioned in 2165 and was placed in reserve in 2293.
2165	Vendetta 	#3Light battleship 	BRVK Group (Mars) 	1.0.0.61,006 meters	The light battleship UNSC Vendetta was commissioned in 2165 and was placed in reserve in 2297.
2165	Foe Hammer 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.8.0.1801 meters 	The defense ship UNSC Foe Hammer was commissioned in 2165 and was placed in reserve in 2369.
2166	Peacemaker 	#3Light battleship 	BRVK Group (Ceres) 	1.0.1.71,017 meters	The light battleship UNSC Peacemaker was commissioned in 2166 and was placed in reserve in 2295.
2166	Audacious 	#3Light battleship 	SVR Shipyards (Earth) 	1.4.8.01,480 meters	The light battleship UNSC Audacious was commissioned in 2166 and was placed in reserve in 2308.
2166	Durendal 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.9.5.6956 meters 	The defense ship UNSC Durendal was commissioned in 2166 and was placed in reserve in 2297.
2166	Kearsarge † 	#4Defense ship 	North American Superior (Earth) 	0.9.7.9979 meters 	The defense ship UNSC Kearsarge was commissioned in 2166 and was destroyed by Frieden forces in January 2170 during the Trojan Offensive.
2166	Valiant ‡ 	#4Defense ship 	North American Superior (Earth) 	0.9.7.7977 meters 	The defense ship UNSC Valiant was commissioned in 2166. The defense ship was badly damaged by Frieden forces in January 2170 during the Trojan Offensive. Considered for repair, the Valiant was ultimately decommissioned in early 2171 and sold for scrap.
2166	Thor 	#4Defense ship 	BRVK Group (Ceres) 	0.7.1.9719 meters 	The defense ship UNSC Thor was commissioned in 2166 and was decommissioned in 2299.
2166	Gibraltar 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.7.2.8728 meters 	The defense ship UNSC Gibraltar was commissioned in 2166 and was placed in reserve in 2306.
2166	Agincourt 	#3Light battleship 	Rheasilvia Imperial (Vesta) 	1.0.9.71,097 meters	The light battleship UNSC Agincourt was commissioned in 2166 and was placed in reserve in 2308.
2167	Ares 	#1Super-heavy battleship	Superdreadnought Heavy Industries (Mars) 	3.0.1.53,015 meters	The super-heavy battleship UNSC Ares was commissioned in 2167 and was placed in reserve in 2293.
2167	Crater-Maker 	#3Light battleship 	Apollo Shipyards (Luna) 	1.3.4.61,346 meters	The light battleship UNSC Crater-Maker was commissioned in 2167 and was decommissioned in 2315.
2167	Lunar Hero 	#3Light battleship 	Apollo Shipyards (Luna) 	1.1.5.51,155 meters	The light battleship UNSC Lunar Hero was commissioned in 2167 and was decommissioned in 2191.
2167	Attila ‡ 	#4Defense ship 	BRVK Group (Mars) 	0.7.0.5705 meters 	The defense ship UNSC Attila was commissioned in 2167. The defense ship was irreparably damaged by Frieden forces in January 2170 during the Trojan Offensive.
2167	Gladiator ‡ 	#4Defense ship 	North American Superior (Earth) 	0.9.9.5995 meters 	The defense ship UNSC Gladiator was commissioned in 2167. The defense ship suffered tremendous damage in January 2170 during the Trojan Offensive. Retained as a potential asset, the damaged battleship languished at 911 Agamemnon before finally being decommissioned in 2172 and sold for scrap.
2167	Waterloo 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.9.1.8918 meters 	The defense ship UNSC Waterloo was commissioned in 2167 and was decommissioned in 2298.
2167	Thunderer ‡ 	#4Defense ship 	Aldrin-Armstrong Company (Luna) 	0.9.5.7957 meters 	The defense ship UNSC Thunderer was commissioned in 2167. The defense ship suffered tremendous damaged in January 2170 during the Trojan Offensive and was ultimately judged irreparably and decommissioned in late 2170.
2167	Upholder 	#4Defense ship 	North American Superior (Earth) 	0.8.8.6886 meters 	The defense ship UNSC Upholder was commissioned in 2167 and was placed in reserve in 2330.
2168	Onslaught 	#3Light battleship 	North American Superior (Earth) 	1.5.0.81,508 meters	The light battleship UNSC Onslaught was commissioned in 2168 and was decommissioned in 2295.
2168	Sound of Thunder 	#3Light battleship 	North American Superior (Earth) 	1.2.6.01,260 meters	The light battleship UNSC Sound of Thunder was commissioned in 2168 and was placed in reserve in 2316.
2168	Odoacer 	#3Light battleship 	BRVK Group (Mars) 	1.2.1.61,216 meters	The light battleship UNSC Odoacer was commissioned in 2168 and was decommissioned in 2290 and placed in reserve.
2168	Royal Oak 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.9.0.5905 meters 	The defense ship UNSC Royal Oak was commissioned in 2168 and was placed in reserve in 2290.
2168	Vengeance of Europa 	#4Defense ship 	Aldrin-Armstrong Company (Luna) 	0.9.3.3933 meters 	The defense ship UNSC Vengeance of Europa was commissioned in 2168 and was placed in reserve in 2391.
2168	Trafalgar 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.9.1.7917 meters 	The defense ship UNSC Trafalgar was commissioned in 2168 and was decommissioned in 2297.
2168	Trident 	#4Defense ship 	Aldrin-Armstrong Company (Luna) 	0.9.7.2972 meters 	The defense ship UNSC Trident was commissioned in 2168 and was decommissioned in 2198.
