Thunder Class Battlecruiser

(to all who read this... this is a fan made ship of my design not a real unsc ship)
The Thunder Class Battlecruiser was first designed before the fall of reach by a ONI agent and a spartan 1. the spartan 1 died on Sargasso while the ONI agent survived and started the building process after getting the green light from ONI higher ups. several months into the process they ran into the first major setback which was ONI having the Infinity class supercarriers built making most of the workforce transfer to work on the supercarriers after 9 more months of work the ship was halfway complete. in early 2556 the first Thunder Class Battlecruiser was finished its first mission was to protect a new colony that had reports of covenant attacks the first ship named the UNSC thunderstruck arrived out of slipspace and single handedly eliminated 4 SDV-class heavy corvettes and 1 CRS class frigate