Type 911 degaussing/deperming ship

Type 911 degaussing/deperming ship is the newest class of degaussing/deperming ship currently in service with the People's Liberation Army Navy (PLAN).

Plans for Type 911 originated from PLAN requirement over several decades ago but due to the backwardness of Chinese industrial capability and technical bottleneck, the requirement was simply too advanced to achieve at the time for China. Furthermore, the political turmoil in China at the time, namely, Cultural Revolution, further disrupted any effort to push the program forward. As a result, the production plan was cancelled and the entire program was put on hold. It was not until more than a quarter century later when the social, economical and political environment in China matured enough to resurrect the program and as of mid 2014, two units have been completed.

The first ship of Type 911 degaussing/deperming ship was completed in Shanghai by Shenjia Shipyard (申佳船厂), also known as the 4805th Factory of PLAN in Shanghai. Construction begun in 1995 and was completed more than two years later. Design of Type 911 incorporates electrical components and VLSI from Siemens, and the ship can reach a speed of 16 kt.^[1] New features utilized includes centralized computerized control which can automatically control speed and degaussing/deperming system. This control system is dubbed as Full Digitized Programmable Control and it is the first of its kind to be adopted on ships in China. The advanced control system onboard enables Type 911 to complete degaussing/deperming mission in much shorter timespan, reducing the time by as much as more than two days in comparison to degaussing/deperming ships of older designs when performing mission for ships of the same tonnage. After first unit went into service in South Sea Fleet, a second unit was completed by Dalian Niaonan Shipyard (大连辽南船厂), also known as 4810 Factory of PLAN, went into service in East Sea Fleet two years later.^[2] More units are planned, but it is rumored that the pace of the program is significant slowed because plans of domestic production of onboard system encountered technical difficulties, but such claims (mostly from Chinese internet sources) have yet to be confirmed by official or independent sources.

Type 911 series in PLAN service are designated by a combination of two Chinese characters followed by three-digit number. The second Chinese character is Qin (勤), meaning service in Chinese, because these ships are classified as service 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.

Type	Pennant #	Builder	Launched	Commissioned	Status	Fleet
911	Nan-Qin 203	Shanghai Shenjia Shipyard	1995	Jan 15, 1998	Active	East Sea Fleet
911	Dong-Qin 870	Dalian Liaonan Shipyard	After 2000	2009	Active	East Sea Fleet

References

Ship classes of the People's Liberation Army Navy

List of active ships

Submarines
(list)

Nuclear
ballistic missile (SSBN)

Nuclear attack (SSN)

Conventional
ballistic missile (SSB)

Conventional
attack (SS/SSK)

Air-independent propulsion equipped submarine (SSI/SSP)	Type 039A/AG/B/C (Type 041)Yuan class

Hunter-killer submarine (SSK)	Type 039/039G Song class Project 636 Kilo II class Project 877EKM Kilo I class ES5E/F and Type 035G/035ET/035B Ming class

Medium submarines (SS)	ES5C/D and Type 035/035A Ming class Project 633⁺/Type 6633⁺/033⁺/ES5A⁺/ ES5B⁺/Romeo class Type 033G⁺ Wuhan class Type 033G1 Wuhan-A class⁺ S class⁺

Midget submarines (SSM)	M class⁺ Type 032⁺ Type 032-1⁺ Type 030⁺

Principal
surface
combatants

Aircraft carriers (CV)	Chinese aircraft carrier programme Type 002 class* Type 001A class* Type 001 class Liaoning (16)

Cruisers (CL)	Arethusa class: HMS Aurora (12)⁺

Destroyers (DDG)	Type 055 class^* Type 052D class Type 052C Luyang II (Lanzhou) class Type 052B Luyang I class Type 052 Luhu class Type 051C Luzhou class Type 051B Luhai class Type 051DT Luda IV class Type 051G1/G2 Luda III class Type 051 Luda II class Type 051 Luda I class⁺ Project 956EM Sovremennyy II class Project 956 Sovremennyy I class Anshan class⁺

Frigates (FFG)	Type 054B class^* Type 054A Jiangkai II class Type 054 Jiangkai I (Ma'anshan) class Type 053H3 Jiangwei II class Type 053H2G Jiangwei I class Type 053H1G Jianghu V class Type 053H1Q Jianghu IV class Type 053H2 Jianghu III class Type 053H1 Jianghu II class Type 053H Jianghu I class

Coastal
warfare
vessels

Corvettes (FS)

Submarine chasers (PCSC)

Coastal defence ships (K)

Armed merchantman (SP)

Ruijin class⁺
Naval trawlers

Missile boats (PCM)

Torpedo boats (PT)

Type 6625/025/026/026II/R704 Huchuan class
Type 027/027IIB Huzhou class⁺
Type 6602/6702/02/7102II⁺
P4 class⁺
P6 class⁺
P8 class⁺

Gunboats (PG)

Seagoing	Type 062-I Shanghai III class Type 062 Shanghai II class Type 062 Shanghai I class Type 206 Huludao class Type 55/55AShantou class⁺ Beihai class⁺ Type 53/53A/54AHuangpu class⁺ Yulin class⁺ Hashidate-class gunboat⁺ Type 0101⁺ Type 0105⁺ Type 0109⁺ Type 0112⁺ Type 52/52A⁺

