The first USS Sunnadin (AT-28), a tug, was laid down on 3 December 1918 at the Puget Sound Navy Yard as Katahdin; renamed Sunnadin on 24 February 1919; launched on 28 February 1919; and commissioned on 20 October 1919. It was named for an Anglicized spelling of the Huron Indian town Sunyendeand.

History
United States
Name	Sunnadin (AT-28)
Namesake	Huron Indian town Sunyendeand
Builder	Puget Sound Navy Yard
Laid down	3 December 1918 as Katahdin
Launched	28 February 1919
Commissioned	20 October 1919
Decommissioned	4 April 1946
Renamed	Sunnadin on 24 February 1919
Stricken	8 May 1946
Fate	Sold for scrap, 15 January 1947.
General characteristics
Class and type	Bagaduce class
Displacement	1,000 (est.)
Length	156 feet 8 inches
Beam	30 feet
Draft	14 foot 7 inches (mean)
Speed	13.0 kts (est.)
Complement	44
Armament	1 mg.

Sunnadin was assigned to the 14th Naval District and spent almost a quarter of a century in the Hawaiian Islands operating from Pearl Harbor, towing Navy ships and other sea-going craft between ports in the district. During that time, she changed designations twice. On 17 July 1920 when the Navy first adopted alphanumeric hull designations, she became AT-28.

She was in Pearl Harbor during the Japanese attack there on 7 December 1941. On 15 May 1944, she was redesignated ATO-28. In the fall of 1945, Sunnadin was ordered to report to the Commandant, 12th Naval District, for decommissioning and disposal. Sunnadin was decommissioned on 4 April 1946. Her name was struck from the Navy list on 8 May 1946. On 15 January 1947, she was delivered to the Maritime Commission at Mare Island, California, for disposal.