2169	Eclipse 	#2Heavy battleship 	Apollo Shipyards (Luna) 	1.5.5.41,554 meters	The heavy battleship UNSC Eclipse was commissioned in 2169 and was placed in reserve in 2367.
2169	Victory-class 	#2Heavy battleship 	Superdreadnought Heavy Industries (Earth)	1.8.5.41,854 meters	The five Victory-class heavy battleships began entering service in 2169 and the last Victory battleship was decommissioned in 2294.
2169	Do Unto Others 	#3Light battleship 	North American Superior (Earth) 	1.3.3.21,332 meters	The light battleship UNSC Do Unto Others was commissioned in 2169 and was decommissioned in 2292.
2169	Impetuous 	#3Light battleship 	SVR Shipyards (Earth) 	1.6.5.61,656 meters	The light battleship UNSC Impetuous was commissioned in 2169 and was decommissioned in 2296 and placed in reserve.
2169	Pallas Athena 	#3Light battleship 	Aegis Yards (2 Pallas) 	1.1.9.11,191 meters	The light battleship UNSC Pallas Athena was commissioned in 2169 and was decommissioned in 2310 and placed in reserve.
2169	Sword of Ceres 	#4Defense ship 	Cererian Shipyards (Ceres) 	0.8.7.6876 meters 	The defense ship UNSC Sword of Ceres was commissioned in 2169 and was placed in reserve in 2290.
2169	Leonidas ‡ 	#4Defense ship 	BRVK Group (Mars) 	0.9.6.1961 meters 	The defense ship UNSC Leonidas was commissioned in 2169. The defense ship was badly damaged by Frieden forces in January 2170 during the Trojan Offensive. After languishing in dock for more than a year, the crippled battleship was decommissioned in 2172 and sold for scrap.
2169	Fields of Verdun 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.8.1.5815 meters 	The defense ship UNSC Fields of Verdun was commissioned in 2169 and was placed in reserve in 2299.
2169	Cannae 	#4Defense ship 	BRVK Group (Mars) 	0.8.9.6896 meters 	The defense ship UNSC Cannae was commissioned in 2169 and was decommissioned in 2290.
2169	Fury † 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.9.9.7997 meters 	The defense ship UNSC Fury was commissioned in 2169. The defense ship was destroyed by Frieden forces in January 2170 during the Trojan Offensive.
2169	Heracles 	#4Defense ship 	North American Superior (Earth) 	0.8.8.0880 meters 	The defense ship UNSC Heracles was commissioned in 2169 and was placed in reserve in 2291.
2170	Preeminence 	#2Heavy battleship 	Rhiannon Star Yards (Europa) 	2.2.9.62,296 meters	The heavy battleship UNSC Preeminence was commissioned in 2170 and was placed in reserve in 2294.
2170	Saratoga 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.8.6.0860 meters 	The defense ship UNSC Saratoga was commissioned in 2170 and was placed in reserve in 2293.
2170	Grenadier 	#4Defense ship 	Apollo Shipyards (Luna) 	0.8.8.6886 meters 	The defense ship UNSC Grenadier was commissioned in 2170 and was placed in reserve in 2298.
2170	Swiftsure 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.7.2.5725 meters 	The defense ship UNSC Swiftsure was commissioned in 2170 and was placed in reserve in 2296.
2171	Monarch 	#4Defense ship 	North American Superior (Earth) 	0.9.0.0900 meters 	The defense ship UNSC Monarch was commissioned in 2171 and was placed in reserve in 2296.
2172	Fire and Sword 	#4Defense ship 	Cererian Shipyards (Ceres) 	0.9.8.1981 meters 	The defense ship UNSC Fire and Sword was commissioned in 2172 and was placed in reserve in 2299.
2173	Pater Patriae 	#3Light battleship 	Cererian Shipyards (Ceres) 	1.3.6.61,366 meters	The light battleship UNSC Pater Patriae was commissioned in 2173 and was decommissioned in 2297.
2174	Roanoke 	#4Defense ship 	Rhiannon Star Yards (Europa) 	0.8.4.8848 meters 	The defense ship UNSC Roanoke was commissioned in 2174 and was decommissioned in 2288.
2175	Armageddon's Edge 	#3Light battleship 	Cererian Shipyards (Ceres) 	1.2.1.11,211 meters	The light battleship UNSC Armageddon's Edge was commissioned in 2175 and was decommissioned in 2191.
2177	Vindication-class 	#2Heavy battleship 	Superdreadnought Heavy Industries (Earth)	1.8.5.41,854 meters	The nine Vindication-class heavy battleships began entering service in 2177 and the last Vindication battleship was placed in reserve in 2336.
2178	Phalanx 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.7.0.0700 meters 	The defense ship UNSC Phalanx was commissioned in 2178 and was decommissioned in 2286.
2179	Thunder From The Heavens	#1Super-heavy battleship	Superdreadnought Heavy Industries (Earth)	3.0.5.73,057 meters	The super-heavy battleship UNSC Thunder From The Heavens was commissioned in 2179 and was placed in reserve in 2311.
2180	Iliad 	#4Defense ship 	Rhiannon Star Yards (Europa) 	0.7.5.6756 meters 	The defense ship UNSC Iliad was commissioned in 2180 and was placed in reserve in 2385.
2180	Year of Lamentation 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.8.0.0800 meters 	The defense ship UNSC Year of Lamentation was commissioned in 2180 and was decommissioned in 2367.
