Pictured as: the Gretchen C. (Curtin Maritime) Photo Courtesy of: Curtin Maritime

Built in 1983, by Patti Shipbuilding Incorporated of Pensacola, Florida (hull #111) as the Navasota for Tow Boat Services and Management Incorporated of Honolulu, Hawaii.

In 1991, she was acquired by the Smith Maritime Company of Honolulu, Hawaii. Which was a part of the Hawaiian Interisland Towing Company of Honolulu, Hawaii. Where she was renamed as the Nohea.

In 2007, the Smith Maritime Company was acquired by the K-Sea Transportation Partnership Incorporated of East Brunswick, New Jersey. Where the tug retained her name.

In 2011, the K-Sea Transportation Partnership Incorporated was acquired by the Kirby Corporation of Channelview, Texas. Where the tug retained her name.

In 2019, she was acquired by the Curtin Maritime Corporation of Long Beach, California. Where the tug was renamed as the Devon C.

In 2020, the tug was phased out of active service and was "laid up" at Long Beach, California.

In 2025, the Curtin Maritime Corporation renamed the tug as the Gretchen C.

Originally powered by two, sixteen cylinder, Caterpillar D-399 diesel engines. Turning two, cast steel, fixed pitch, propellers. She was a twin screw tug, rated at 2,800 horsepower.

In 2025, the tug was repowered with two Tier IV compliant, Cummins QSK380-M2 diesel engines. With Reintjes WAF 675L reduction gears, at a ratio of 7.091:1. Turning two, cast steel, fixed pitch, propellers. She is a twin screw tug, rated at 3,000 horsepower.

Her electrical service was originally provided by two, 50kW generator sets. In 2025, the tug was outfitted with two John Deere 4045AFM85E generator sets. The tug's capacities are 71,548 gallons of fuel, 591 gallons of lube oil, and 7,702 gallons of fresh water.

The towing equipment consists of a single drum, Markey towing winch. Outfitted with 2,700(ft) of 1.75(in) towing wire. With two, Pullmaster M50 auxiliary winches. And two, Wintech 120HL-E10-17 face winches.

Photo by: Captain Rick Wilson