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Hull classification symbol

From Halopedia, the Halo wiki

A hull classification symbol,[1] also known as a hull code[2][3] or a registry,[4][5] is assigned to UNSC starships of the UNSC Navy. Different types and sizes of ship have different codes.[1] The hull code is composed of a symbol and a hull number. The hull numbers are usually assigned to each ship consecutively, though number sequences may be skipped for a variety of reasons (planned ships that were never commissioned or bureaucratic maneuvering, for example) and older numbers may be reused for new ships in order to "inherit" the identity of a particular storied vessel.[6]

The Covenant and its splinter factions use their own system of three-letter classification codes which are assigned based on a ship's "Primary", "Secondary", and "Tertiary" features.[1]

List of known symbols[edit]

UNSC Navy[edit]

  • AC: Unspecified Frigate


  • A - meaning currently unknown.
  • C - meaning currently unknown.
  • D - meaning currently unknown.
  • O - Ordained signifies Forerunner technology incorporated into the vessel.
  • P - meaning currently unknown.
  • R - Reverence signifies that a ship can conduct reconnaissance missions, and is able to recover Forerunner artifacts.
  • S - Salvation signifies that a ship possesses dedicated ship-to-ship combat capability.
  • V - meaning currently unknown.


The symbol is based on the hull classification symbol system used by the United States Navy in the 20th and 21st centuries with a few differences.


  1. ^ a b c d e Halo Waypoint: Canon Fodder - Have S'moa
  2. ^ a b c Halo: Warfleet, p. 46-47
  3. ^ Halo: Official Spartan Field Manual, PART 1: INTRODUCTIONS, UNSC Infinity Layout (p. 14 & 15)
  4. ^ Halo 4: The Essential Visual Guide, Ships, p. 186-189
  5. ^ Halo: The Essential Visual Guide, p. 162
  6. ^ Halo Waypoint: Canon Fodder - Sweet Centennial
  7. ^ Section 3 Old Chat Record: Page 99
  8. ^ Halo: Combat Evolved: Sybex Official Strategies & Secrets, p. 60
  9. ^ Bungie Weekly Update: 01.29.10
  10. ^ Halo: Warfleet, p. 26
  11. ^ a b c Halo Legendary Crate, Data Drop #2
  12. ^ IGN.com: Halo 4 - "Adrift" Multiplayer Map Walkthrough With 343i
  13. ^ Halo: Warfleet, p. 40
  14. ^ Halo Mythos, p. 82-83
  15. ^ Halo: Warfleet, p. 19
  16. ^ Halo: Warfleet, p. 50-51
  17. ^ Halo Waypoint: The Halo Bulletin: 10.10.12
  18. ^ a b Halo: Warfleet, p. 17