UNSC Hull Classification System

There is more information available on this subject at Hull Classification Symbol on the English Wikipedia.
A hull classification symbol, alternatively known as a hull code, or even a registry, is an identifying IFF code, which is assigned to s of the . The various types and sizes of ships, both military and civilian, have different hull codes to differentiate them at a glance on sensors. The hull codes are composed of both a symbol and a hull number. While the symbol is non-unique, hull numbers typically are, though examples exist contrary to convention.
Typically, hull numbers assigned to ships of a given type consecutively, though number sequences may, and often are, skipped for a variety of reasons. These could be due to planned ships that were never commissioned, to plain simple bureaucratic maneuvering. The reverse can also occur, with older numbers which may be reused on new ships to "inherit" the identity of any particular storied vessel. A famous example of this is the Pillar of Autumn II, named for the Pillar of Autumn, and the namesake for the Autumn-class Heavy Cruisers.
The and its remnants use their own distinct system for identifying their vessels. These hull codes, by Covenant reckoning are designed around identifying a ship by it's primary, secondary, and then tertiary tasks/roles and features within their fleets.
__NOTOC__
{| class="article-table mw-collapsible" align="left" style="background:rgba(0, 0, 0, 0.0); border:1px solid #0023D3; font-size:100%"	Table of Contents
#Ships of the Line
##Escort Ships
###Frigates
###Destroyers
###Cruisers
##Capital Ships
###Carriers
###Battleships
##Non-rates
###Prowlers
###Corvettes
##Support Ships
###Hospital Ships
###Repair Ships
###Ammunition Ships
#List of Known Symbols
##UNSC Navy
#Trivia
#See Also