Duda class large harbor tug (YTB) is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN), and has received NATO reporting name Duda class, with exact type still remains unknown. A total of eleven of this class have been confirmed in active service as of 2022 Unlike other tugs in Chinese service, This class is the only tug having a chimney with rectangular/square cross section, and thus easily distinguishable by the sharp edges of the chimney.
Ships of this class in PLAN service are designated by a combination of two Chinese characters followed by a three-digit number. The second Chinese character is Tuo (拖), meaning tug in Chinese, because these ships are classified as tugboats. 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 are subject to change due to changes of Chinese naval ships naming convention, or when units are transferred to different fleets. Specification: Length: 31 meter Type NATO designation Pennant No. Name(English) Name(Han 中文) Commissioned Displacement Fleet StatusDuda class large harbor tug (YTB) Duda class Bei-Tuo 632 North Tug 632 北拖 632 ? ? tNorth Sea Fleet <span style="color:green">Active</span style="color:green"> Bei-Tuo 681 North Tug 681 北拖 681 ? ? tNorth Sea Fleet <span style="color:green">Active</span style="color:green"> Bei-Tuo 685 North Tug 685 北拖 685 ? ? tNorth Sea Fleet <span style="color:green">Active</span style="color:green"> Bei-Tuo 769 North Tug 769 北拖 769 ? ? tNorth Sea Fleet <span style="color:green">Active</span style="color:green"> Dong-Tuo 874 East Tug 874 东拖 874 ? ? tEast Sea Fleet <span style="color:green">Active</span style="color:green"> Dong-Tuo 876 East Tug 876 东拖 876 ? ? tEast Sea Fleet <span style="color:green">Active</span style="color:green"> Dong-Tuo 878 East Tug 878 东拖 878 ? ? tEast Sea Fleet <span style="color:green">Active</span style="color:green"> Dong-Tuo 879 East Tug 879 东拖 879 ? ? tEast Sea Fleet <span style="color:green">Active</span style="color:green"> Nan-Tuo 172 South Tug 172 南拖 172 ? ? tSouth Sea Fleet <span style="color:green">Active</span style="color:green"> Nan-Tuo 176 South Tug 176 南拖 176 ? ? tSouth Sea Fleet <span style="color:green">Active</span style="color:green"> Nan-Tuo 177 South Tug 177 南拖 177 ? ? tSouth Sea Fleet <span style="color:green">Active</span style="color:green">
References