Type 917 rescue ship (ARS) is a type of rescue and salvage ship developed by China for its People's Liberation Army Navy (PLAN). A total of two ships have entered service by mid-2014, and more units are planned. Type 917 is the first ship in PLAN to adopt a trimaran hull, and hence received NATO reporting name Dasan class,[1][2][3][4][5] or 大三 in Chinese, which is short for Da-xing (大型) San-ti-chuan (三体船), meaning Large Trimaran.

History
PRC
OrderedLate 2000s
AwardedEarly 2010s
Laid downEarly 2010s
LaunchedEarly 2010s
Completed2012
Commissioned2012
StatusActive
Class overview
Operators People's Liberation Army Navy
Preceded byType 922IIIA rescue & salvage ship
Built2012 onward
General characteristics
Class and typeDasan class
TypeRescue ship (ARS)
Displacement550 t (540 long tons; 610 short tons)
Length76 m (249 ft 4 in)
PropulsionMarine Diesel
Sensors and
processing systems
Navigation radar
Electronic warfare
& decoys
None
Armament30 mm gun x 1
ArmourNone
Aircraft carriedNone
Aviation facilitiesNone

The advantage of trimaran include stability and high speed in rough seas, and large deck area equivalent to much larger ship, thus enabling small ship to carry helicopter that can only be carried by larger ships in traditional monohull design. Designed by the Multihull Ship Technology National Defense Important Academic Majors Laboratory (多体船技术国防重点学科实验室) of Harbin Engineering University, Type 917 carries a pair of newly designed rescue boat, with one on each side, stored in the davit position.[6] The ship is equipped with a newly designed H/PJ14 single 30 mm gun controlled by electro-optical sensor.[7] Type 917 series in PLAN service are designated by a combination of two Chinese characters followed by three-digit number. The second Chinese character is Jiu (救), meaning rescue in Chinese, because these ships are classified as rescue ship. 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. Specification:[1][2][3][4][5]

  • Length: 76 meter
  • Displacement: 550 ton
Type Pennant # Commissioned Status Fleet
917 Bei-Jiu 143 2012 Active North Sea Fleet
917 Dong-Jiu 335 Active East Sea Fleet
917 Nan-Jiu 511 Active South Sea Fleet

References

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  1. ^ a b "PLANS recognition guide 2018". July 16, 2018.
  2. ^ a b "PLANS recognition guide 2019". February 19, 2020.
  3. ^ a b "PLANS recognition guide 2020". February 19, 2020.
  4. ^ a b "PLANS recognition guide 2015". August 7, 2015.
  5. ^ a b "Type 917 rescue ship (ARS)" (in Simplified Chinese). April 11, 2013.
  6. ^ Type 917 rescue ship
  7. ^ Type 917 ARS