2181	Stalwart of Heaven 	#3Light battleship 	Apollo Shipyards (Luna) 	1.8.4.61,846 meters	The light battleship UNSC Stalwart of Heaven was commissioned in 2181 and was placed in reserve in 2318.
2182	Achilles 	#2Heavy battleship 	Superdreadnought Heavy Industries (Mars) 	2.1.1.72,117 meters	The heavy battleship UNSC Achilles was commissioned in 2182 and was decommissioned in 2295.
2188	Oblivion's Approach 	#1Super-heavy battleship	Superdreadnought Heavy Industries (Mars) 	3.0.1.73,017 meters	The super-heavy battleship UNSC Oblivion's Approach was commissioned in 2188 and was decommissioned in 2209.
2196	Quarrelsome 	#3Light battleship 	Rheasilvia Imperial (Vesta) 	1.2.7.61,276 meters	The light battleship UNSC Quarrelsome was commissioned in 2196 and was placed in reserve in 2327.
2199	Kaiser 	#4Defense ship 	Rhiannon Star Yards (Europa) 	0.8.2.2822 meters 	The defense ship UNSC Kaiser was commissioned in 2199 and was decommissioned in 2386.
2211	Chateaurenault 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.9.0.6906 meters 	The defense ship UNSC Chateaurenault was commissioned in 2211 and was placed in reserve in 2415.
2236	Valkyrie-class 	#2Heavy battleship 	Superdreadnought Heavy Industries (Mars) 	1.8.5.41,854 meters	The four Valkyrie-class heavy battleships began entering service in 2236 and the last Valkyrie battleship was decommissioned in 2367.
2249	Red Baron 	#4Defense ship 	North American Superior (Earth) 	0.9.9.2992 meters 	The defense ship UNSC Red Baron was commissioned in 2249 and was decommissioned in 2291.
2256	Veneration-class 	#2Heavy battleship 	Superdreadnought Heavy Industries (Mars) 	1.8.5.41,854 meters	The Veneration-class heavy battleships began entering service in 2256.
2272	Tegethoff 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.9.2.2922 meters 	The defense ship UNSC Tegethoff was commissioned in 2272 and was placed in reserve in 2365.
2276	Derfflinger 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.9.4.5945 meters 	The defense ship UNSC Derfflinger was commissioned in 2276 and was placed in reserve in 2365.
2287	Seydlitz 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.9.4.5945 meters 	The defense ship UNSC Seydlitz was commissioned in 2276 and was placed in reserve in 2395.
2290	Borodino 	#4Defense ship 	Superdreadnought Heavy Industries (Mars) 	0.9.4.9949 meters 	The defense ship UNSC Borodino was commissioned in 2290 and was placed in reserve in 2412.
2296	Rurik 	#4Defense ship 	Rheasilvia Imperial (Vesta) 	0.9.7.8978 meters 	The defense ship UNSC Rurik was commissioned in 2296 and was placed in reserve in 2387.
==Super-heavy battleships==
Only three super-heavy battleships were commissioned by the UNSC during the Interplanetary Era: the Ares in 2167, the Thunder From The Heavens in 2179, and the Oblivion's Approach in 2188. All three were built by the Martian shipyards of Superdreadnought Heavy Industries; each was longer than 3,000 meters in length; and each carried enough firepower to besiege a world. 
===UNSC Ares===
The UNSC Ares was the first super-heavy battleship ever commissioned by the United Nations Space Command, entering service in 2167. The enormous battleship was ordered in early 2163. The 3,015-meter-long Ares was intended to be capable of engaging multiple Deep Tranquility-type battleships simultaneously, the result of fears about secret Frieden ship construction and the possible theft of schematics for the then-incomplete Deep Tranquility. 
Ares therefore touted unequaled armor plating and a colossal arsenal of missiles and naval artillery. Unsurprisingly, most enemy forces avoided the enormous battleship whenever possible and as a result, the Ares saw limited action during the war. The battleship took part in the Siege of Ceres in 2167 before proceeding to Jovian Space and engaging in planetary bombardment operations; the Ares deterred Frieden sorties by its presence alone. The Ares was heavily involved in the Trojan Offensive and saw the fiercest fighting of its career. The Ares was placed in reserve in 2293 following the Naval Compromise of 2290. Some its guns were installed in UNSC installations on Mars, Deimos, and Ceres. 
===UNSC Thunder from the Heavens===
The UNSC Thunder from the Heavens was the largest interplanetary battleship ever commissioned by the United Nations Space Command, entering the fleet in 2179. The titanic 3,057-meter-long battleship was incomplete when the Treaty of Callisto was signed in March 2170, but the UNSC High Command was unwilling to cancel the project and ordered it to be finished. The Thunder from the Heavens was rumored to carry sufficient ordnance to trigger an extinction-level event against any colony in the system and was frequently referred to by commentators as the "Hammer of the UEG". 
The battleship was perhaps the most expensive ship in the fleet to maintain, but in the decades following the war, its fearsome and formidable presence was deemed more than worthy of the cost by the UNSC and the UEG. By 2250, the situation had changed: UNSC Naval Command protected the battleship against the UEG, who saw the Thunder from the Heavens as a needless expense that had long outlived its utility. The super-heavy battleship was spared the supposed ignominy of the scrapyard during the Naval Compromise of 2290 and was placed in reserve in 2311. The battleship's guns, much like those of the Ares, were installed in various defense installations. Disarmed and out of service, the enormous ship still required major continuous maintenance despite being decommissioned; the UNSC Navy continued to defend the expenditure until the crises of the Inner Colony Wars forced Naval Command to relent. The Thunder from the Heavens was sold for scrap in 2388. Several sections of the battleship were preserved and installed in museums and several UNSC installations. 
