Large ships are frequently found in the 50-150m length range. These ships can be operated with a skeleton crew, but really require an experienced medium to large crew working together as a unit throughout the mission to achieve their goals. Maintenance and repair costs often become a significant factor in this size bracket. Large ships usually require M (56 x 88 x 18 m) or L (72 x 128 x 36 m) pads.
Next larger category is capital ships. Smaller is medium ships.