Navy redirects here. If you were looking for the Covenant equivalent, see Covenant Navy.
“To the stars and beyond”
— Poster advertisement in Promesa.[3]

The UNSC Navy is the branch of the UNSCDF responsible mostly for naval operations in space, though they sometimes operate in the oceans with their terrestrial arm. Its roles include ship-to-ship combat, orbital bombardment, the deployment of atmospheric and space fighters, and the delivery of UNSC Marines, especially ODSTs, into combat.


This section requires expansion.

The UNSC Navy was commissioned with the UNSC Marine Corps in 2163[1] as a result of the UN's need to oversee and monitor Marine deployments from space. The UNSC Navy is a direct descendant of the UN Navy.

Human-Covenant warEdit

“Holding the Line.”
— Advertisement on recruiting center in New Mombasa Sector 4.[4]
Main article: Human-Covenant war

At the onset of the Human-Covenant war in early 2525, the UNSC Navy was hopelessly outclassed both technologically and numerically by the Covenant juggernaut. The Covenant Navy was fielding (among other technologies) energy shielding and plasma weaponry that allowed them to deliver and receive more punishment than their human counterparts. Superior slipspace navigation also allowed the Covenant to travel more than four hundred times faster than human vessels, with incomparable accuracy. This discrepancy was still very evident towards the climax of the war some 27 years later, in 2552 and 53, despite humanity's strong efforts to both innovate and emulate Covenant, and to a lesser extent Forerunner, technology.

On November 1st, 2525, the UNSC went to full alert and stripped down the Colonial Military Administration, awarding NAVCOM any remaining CMA naval units.[5]

Most of the battles during the war incorporated elements of the Navy. During the early stages of the war, Admiral Preston Cole was given command of large sections of the Navy.[6]


By 2558 however, the balance of power had shifted, and the UNSC Navy was outmatching Jul 'Mdama's Covenant's technology, as demonstrated at Requiem. This has been paraded with the launch of UNSC Infinity the largest, and most sophisticated ship in the Navy arsenal, which exceeds the CAS-class assault carrier in size, and rivaled its shielding and weaponry. The UNSC has further refitted its current fleets with reverse-engineered Covenant and Forerunner technology gathered during the war, allowing them to not only hold their own against, but to surpass the previously superior Covenant ships.

However, with the resurgence of massive amounts of Forerunner tech, the Navy still has its challenges. This was made evident when the Ur-Didact attempted to compose Earth. The UNSC Infinity only created a small hole in the Didact's ship when firing two of its MAC cannons.[7] As well, when the Created began using the Guardians, entire fleets and orbital defense clusters were shut down by EMPs.[8]




Main article: UNSC Navy uniforms



During the Human-Covenant war, Navy personnel used M6D Personal Defense Weapon Systems.[9]


Main article: UNSC Starships

The UNSC frigate, the most common of the UNSC Navy ships.

The primary offensive armament of all UNSC capital ships is the Magnetic Accelerator Cannon (MAC). These weapons are massive coil guns that are used to accelerate projectiles ranging in mass from 600 tons in the case of smaller warships, and 3,000 tons in the case of Super MAC platforms, to extremely high velocities.

Almost all UNSC warships are equipped with Archer Missile pods for ship-to-ship engagements, which prove mostly effective against unshielded targets. UNSC ships in 2525 carried Fusion rockets as an offensive weapon but they seem to have been removed or replaced over the course of the war. UNSC ships may also carry Shiva-class Nuclear Missiles. In addition, the UNSC mounts 50mm auto-cannons on its ships for defense against enemy fighters and boarding craft, controlled by shipboard AIs. However, these auto cannons can be used against Covenant capital ships if the two ships are close enough, as displayed by UNSC Savannah during Operation: UPPER CUT.

H2A Cutscene UNSCHomeFleet

UNSC Home Fleet above Earth.

UNSC warships also carry significant Marine detachments for internal security, boarding actions, and planetary assault, and carry all the equipment and materiel needed by Marine forces. It is implied that a significant portion of the interior of UNSC warships are devoted to this purpose, as there are armories and barracks that hold these supplies.

Ships of the UNSC navy also carry a number of GA-TL1 Longsword-class Interceptor. These are armed with 110mm Rotary cannons and ASGM-10 Missiles, and sometimes a Moray space mine system or even a single Shiva-class Nuclear Missile. They can also be remotely-operated and used to carry a remotely-detonated Shiva missile, which, when detonated, effectively destroys both the Longsword and its selected target.