===UNSC Oblivion's Approach===
The UNSC Oblivion's Approach was the last interplanetary super-heavy battleship commissioned by the UNSC, entering service in 2188. Originally envisioned as a war-winning propaganda weapon, Oblivion's Approach was perhaps the most heavily armed warship of the era and was said to be able to outfight either of its contemporaries with relative ease. The battleship's overwhelming arsenal and its name were intended to eliminate the possibility of resistance in enemy forces by its mere arrival in the battle space. These weapon systems and the battleship they were attached to demanded huge crews and constant maintenance. By 2195, Oblivion's Approach was more expensive to operate than any three other battleships in service; the super-heavy battleship was retired fourteen years later as a consequence of its costly operational expenses. Oblivion's Approach was decommissioned in 2209. 
The main batteries of the super-heavy battleship mostly went to Phobos and Luna, though at least two batteries were installed on 911 Agamemnon in 2218. 
==Heavy battleships==
The UNSC commissioned 48 heavy battleships between 2164 and 2290. Five unique heavy battleships were built during and after the Interplanetary War: Achilles, Ajax, Deep Tranquility, Eclipse, and Preeminence. The remainder were V-type battleships, based on the Victory-class that entered service in 2169: twenty-five Veneration-class, nine Vindication-class, five Victory-class, and four Valkyrie-class. The majority of the UNSC's heavy battleships were scrapped or placed in reserve in the 2290s following the Naval Compromise, and the UNSC did not commission another heavy battleship until the UNSC Sovereign entered service in 2452. 
===UNSC Deep Tranquility===
The UNSC Deep Tranquility was commissioned in December 2164. The heavy battleship was designed by Strategic Solutions, Inc. in 2155, and construction was begun in Lunar orbit in 2157 Luna by Apollo Shipyards. The battleship was completed and commissioned ahead of the Armstrong, another lunar battleship that was plagued with construction and redesign delays. Unlike the Armstrong, the Deep Tranquility eschewed speed in favor of sporting a tremendous arsenal on its 1,784-meter-long length, all of which was clad in heavy armor plating: the battleship could take a tremendous beating and retaliation with unequaled firepower, should the situation demand it. The Deep Tranquility carried fourteen naval batteries, forty point defense turrets, and sixty Vanguard missile pods (360 Vanguard missiles). Following its December commission, the heavy battleship was sent to Mars to reinforce the fleet ahead of its deployment to Jovian Space. Deep Tranquility was retired in 2298.
===UNSC Ajax===
The UNSC Ajax, later renamed Ajax of Sol, was the longest serving battleship of the United Nations Space Command. Commissioned in 2165, the Ajax took part in the largest space battle of the Interplanetary Conflict and achieved considerable fame and recognition throughout the fleet and with the public. The heavy battleship remained in active commission for the next 280 years, a symbol of the implacable power of the UNSC. In 2445, the battleship was officially rechristened with its long-standing nickname Ajax of Sol, allowing the commissioning of a new interstellar Ajax, a Commonwealth-class heavy cruiser. During the worst years of the Insurrection, Ajax of Sol participated in highly publicized tours of the Sol System. Despite its age, the battleship participated in the defense of its home system in 2552, engaging Covenant forces near Mars. The last active-duty warship of Interplanetary War and the only one to survive the Battle of Earth, Ajax of Sol remained in service following the conclusion of the Human-Covenant War. 
===UNSC Eclipse===
The UNSC Eclipse was commissioned in 2169 and was decommissioned in 2367.
===Victory-class===
The Victory-class heavy battleships began entering service in 2169 and served as the foundational design for UNSC battleships for more than a century. The UNSC ordered ten Victory battleships in 2167: five were completed as ordered, four were modified during construction and completed as Vindication heavy battleships, and one was cancelled. All five Victory heavy battleships were scrapped in the early 2290s as part of the Naval Compromise.
*UNSC Victory (2169 - 2290)
*UNSC Unity (2170 - 2290)
*UNSC Glory (2173 - 2294)
*UNSC Mars (2176 - 2292)
*UNSC Jupiter (2179 - 2294)
*UNSC Ceres (modified)
*UNSC Europa (modified)
*UNSC Callisto (modified)
*UNSC Io (modified)
*UNSC Ganymede (cancelled)
===UNSC Preeminence===
The UNSC Preeminence was commissioned in 2170. Built by Rhiannon Star Yards on Europa during the Jupiter Campaign, the heavy battleship entered service in early January and took part in the Trojan Offensive days after its commissioning. Measuring 2,296 meters in length and sporting twenty-two naval batteries, fifty-four point defense turrets, and eighty-two Vanguard missile pods (with an available arsenal of 492 Vanguard missiles), the Preeminence smashed Frieden defenses and pulverized Frieden spacecraft throughout the Trojans. The heavy battleship remained active in the fleet until it was decommissioned as part of the Naval Compromise of 2290 and was placed in reserve in 2294. 
===Vindication-class===
The Vindication-class began entering service in 2177. The class was based on the earlier Victory heavy battleships, but included several major changes to the design, including additional redundant reactors, additional point defense systems, structural reinforcements, and larger Vanguard missile pods. Five were ordered and five incomplete Victory battleships were reordered as Vindication battleships; nine battleships were commissioned between 2177 and 2199, with the last of the Victory conversions having been discarded in 2195 after major weaknesses in its hull had been discovered. 
