List of cruiser classes of the United Nations Space Command

This list of cruiser classes of the United Nations Space Command is a detailed list of the cruiser classes of the UNSC.
==Interplanetary Era cruiser classes==
====Expeditious-class====
*Dimensions: 720 meters 
*Armament: 48 × missile launchers (48 × RSM-3/RSM-4 missiles), 20 × 50mm point defense guns
*Armor: 26cm Standard Plate
*Complement: 57 personnel 
*Ships in class: 7: Expeditious, Courageous, Audacious, Intrepid, Gallant, Daring, and Valiant
*Commissioned: 	July 7, 2163 
*Fate: Retired, 2231
The Expeditious-class was the first class of space cruisers produced, and had a significant effect on cruiser designs for well over a hundred years. At the time of its completion, the UNSC Expeditious was the most powerful warship ever built, outgunning any then-contemporary warship 4:1. The Expeditious won lasting fame at the Battle of Mars, leading the UN battle fleet to a crushing victory over the Koslovics in December 2163. The class served with distinction throughout the Interplanetary War, and remained in service after the war. The class was ultimately retired following the introduction of the larger interplanetary cruisers of the 2230s, almost seven decades after their introduction. 
====Tenacious-class====
*Dimensions: 752 meters 
*Armament: 52 × missile launchers (52 × RSM-3/RSM-4 missiles), 26 × 50mm point defense guns 
*Armor: 30cm Standard Plate
*Complement: 59 personnel 
*Ships in class: 6: Tenacious, Stalwart, Indomitable, Resolute, Fearless, and Implacable
*Commissioned: February 2, 2165 
*Fate: 
The Tenacious-class comprised six cruisers built along the lines of the previous Expeditious-class; thirty-two meters longer than their predecessors, these warships carried marginally greater armaments and were fitted with thicker hull plating. 
====Formidable-class====
*Dimensions: 858 meters 
*Armament: 168 × missile launchers (168 × RSM-3/RSM-4 missiles), 42 × 50mm point defense guns 
*Armor: 38cm Standard Plate 
*Complement: 79 personnel 
*Ships in class: 6: Formidable, Inexorable, Dauntless, Redoubtable, Adamant, and Relentless
*Commissioned: September 21, 2166
*Fate: 
The Formidable-class of cruisers were markedly different from both Expeditious and Tenacious classes: more than a hundred meters longer, the six cruisers of the Formidable class carried 168 missiles, easily three times as many as the preceding class. Complimenting its impressive arsenal with increased armor plating and significantly more point defense guns, the Formidable-class cruiser was designed to outgun and outfight any contemporary cruiser or destroyer in service.
====Peacemaker-class====
====Peacekeeper-class====
==Interstellar Era cruiser classes==
====Safeguard-class====
====Halcyon-class====
====Marathon-class====
====Valiant-class====