The Dupo class is a class of little known large harbor tugs (YTB) built in the People's Republic of China (PRC) for the People's Liberation Army Navy (PLAN).^[1][2][3][4] The exact domestic Chinese type designation remain unknown, and this class is identified by its NATO reporting name Dupo class,^[1][2][3][4] or 渡泊 in Chinese, meaning Crossing & Mooring.

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Quick Facts History, PRC ...

History
PRC
Status	Active
General characteristics
Class and type	Dupo
Type	Large harbor tug (YTB)
Length	37 m (121 ft 5 in)
Propulsion	Marine Diesel
Sensors and processing systems	Navigation radar

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Specification:^[1][2][3][4]

• Length: 37 meters (121 ft 5 in)

The Dupo class in PLAN service is designated by a combination of two Chinese characters followed by three-digit number. The second Chinese character is Tuo (拖), meaning Tug in Chinese. The first Chinese character denotes which fleet the ship is service with, with East (Dong, 东) for East Sea Fleet, North (Bei, 北) for North Sea Fleet, and South (Nan, 南) for South Sea Fleet. However, the pennant numbers may have changed due to the change of Chinese naval ships naming convention. As 2022, nearly a dozen ships have been identified:^[1][2][3][4]