*UNSC Vindication (2177 - 2296)
*UNSC Ceres (2182 - 2291)
*UNSC Europa (2185 - 2294)
*UNSC United Nations (2189 - 2322)
*UNSC Callisto (2193 - 2297)
*UNSC Earth (2196 - 2293)
*UNSC Io (2197 - 2299)
*UNSC Luna (2198 - 2300)
*UNSC Amazonia (2199 - 2300)
===UNSC Achilles===
The UNSC Achilles was commissioned in 2182. Built by the Martian shipyards of Superdreadnought Heavy Industries, the 2,117-meter-long Achilles carried sixteen batteries, forty-four point defense turrets, and eighty-six Vanguard missile pods (516 Vanguard missiles). The fastest heavy battleship of the Interplanetary Era, the Achilles was propelled by a quartet of massive engines and routinely set speed records for heavy capital ships in the Sol system, leading some to dub the ship a "heavy battlecruiser". The Achilles was placed in reserve in 2295. 
===Valkyrie-class===
The Valkyrie-class were commissioned from 2236 to 2245, and were used primarily as experimental weapons platforms by the UNSC. 
*UNSC Valkyrie (2236 - 2367)
*UNSC Archangel (2239 - 2301)
*UNSC Champion (2242 - 2296)
*UNSC Paragon (2245 - 2297)
===Veneration-class===
The Veneration-class entered service from 2256 to 2287. The largest heavy battleship class of the UNSC until Sovereign-class of 2452, twenty-five Veneration battleships were commissioned. 
*UNSC Veneration (2256 - 2292)
*UNSC Empress (2256 - 2292)
*UNSC Peacekeeper (2259 - 2294)
*UNSC Meteor (2260 - 2295)
*UNSC Ascension (2260 - 2291)
*UNSC Ward (2265 - 2314)
*UNSC Nowak-Anders (2266 - 2315)
*UNSC T.S. Nguyen (2266 - 2312)
*UNSC Mazur (2267 - 2315)
*UNSC Aleksov (2268 - 2311)
*UNSC Wolfe (2268 - 2315)
*UNSC J. Alexander (2269 - 2327)
*UNSC Hayes-Singh (2271 - 2344)
*UNSC Saburov (2272 - 2330)
*UNSC K.P. Nguyen (2273 - 2328)
*UNSC Doyle-Tereshchenko (2275 - 2397)
*UNSC Liang (2275 - 2341)
*UNSC Gauthier (2276 - 2350)
*UNSC Barach-Garcia (2278 - 2375)
*UNSC Durand (2279 - 2376)
*UNSC Viraj Patel (2282 - 2375)
*UNSC Otto Braam (2282 - 2386)
*UNSC Solomon Yeung (2284 - 2388)
*UNSC Tobias Li (2286 - 2398)
*UNSC Theodore de Lange (2287 - 2391)
==Light battleships==
The UNSC commissioned eleven unique light battleships between 2165 and 2196: Armstrong in 2165, Peacemaker in 2166, Crater-Maker and Lunar Hero in 2167, Onslaught and Sound of Thunder in 2168, Do Unto Others in 2169, Pater Patriae in 2173, Armageddon's Edge in 2175, Stalwart of Heaven in 2181, and Quarrelsome in 2196. 
===UNSC Armstrong===
The UNSC Armstrong was the first light battleship of the UNSC. Originally laid down in 2153, construction had been delayed and interrupted several times, including two significant redesigns; after twelve years in the yards, Armstrong was finally commissioned in 2165. The light battleship served throughout the Interplanetary War, and was retired in 2191 alongside Armageddon's Edge and Lunar Hero. 
===UNSC Vendetta===
The UNSC Vendetta was commissioned in 2165 and was placed in reserve in 2297. 
===UNSC Peacemaker===
The fourth battleship to be commissioned, the UNSC Peacemaker entered service in February 2166, five and half months after the Jovian Action. Despite the need for capital ships and heavy weaponry in Jovian Space, the Peacemaker spent the next three years in the belt and was present at the Battle of Juno and the siege of Ceres. In January 2169, the Peacemaker joined the newer light battleships Onslaught and Sound of Thunder and journeyed to Jovian Space for the first time. There, the three battleships joined the already-present Armstrong, Crater-Maker, and Lunar Hero in conducting both show-of-force and planetary bombardment operations. Eventually joined by the newly commissioned Do Unto Others, all seven light battleships participated in the Trojan Offensive in January 2170. Peacemaker remained in service until it was decommissioned and placed in reserve in 2285. 
===UNSC Agincourt===
The UNSC Agincourt was commissioned in 2166 and was placed in reserve in 2308. 
===UNSC Crater-Maker===
The first of two Apollo Shipyards light battleships commissioned in 2167, the 1,346-meter-long UNSC Crater-Maker was immediately deployed to Jovian Space. Uniquely envisioned with a focus on planetary bombardment, Crater-Maker saw extensive use in support of ground operations on each of the Jovian Moons. The battleship nevertheless was a fully capable space combatant as well, and participated in the Trojan Offensive in 2170. Crater-Maker remained in service until 2315, in part due to her specialization. The battleship survived the Naval Compromise of 2290 and was decommissioned due to her age. Elements of the Crater-Maker were sold to naval museums and monuments, with her main batteries installed on the very moons she so heavily bombarded during the war. 
