Antoher Bad boy here
It could be listed as
ATF=Fleet Ocean Tug Boat
ATR=Armed Trawler
The
Cherokee class of
fleet tugboats, originally known as the
Navajo class, were built for the
United States Navy prior to the start of
World War II.
[2] 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 United States Navy to be equipped with
Diesel-electric drive.
[2]
The first three vessels,
Navajo,
Seminole and
Cherokee, were constructed from 1938 to 1940 at the Staten Island Shipyard division of Bethlehem Steel Corporation.
Navajo and
Seminole joined the Pacific fleet in 1940, and
Cherokee went to the Atlantic fleet.
Navajo was en route to
San Diego from
Pearl Harbor on 7 December 1941, and immediately reversed course to Pearl Harbor once news broke of the
Japanese attack. She became a critical element of salvage operations there, as did her
sister ship Seminole, in the days following the attack.