Built in 1999, by Marco Shipbuilding of Seattle, Washington (hull #483) as the Delta Deanna for Bay and Delta Marine Services Incorporated of San Francisco, California.
In 2009, the tug was chartered by the Signet Maritime Corporation of Houston, Texas. Where she was renamed as the Signet Enterprise.
In 2009, the Signet Maritime Corporation acquired the tug. Where she retained her name.
On August 26th, 2017 due to winds and currents caused by the passage of Hurricane Harvey. While attempting to hold an oil rig in postion. The tug collided with a nearby oil rig and partially sank near Port Aransas, Texas. And, the tug was raised, and salvaged.
In 2019, the tug was acquired by the Coos Bay Towboat Company of Coos Bay, Oregon. Where she was renamed as the Cygnet and was "laid up" at Coos Bay, Oregon.
Powered by two, Caterpillar 3516B diesel engines. With two Ulstein 1650H z-drives, fitted with 94.5(in)2,400(mm), four bladed NIBRAL propellers. For a rated 5,500 horsepower.
Her electrical service is provided by two, 105kW Caterpillar 3304 generator sets. The tug's capacities are 103,181 gallons of fuel, and 7,000 gallons of potable water.
The towing equipment consists of a Burrard Iron Works HE winch. Outfitted with 600(ft) of 2.75(in) Saturn 12 HMPE hawser, mounted on the bow. And, a double drum Burrard Iron Works HJD towing winch outfitted with 2,000(ft) 2.25(in) of hawser on one drum, and 2,200(ft) of 2(in) hawser on the secondary drum.