===UNSC Lunar Hero===
The second of two Apollo Shipyards light battleships commissioned in 2167, the 1,155-meter-long UNSC Lunar Hero required several months of trials and corrections before being accepted. These delays and fixes were the result of the manner of her construction: Lunar Hero started life not as an individual battleship, but instead as the heavy battleship Subjugator and the light battleships Dominance and Intervention. Ordered in 2161 alongside the Eclipse and Crater-Maker, all three were ultimately cancelled at various stages of construction and after the facility building Subjugator was damaged during the Lunar uprisings. Unwilling to scrap the incomplete ships outright, Apollo Shipyards instead repurposed them for a new and improved design, which the UNSC subsequently tentatively approved. Despite the odd nature of its construction and its initial difficulties in trials, Lunar Hero proved acceptable for service in the UNSC Navy. Difficulties in maintaining the battleship mounted later in her life, and Lunar Hero was retired alongside Armageddon's Edge and Armstrong in 2191. 
===UNSC Onslaught===
The 1,508-meter-long light battleship UNSC Onslaught was commissioned in early 2168. One of the two North American Superior-built battleships of the war, Onslaught and her smaller sister Sound of Thunder quickly acquired a reputation for speed and lethality. 
===UNSC Sound of Thunder===
The 1,260-meter-long light battleship UNSC Sound of Thunder was commissioned in late 2168. Built by North American Superior alongside her larger sister Onslaught, both battleships quickly established a reputation for mobility, maneuverability, and overwhelming firepower. 
===UNSC Do Unto Others===
The UNSC Do Unto Others was commissioned in 2169 and was decommissioned in 2292. 
===UNSC Pater Patriae===
The UNSC Pater Patriae was commissioned in 2173 and was decommissioned in 2297. 
===UNSC Armageddon's Edge===
The light battleship UNSC Armageddon's Edge was commissioned in 2175. Armageddon's Edge, alongside Armstrong and Lunar Hero, was decommissioned and scrapped in 2191. 
===UNSC Stalwart of Heaven===
The 1,846-meter-long light battleship UNSC Stalwart of Heaven was commissioned in 2181. Stalwart of Heaven was decommissioned and placed in reserve in 2285. 
===UNSC Quarrelsome===
The 1,276-meter-long light battleship UNSC Quarrelsome was commissioned in 2196. Quarrelsome was decommissioned and placed in reserve in 2457.
==Defense ships==
The UNSC commissioned fifty-eight defense ships between 2073 and 2290. 
===Earth One-class===
The Earth One-class defense ships began entering service in 2073 under the banner of the United Nations Office for Outer Space Affairs (UNOOSA). Each member of the class carried sixty silo-fired M1 Defender missiles, five twin Mark I Goliath 450mm naval coilguns, eight twin M2 Inhibitor 220mm naval autocannons, and twenty-four quadruple M1 Interceptor 30mm point defense guns. Twelve defense ships were completed by the close of 2078. The class were transferred to the UN Space Authority in 2080 and were subsequently transferred to the UN Space Command in December 2163. All twelve defense ships saw considerable action during the Interplanetary War, with at least one Earth One battleship present at every major space battle of the war. 
With the exception of the UNSC Olympus, which was irreparably damaged during the January 2170 Trojan Offensive, the Earth One-class remained in service into the 2290s. The last of the class to be decommissioned were the UNSC Earth One in 2306 and the UNSC Fortress of Sol in 2329. The latter would be recalled to service in the last years of the Human-Covenant War. 
*UNSC Earth One (2073 - 2306)
*UNSC Defender (2073 - 2292)
*UNSC Guardian (2074 - 2291)
*UNSC Protector (2074 - 2295)
*UNSC Olympus (2075 - 2171)
*UNSC Aries (2075 - 2296)
*UNSC Watchtower (2076 - 2293)
*UNSC Watchguard (2076 - 2291)
*UNSC Watchkeeper (2077 - 2294)
*UNSC Fortress of Sol (2077 - 2329)
*UNSC Celestial Citadel (2078 - 2291)
*UNSC Star Castle (2078 - 2299)
===UNSC Apollo===
The UNSC Apollo was commissioned in 2085. The 675-meter-long battleship was built by SVR Shipyards in Earth orbit, and carried forty-eight M3 Aggressor missile silos, four twin Mark I Goliath 450mm naval coilguns, eight twin M2 Inhibitor 220mm naval autocannons, and sixteen quadruple M1 Interceptor 30mm point defense guns. The Apollo was the workhorse of the Lunar Patrol, contributing heavily during the Lunar Uprisings and later Luna Campaign. In March 2165, the battleship was deployed to the Belt, and joined the Expeditionary Fleet in July; the Apollo took part in the Jovian Action and the Europa Whirlwind. The battleship remained in Jovian Space for the rest of the war, including the Trojan Offensive of January 2170. After the end of the war, the Apollo patrolled the belt from 2175 to 2185 before returning to Luna and being decommissioned in 2190. 
===UNSC Sentinel of Phobos===
The UNSC Sentinel of Phobos was commissioned in 2109. Built by SVR Shipyards, the 590-meter-long Sentinel of Phobos carried forty missile silos (10 M3 Aggressor missiles and 30 M4 Stalwart missiles), three twin Mark I Goliath 450mm naval coilguns, six twin M2 Inhibitor 220mm naval autocannons, and sixteen M1 Interceptor 30mm point defense guns. The battleship was assigned to Phobos and had a mostly uneventful career until the last months of 2163. After the Fall of Deimos, the Sentinel of Phobos took up position above the city of Skyresh and protected the UNSC holdout position until Frieden forces were driven from the colony in March 2164. The battleship took part in driving the Frieden from the colony, suffering moderate damage in doing so. Repair work kept the Sentinel of Phobos out of action until late 2164, and the battleship returned to operations in Martian Space for the duration of the campaign there. When the UNSC declared victory on Mars in late July 2166, the battleship was reassigned to the belt, and fought during the Battle of 3 Juno and the Siege of Ceres. The Sentinel of Phobos survived the war and was decommissioned in 2180. The battleship was disarmed and sold to the Phobos Colonial Association, who carefully disassembled it and rebuilt it on the surface on Phobos, where it became the administrative center of the new settlement Sentinel City in 2184. 
