The Constitution-class was a Federation Starship-class, Class I Heavy Cruiser. They were the premier frontline Starfleet vessels in the latter half of the 23rd century.




They were designed for long duration missions with minimal
outside support and were best known for their celebrated missions of
galactic exploration and diplomacy, and were capable of operating on five-year mission cycles.




Credit: https://memory-alpha.fandom.com/wiki/Constitution_class