Chinese float-on/float-off ship Donghai Island

History
PRC
Name	Donghai Island
Namesake	Donghai Island
Completed	2015
Commissioned	July 10, 2015
In service	July 10, 2015
General characteristics
Class and type	Modified Hansa Sonderberg class
Type	Float-on/float-off semi-submersible
Displacement	23,000 long tons (23,000 t)
Length	32.4 m (106 ft 4 in)
Beam	175.5 m (575 ft 9 in)
Electronic warfare & decoys	None
Armament	Unarmed
Aircraft carried	None
Aviation facilities	None

Chinese float-on/float-off Donghai Island is the first unit of a class of very little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN).^[1]The exact type remains unknown, and only a single unit of this class have been confirmed in active service as of 2020s, with pennant number 868.^[1] The float-on/float-off capability of the Donghai class is achieved via its semi-submersible hull design.^[1]This ship has received NATO reporting name Modified Hansa Sonderberg class,^[2][3][4]because it's derived from Hans Sonderberg class AHT designed specifically for heavy-lifting and transporting large and heavy equipment such as oil rigs, and Donghai Island float-on/float-off ship performs similar functions.

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