===UNSC Drake of Deimos===
The UNSC Drake of Deimos was commissioned in 2116. Built by Archangel Designs & Construction, the Drake of Deimos was the smallest battleship ever commissioned at just 275 meters in length. The battleship sported 16 missile silos, 2 naval batteries, and 4 point defense guns. Its small arsenal aside, the Drake of Deimos was heavily armored and featured a double-reinforced internal framework. Dr. Cadwallader described the small battleship as "practically indestructible by external forces" and noted that the ship was rejected for scrapping by several prominent shipbreaker yards in the 2170s and 2180s. When Frieden forces invaded the Deimos colony, UNSA Command ordered their personnel to evacuate instead of resisting, and these personnel escaped to the Drake of Deimos in company with more than a hundred colonial refugees. The Drake of Deimos was effectively unable to engage Frieden forces during the Battle of the Martian Moons. The small battleship was expected to remain little more than a Martian guard ship but was ordered to Jovian Space in 2169 and took part in the Trojan Offensive. The Drake of Deimos was repurposed as an armored assault ship and repeatedly deployed UNSC marines and ODSTs against Freiden positions under tremendous fire. After years of being maligned for its inaction during the Frieden occupation, the battleship effectively rebuilt its reputation in January 2170. The Drake of Deimos was decommissioned in 2173 and the UNSC attempted to sell the old battleship for scrap, but the shipbreakers of Mars and Luna refused the contract, citing the double reinforced internal structure and other challenges. In 2192, the decommissioned battleship was placed in reserve. 
Two battalions of ODSTs take their names from the Drake of Deimos: 4th Battalion's Devils of Deimos and 8th Battalion's Drake Commandos. Both units distinguished themselves during Trojan operations in cooperation with the old battleship. 
In 2177, Ex-Frieden officer J.S. Ziegler painted Devils and Hellfire: Revenge of the Drake: thirty-seven ODSTs charge across a rocky asteroid exterior as the Drake of Deimos fires its guns and missiles at the unseen defenders just ahead of the ODST assault. Ziegler based the painting on his nightmares of the Fall of 3317 Paris and presented the artwork in a gallery on Europa. Ziegler, who had fought at Deimos in 2164, had remembered the battleship and recognized it when it attacked his position on the 3317 Paris colony in 2170. 
===UNSC Hazard===
The UNSC Hazard was commissioned in 2162. The battleship was 585 meters long and carried 40 missile silos and 10 point defense turrets. The Hazard was built by the BRVK Group at Ceres, and spent its entire career assigned to Belt operations. The Hazard was repeatedly damaged in battle, in late 2164, in July 2165, and again in early 2166; during the Siege of Ceres in 2168, the Hazard suffered enormous damage during the retaking of its homeport. The Hazard spent the rest of the war docked at Ceres and was deemed irreparably damaged in August 2170. The Hazard was decommissioned in September 2170 and scrapped in place; four of the battleship's point defense turrets were installed on Ceres and added to colony's defense network. 
===UNSC Valkyrie===
The UNSC Valkyrie was commissioned in 2164. The battleship was 488 meters long and carried two naval batteries, six point defense turrets, and Vanguard missile pods. The Valkyrie provided orbital bombardment support during the Luna Campaign before being sent to the belt in late 2165. The Valkyrie participated in the Battle of 3 Juno in 2167 and was badly damaged. The battleship was repaired and remained on belt patrol for the rest of the war. The Valkyrie was decommissioned in 2175. 
===UNSC Dragon===
The UNSC Dragon was commissioned in 2165. The Dragon was 660 meters long and carried 4 naval batteries, 8 point-defense turrets, and 40 silos of anti-ship missiles. Built by the somewhat infamous Aldrin-Armstrong Company above Luna, the Dragon surpassed all expectations. The battleship fought valiantly during the Fleet action of 2165 and the Europa Whirlwind, though the Dragon was badly damaged in action at Europa in 2167. Out of action until January 2169, the battleship prowled the belt for the rest of war. The Dragon was placed in reserve in 2195. In September 2552, NAVCOM ordered the Dragon reactivated and partially modernized for the anticipated Defense of Earth. The old battleship's gun and turret mounts were upgraded and received modern systems, while its silos were refitted to fire Ares anti-ship missiles. The battleship did not receive outrigger guns due to its age. The Dragon was commissioned on October 7, 2552, and was deployed against Covenant forces on October 15. 
===UNSC Shockwave===
The UNSC Shockwave was commissioned in 2165. The Shockwave was built by the Martian shipyards of Superdreadnought Heavy Industries: at 735 meters long, the battleship carried 50 missile silos, 6 naval batteries, and 8 point-defense turrets. The Shockwave was present for both the Fleet action of 2165 and the Europa Whirlwind, and also participated in several punitive attacks on the Jovian Trojans. The Shockwave took part in the Trojan Offensive and suffered minor damage during the fighting. The battleship remained in service until 2292, when it was placed in reserve as part of the Naval Compromise of 2290. The UNSC Shockwave was reactivated in September 2552 for the Defense of Earth. 
