Capital ship

There is more information available on this subject at Capital ship on the English Wikipedia.

Capital ships are the most important and largest warships; the ones with the heaviest firepower and armor. There is usually no formal criterion for the classification, other than the fact that these ships tend to be heavily armed and armored. Despite the vagueness of this category, however, it is still a useful concept when thinking about strategy, for instance to compare relative naval strengths in a theater of operations without having to get bogged down in the exact details of tonnage and gun variants. A capital ship is generally a leading or primary ship in a fleet, battlegroup, or Strike Force.

Forerunner

Main article: Forerunner Navy

These are all of the currently known Forerunner ships that fall into the Capital Ship category. They are as well listed with the era they are known to be used as Capital Ships:

Keyships

Image	Name	Era(s)
	Dreadnought-class Keyship	Forerunner-Flood war Sangheili-San 'Shyuum war Human-Covenant war

Warships

Image	Name	Era(s)
N/A	Fortress-class warship	Forerunner-Flood war
	Dreadnought-class warship	Forerunner-Flood war Human-Covenant war

Siege Ships

Image	Name	Era(s)
N/A	Planet-breaker-class siege ships	Forerunner-Flood war

Covenant/Remnant/Separatists

Main article: Covenant Navy

These are the classifications of Covenant warships known to fall under the Capital Ship category. They are as well listed with the era they are known to be used as Capital Ships:

Cruisers

Image	Name	Era(s)
	CCS-class battlecruiser	Human-Covenant war Great Schism
N/A	Reverence-class cruiser	Human-Covenant war Great Schism
	Covenant supercruiser	Human-Covenant war
	RCS-class armored cruiser	Human-Covenant war Post-War Era
	ORS-class armored cruiser	Human-Covenant war
	CRS-class light cruiser	Human-Covenant war Post-War Era

Carriers

Image	Name	Era(s)
	CSO-class supercarrier	Human-Covenant war
	CAS-class Assault Carrier	Human-Covenant war Post-War Era
N/A	DDS-class carrier	Human-Covenant war Great Schism

Battleships

Image	Name	Era(s)
	Covenant battleship	Human-Covenant war

UNSC

Main article: UNSC Navy

These are the classifications of UNSC warships known to fall under the Capital Ship category. They are as well listed with the era they are known to be used as Capital Ships:

Cruisers

Image	Name	Era(s)
	Halcyon-class light cruiser	The Insurrection Human-Covenant war
	Marathon-class cruiser	Human-Covenant war
N/A	Valiant-class supercruiser	Human-Covenant war
	Autumn-class heavy cruiser	Post-War Era

Carriers

Image	Name	Era(s)
N/A	Punic-class supercarrier	Human-Covenant war
N/A	[[Epoch-class heavy carrier|Epoch-class Heavy Carrier	Human-Covenant war
	Poseidon-class light carrier	Post-War Era

Multi-Role

Image	Name	Era(s)
	Phoenix-class colony ship	The Insurrection Human-Covenant war
	Infinity-class warship	Post-War Era

Battleship

Image	Name	Era(s)
	Vindication-class light battleship	Post-War Era