The Cherokee class, originally known as the Navajo class, was a class of fleet tugs built for the United States Navy prior to the start of World War II. They represented a radical departure from previous ocean-going tug designs, and were far more capable of extended open ocean travel than their predecessors. This was due in large part to their 205 feet (62 m) length, 38 feet (12 m) beam, and substantial fuel-carrying capacity. They were also the first large surface vessels in the US Navy to be equipped with diesel/electric drive.