Despite all of this firepower, however, UNSC warships have great difficulty defeating Covenant ships even with a numerical advantage. It typically takes multiple hits from a ship-based MAC weapon to disable a Covenant ship's shields, although larger, ODP-based Super MACs can fire a round that can literally shatter Covenant capital ships.[10] Archer missiles must be used in tremendous amounts to breach Covenant shield systems. Even with their shields down, Covenant ships have been noted to remain operational after multiple direct hits from normal MAC rounds. This advantage in firepower and shielding gives the Covenant an effective 3:1 ratio and better against UNSC ships in combat.


Respirator packs are worn by UNSC Navy personnel when an atmosphere is not present, and provides an auxiliary supply of Oxygen for the wearer.



Main article: UNSC Naval Personnel

Naval Vessels and StationsEdit

The UNSC Navy is comprised of several known fleets constructed of many capital ships and single-ship craft. The UNSC Navy sustained heavy losses of materiél and personnel throughout the war against the Covenant, with many valuable assets being destroyed defending Reach, and a substantial portion of its surviving strength lost during the occupation of Earth by the Prophet of Truth.


Class Ship Name Status
Marathon-class heavy cruiser UNSC Canberra Unknown
UNSC Dresden Destroyed
UNSC Hannibal Destroyed
UNSC Io Destroyed
UNSC Leviathan Unknown, presumed destroyed
UNSC Marathon Unknown
UNSC Prophecy Destroyed
UNSC Say My Name Unknown, presumed Destroyed
Halcyon-class light cruiser UNSC Constantinople Destroyed
UNSC Dawn Under Heaven Destroyed
UNSC Halcyon Unknown
UNSC Pillar of Autumn Destroyed
UNSC Roman Blue Crashed on Eiro.
Autumn-class heavy cruiser UNSC Euclid's Anvil Active
UNSC Pillar of Autumn Unknown, presumed Active
UNSC Song of the East Active
UNSC Unto the Breach Active
Valiant-class super-heavy cruiser UNSC Everest Unknown, presumed destroyed/AWOL
UNSC Valiant Unknown
Heavy Cruiser UNSC Matador Destroyed
UNSC Swiftsure Unknown
UNSC Weeping Willows Destroyed
Unknown UNSC Chares Unknown
UNSC Endeavor Unknown


Class Ship Name Status
Diligence-class destroyer UNSC Diligence Unknown
UNSC Kronstadt Unknown, presumed active
Gorgon-class heavy destroyer UNSC Gorgon Unknown
Halberd-class destroyer UNSC Iroquois Unknown, presumed destroyed
UNSC Halberd Unknown
UNSC The Heart of Midlothian Destroyed
UNSC Pioneer Unknown
Hillsborough-class destroyer CMA Heracles Unknown
UNSC Hillsborough Unknown
Unknown UNSC Agincourt Destroyed
UNSC Armageddon's Edge Unknown
UNSC Brasidas Destroyed
UNSC Calcutta Unknown
UNSC Clearidas Unknown, presumed active
UNSC Do You Feel Lucky? Destroyed
UNSC Glasgow Kiss Destroyed
UNSC Herodotus Heavily damaged
UNSC Iwo Jima Destroyed
UNSC Jericho Heavily damaged
UNSC Lancelot Unknown, presumed destroyed
UNSC Las Vegas Unknown
UNSC Minotaur Destroyed
UNSC Persephone Unknown, presumed destroyed
UNSC Resolute Unknown
UNSC Seattle Moderately damaged
UNSC Tharsis Destroyed
UNSC Thermopylae Moderately damaged


