History
PRC
Status	Active
General characteristics
Class & type	Duda class
Type	Tug
Length	31 m (101 ft 8 in)
Sensors & processing systems	Navigation radar
Electronic warfare & decoys	None
Armament	Unarmed
Aircraft carried	None
Aviation facilities	None

Duda class large harbortug (YTB) is a class of little known navalauxiliary ship currently in service with thePeople's Liberation Army Navy (PLAN),^{[1][2][3][4][5]} and has receivedNATO reporting nameDuda class,^[2][3][4][5] with exact type still remains unknown.A total of eleven of this class have been confirmed in active service as of 2022^{[1][2][3][4][5]} 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.^[1]

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 astugboats. The first Chinese character denotes which fleet the ship is service with, with East (Dong, 东) forEast Sea Fleet, North (Bei, 北) forNorth Sea Fleet, and South (Nan, 南) forSouth 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:^[2][3][4][5]

• Length: 31 meter

• Auxiliary tugboat classes
• Auxiliary ships of the People's Liberation Army Navy

• Articles with short description
• Short description matches Wikidata
• Ship infoboxes without an image