===UNSC Stalwart Guardian===
The UNSC Stalwart Guardian was commissioned in 2165 and was decommissioned in 2212. The defense ship was permanently docked at 4 Vesta in 2213 and became the de facto headquarters of the Vesta colonial militia. 
===UNSC Storm Warning===
The UNSC Storm Warning was commissioned in 2165 and was placed in reserve in 2293. 
===UNSC Foe Hammer===
The UNSC Foe Hammer was commissioned in 2165 and was placed in reserve in 2369. 
===UNSC Durendal===
The UNSC Durendal was commissioned in 2166 and was placed in reserve in 2297. 
===UNSC Kearsarge===
The UNSC Kearsarge was commissioned in 2166 and was destroyed in 2170.
===UNSC Valiant===
The UNSC Valiant was commissioned in 2166 and was badly damaged during the Trojan Offensive in 2170. The Valiant was decommissioned in 2171 and was sold for scrap. 
===UNSC Thor===
The UNSC Thor was commissioned in 2166 and was decommissioned in 2299. 
===UNSC Gibraltar===
The UNSC Gibraltar was commissioned in 2166 and was placed in reserve in 2306. 
===UNSC Gladiator===
The UNSC Gladiator was commissioned in 2167 and was badly damaged during the Trojan Offensive in 2170. The Gladiator was docked at 911 Agamemnon for more than a year before being decommissioned in 2172 and scrapped. 
===UNSC Waterloo===
The UNSC Waterloo was commissioned in 2167 and was placed in reserve in 2298. 
===UNSC Thunderer===
The UNSC Thunderer was commissioned in 2167 and was damaged beyond repair during the Trojan Offensive in 2170. The Thunderer survived the Interplanetary War and was decommissioned in late 2170. 
===UNSC Upholder===
The UNSC Upholder was commissioned in 2167 and was placed in reserve in 2250. 
===UNSC Royal Oak===
The UNSC Royal Oak was commissioned in 2168 and was placed in reserve in 2290. 
===UNSC Vengeance of Europa===
The UNSC Vengeance of Europa was commissioned in 2168 and was placed in reserve in 2391. 
===UNSC Trafalgar===
The UNSC Trafalgar was commissioned in 2168 and was decommissioned in 2297. 
===UNSC Trident===
The UNSC Trident was commissioned in 2168 and was decommissioned in 2198. 
===UNSC Sword of Ceres===
The UNSC Sword of Ceres was commissioned in 2169 and was placed in reserve in 2290. 
===UNSC Leonidas===
The UNSC Leonidas was commissioned in 2169 and was damaged during the Trojan Offensive of January 2170. The Leonidas was ultimately decommissioned in 2172. 
===UNSC Fields of Verdun===
The UNSC Fields of Verdun was commissioned in 2169 and was placed in reserve in 2299. 
===UNSC Cannae===
The UNSC Cannae was commissioned in 2169 and was decommissioned in 2290. 
===UNSC Fury===
The UNSC Fury was commissioned in 2169 and was destroyed in 2170.
===UNSC Heracles===
The UNSC Heracles was commissioned in 2169 and was placed in reserve in 2291. 
===UNSC Saratoga===
The UNSC Saratoga was commissioned in 2170, the last battleship completed before the end of the war. The Saratoga was placed in reserve in 2293. 
===UNSC Grenadier===
The UNSC Grenadier was commissioned in 2170 and was placed in reserve in 2298. 
===UNSC Swiftsure===
The UNSC Swiftsure was commissioned in 2170 and was placed in reserve in 2296. 
===UNSC Monarch===
The UNSC Monarch was commissioned in 2171 and was placed in reserve in 2296. 
===UNSC Fire and Sword===
The UNSC Fire and Sword was commissioned in 2172 and was placed in reserve in 2299. 
===UNSC Roanoke===
The UNSC Roanoke was commissioned in 2174 and was decommissioned in 2288. The Roanoke was permanently docked at 911 Agamemnon as the Roanoke Naval Battery. 
===UNSC Phalanx===
The UNSC Phalanx was commissioned in 2178 and was decommissioned in 2286. The Phalanx was permanently docked at 3317 Paris and designated as the Phalanx Naval Annex. 
===UNSC Iliad===
The UNSC Iliad was commissioned in 2180 and was placed in reserve in 2385. 
===UNSC Year of Lamentation===
The UNSC Year of Lamentation was commissioned in 2180 and was decommissioned in 2367. 
===UNSC Kaiser===
The UNSC Kaiser was commissioned in 2199 and was placed in reserve in 2386. 
===UNSC Chateaurenault===
The UNSC Chateaurenault was commissioned in 2211 and was placed in reserve in 2415. 
===UNSC Red Baron===
The UNSC Red Baron was commissioned in 2249 and was decommissioned in 2291. 
===UNSC Tegethoff===
The UNSC Tegethoff was commissioned in 2272 and was placed in reserve in 2365. 
===UNSC Derfflinger===
The UNSC Derfflinger was commissioned in 2276 and was placed in reserve in 2365. 
===UNSC Seydlitz===
The UNSC Seydlitz was commissioned in 2287 and was placed in reserve in 2395. 
===UNSC Borodino===
The UNSC Borodino was commissioned in 2290 and was placed in reserve in 2412. 
===UNSC Rurik===
The UNSC Rurik was commissioned in 2296 and was placed in reserve in 2387. 
==See also==
*Ships of the United Nations Space Command