Class Ship Name Status
Charon-class light frigate UNSC Aegis Fate Active
UNSC Charon Unknown
UNSC Chioglossa Destroyed
UNSC Forward Unto Dawn Destroyed
Unnamed frigate Unknown
Paris-class heavy frigate UNSC Commonwealth Decommissioned, in the process of being scrapped during the Fall of Reach
UNSC Grafton Destroyed
UNSC Paris Unknown
UNSC Saratoga Unknown
UNSC Savannah Destroyed
UNSC Virginia Capes Destroyed
Strident-class heavy frigate UNSC Eminent Domain Destroyed
UNSC Strident Unknown
Stalwart-class light frigate UNSC In Amber Clad Destroyed
UNSC Stalwart Dawn Unknown
Unknown UNSC Allegiance Destroyed
UNSC Andraste Active
UNSC Bellerophon Captured by Insurrectionists
UNSC Buenos Aires Destroyed
UNSC Euphrates Presumed destroyed
UNSC Fair Weather Destroyed
UNSC Gettysburg Presumed Undergoing Repairs
UNSC Meriwether Lewis Probably Destroyed
UNSC Midsummer Night Heavily Damaged
UNSC Providence Destroyed
UNSC Purpose Destroyed
UNSC Ready or Not Presumed Active
UNSC Redoubtable Presumed Destroyed
UNSC Tannenberg Presumed Destroyed
UNSC Tripping Light Decommissioned


Class Ship Name Status
Eclipse-class light prowler UNSC Eclipse Unknown
Sahara-class heavy prowler UNSC Aladdin Active
UNSC Port Stanley Active
UNSC Sahara Unknown
Winter-class light prowler ONI Acrisius Abandoned on Meridian. Likely destroyed or inoperable.
UNSC Winter Unknown
Unknown UNSC Apocalypso Destroyed
UNSC Applebee Unknown, presumed Active
UNSC Athens Unknown, presumed Active
UNSC Circumference Destroyed
UNSC Dusk Unknown, presumed Active
UNSC Edge of Umbra Unknown, presumed Active
UNSC Lark Unknown, presumed Active
UNSC Last Gleaming Unknown, presumed Active
UNSC Razor's Edge Unknown, presumed Active
UNSC Red Horse Unknown, presumed Active
UNSC Rubicon Missing
UNSC Tokyo Rules Unknown, presumed Active
UNSC Wink of an Eye Unknown, presumed Active


Class Ship Name Status
Fast-attack Corvette UNSC Two for Flinching Unknown, presumed Active
Unknown UNSC Bum Rush Unknown, presumed Active
UNSC Callisto Unknown, presumed Scrapped
UNSC Chalons Unknown, presumed Active
UNSC Coral Sea Unknown, presumed Active
UNSC Pony Express Unknown, presumed Active
UNSC Glamorgan Active

Colony ShipsEdit

Class Ship Name Status
Phoenix-class colony ship UNSC Spirit of Fire Active, listed MIA
UNSC Skidbladnir Scrapped
Odyssey-class colony ship Odyssey Successfully settled Reach.

Other ShipsEdit


Orbital Defense PlatformsEdit

Station Name Status
Cairo Station Heavily damaged
Athens Station Destroyed
Malta Station Destroyed
Nassau Station Active
Oaxaca Station Active

Other orbital facilitiesEdit

Station Name Purpose Status
Reach Station Gamma Orbital Drydock Destroyed

Mobile StationsEdit

Station Name Purpose Status
UNSC Cradle Refit/Repair Facility Destroyed
Station Delphi Shipyard Decommissioned
UNSC Hopeful Hospital Ship Unknown, probably active
Anchor 9 Unknown Destroyed

Remote Scanning OutpostsEdit

Station Name Status
Fermion Destroyed
Democritus Unknown
Archimedes Active
Tripoli Unknown

Medical StationsEdit

Station Name Status
ONI Medical Facility Unknown, presumed destroyed
M25L Recovery Station Unknown


UNSC Navy Officer Ranks
Ensign Lieutenant, Junior Grade Lieutenant Lieutenant Commander Commander Captain Rear Admiral (Lower Half) Rear Admiral (Upper Half) Vice Admiral Admiral Fleet Admiral
For the UNSC Navy Enlisted rank structure click here

UNSC Navy Enlisted Ranks
Crewman Recruit Crewman Apprentice Crewman Petty Officer Third Class Petty Officer Second Class Petty Officer First Class Chief Petty Officer Senior Chief Petty Officer Master Chief Petty Officer/Command Master Chief Petty Officer Master Chief Petty Officer of the Navy
For the UNSC Navy Officer rank structure click here


  • Many UNSC Navy traditions currently in use were also UN Navy traditions. Preceding the UN Navy, they were various United States Naval traditions.
  • Naval personnel are sometimes referred to as "swabbies." The term "swabbie" can be a joke or a sign of disrespect.
  • The UNSC Navy provides the rank structure for the Spartans.[2][11]




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