The Sierra-Class is a type of starship in the fictional universe of Star Trek. Introduced in the late 24th century, these vessels are primarily used for scientific research and exploration. They are known for their advanced sensor systems and capabilities, making them ideal for deep-space missions. Sierra-Class starships are equipped with a variety of laboratories and facilities to support scientific endeavors. They typically have a smaller crew compared to larger classes, allowing for a more focused team on research projects. The design emphasizes versatility and adaptability in various environments, contributing to the overall mission of exploration in the Star Trek franchise.