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Aegis-class frigate
Aegis-class Frigate
Production information

Aegis-class Frigate


Fleet Escort Frigate (FEF)

Technical specifications

250 meters

Power plant

Deuterium (2H) fusion reactor

  • Ultrashort petawatt excitation lasers
  • Magnetic confinement fields

Titanium-Molybdenum Carbide alloy

  • Mark IV Magnetic Accelerator Cannon (1)
  • Aegis-class Free-Electron Laser Turret (1)
  • SSM-42 Crossbow-class Missile Pods (20)
  • Mk. 16 Flurry-class Close-In Weapon Systems (40)
  • Escort Frigate
  • Air Defense Frigate
  • Guided Missile Frigate

Galactic Era




The Aegis-class frigate, colloquially known as the Aegis-class fleet escort, was a light frigate classification operated by the UNSC Navy during the Galactic Era. Lightly armed, the Aegis-class frigates were largely relegated to anti-fighter and anti-missile roles, acting as escorts to UNSC task forces.


The Aegis-class frigate was the result of a futuristic iteration in UNSC naval doctrine; while its predecessor, the UNSC Frigate of the Human-Covenant War, was a highly armed attack ship, during the Galactic Era, the UNSC Navy would largely sponsor the Mjöllnir-class destroyers and Cyclops-class main battle cruisers in these attack roles. Instead, the Aegis-class frigate would play a supplementary and auxiliary role, providing specialized anti-fighter and anti-missile activities for UNSC task forces.

The frigate was smaller than its predecessor, nearly half the size of the 478-meter-long UNSC Frigate. Its novel primary battery was a Aegis-class free-electron laser turret, a futuristic and high-powered point-defense laser optimized for intercepting enemy missiles and enemy fighters at longer ranges. The free-electron laser is also active against Covenant plasma torpedoes; by superheating the plasma charge, it induces thermal incoherency that leads to disintegration of the torpedo even despite a guiding magnetic field. Furthermore, the frigate bristled with forty Mk. 16 Flurry-class Close-In Weapon Systems against enemy fighters and missiles at closer ranges.

Although optimized for a point-defense role, the Aegis-class frigate also carried secondary armaments against capital ships; these included a single Mark IV Magnetic Accelerator Cannon and twenty SSM-42 Crossbow-class Missile Pods.

Twenty-four starfighters (two full squadrons) were also carried on board to supplement its anti-fighter role; these fighters often consisted of the agile F506 Piranha-class interceptors.

Ships of the Line

Aegis-class frigates were conventionally named after defensive pieces of armor or in remembrance of past battles in UNSC history:

Behind the Scenes

  • The Aegis-class frigate classification was named after the Aegis, the legendary shield of Pallas Athena in Greek mythology, reflecting the frigate's largely defensive role in standard fleet doctrine.

UNSC Navy (Galactic Era)
Carriers Cydonia-class fleet carrier
Cruisers Atlantis-class dreadnought · Cyclops-class main battle cruiser
Destroyers Mjöllnir-class destroyer
Frigates Aegis-class frigate
Corvettes Hermes-class gunship · Oracle-class prowler
Interceptors EF449 Preying Mantis-class interceptor · F506 Piranha-class interceptor · F779 Predator-class interceptor
Bombers BQ3 Specter-class stealth bomber · B82 Tigershark-class bomber
Individual Vessels UNSC Cydonia · UNSC Heimdall · UNSC Heracles · UNSC Meridian Dream · UNSC Melpomène · UNSC Vishnu
Commands UNSC Fifth Fleet · Task Force Phoenix
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