Riverine (PBR)	Atami class⁺ Falcon class⁺ Fushimi class⁺ Minquan class⁺ HMS Gannet⁺ Seta class⁺ Toba class⁺

Patrol boats (PB)

Seagoing	Type 026H

Reconnaissance patrol combatant (PGR)	Type 528 Type 865

Amphibious
warfare
vessels

Landing helicopter dock (LHD) or
Landing helicopter assault (LHA)

Type 075 LHA/LHD ? class^*

Amphibious transport dock (LPD)

Type 071 Yuzhao class

Dock landing ship (LSD)

Landing ship helicopter (LSH)

Landing ship tank (LST)

Landing ship medium (LSM)

Landing craft (LC)

Landing craft infantry (LCI)	LCI(L)⁺

Landing craft mechanized (LCM)	Type 363/363A/55 LCM⁺

Landing craft tank (LCT)	Type 068/069 Yuch'in class Type 067 Yunnan class Type 066/066K/066A Yuzhai class⁺ LCT Mk 5 & Mk 6⁺

Landing craft utility (LCU)	Type 271-I Yupen class⁺ Type 271-II⁺ Type 271-IID⁺ Type 271III Type 074 Yuhai (Wuhu-A) class LCU 1600 series⁺

Air-cushioned
Landing Craft (LCAC)

Mine warfare
vessels (MCM)

Minelayers (ML)	Type 918 Wolei class Sokuten class⁺

Minehunters (MH)	Type 081 Wochi class Type 081A Type 082 Wosao class Type 082II Wozang class

Minesweepers (MS)	Type 057K Lianyun class⁺ Type 010 Type 6605⁺ Type 6610⁺ Type 05 T-43 class⁺ Type 058⁺ Type 7102⁺ Type 062 Fushun class⁺

Minesweeping drone (MSD)	Type 529 Type 312 Futi class

Auxiliary
vessels

Ammunition
ships (AE/AEM)

Ammunition ship (AE)	400t-class Yantai class

Ammunition ship, Missile/Rocket (AEM)	Yuan Wang 21 Yuan Wang 22

Buoy tenders (AGL)

Cargo ships (AK)

Cargo ships (AK)	Danlin class Dandao class Galați class Qiongsha class

Flow-on/flow- off ship (AKF)	Donghai Island class

General stores issue ships (AKS)	Type 904 Dayun class Type 904A Type 904B

Reefer ships (AF)	Dongdao class Dongleng class

Roll-on/roll- off ship (AKR)	Type 701

Self-propelled lighter/barge (YF)	500 cubic meter class barge Dongbo 22 class Dongbo 39 class

Degaussing /
deperming ships (ADG)

Dive tenders (YDT)

Engineering
ships

Cable layers (ARC)	Type 890 Youzheng class Type 911II Type 991I Type 991II Youdian class

Crane ship (AB)	Beiqi 346 class Beiqi 384 class

Dredgers (AGD)	8-m³ class Beijun 204 class Dongjun 417 class Dongjun 433 class Dongjun 434 class Nanjun 610 class

Floating pile drivers (YPD )	36-m class floating pile driver Donggong 429 class Nangong 681 class

Hospital ships (AH)

Hospital ships (AH)	Type 920 hospital ship

Medical evacuation ships (AHP)	Zhuanghe

Ambulance transports (APH)	Qiongsha class

Ambulance craftd (YH)	Beiyi 01 class

Icebreakers (AGB)

Museum ships

Personnel
transport (AP)

Barracks ships (APB)	Xu Xiake

Dispatch boat (YFB)	Beijiao 39 class Beijiao 57 class Beijiao 75 class Beijiao 77 class Dongjiao 03 class Dongjiao 82 class Nanjiao 83 class Nanjiao 90 class

Transport ships (AP)	Type 081 Red Flag class

Troopships (APT)	Beidiao 990 Qiongsha class

Replenishment
ship (AEFS)

Repair ships (AR)

Repair dry docks (ARD)	120t class Dongxiu 912

Repair ships (AR)	Type 648 Dadao class

Rescue and
salvage ships

Heavy-lift ship (YHLC)	Type 633

Rescue ships (ARS)	Type 917

Salvage ships (ATS)	Type 922 Type 922II Dalang class Type 922III Dalang II class Type 922IIIA Dalang II class

Scientific
research ships

Environmental research ships (AGER)	300t-class

Hydrographic survey ships (AGS)	Type 068/069 Yuch'in class Type 625C Type 635 A/B/C Yanlai class Type 635II Type 636 Type 636A Type 646 Kan Yang class Type 988

Oceanographic research ships (AGOR)	Xiangyanghong 5 Type 614III Type 625A/B Type 645 Zhang Jian

Oceanographic surveillance ships (AGOS)	Type 6610 Shuguang class Type 595 Type 639

Space exploration tracking ships (ARIS)	Yuan Wang 1⁺ Yuan Wang 2⁺ Yuan Wang 3 Yuan Wang 4⁺ Yuan Wang 5 Yuan Wang 6

Weather ships (AGH)	Type 614I Type 614II

Spy ships (AGI)

Submarine
support ships

Submarine rescue ships (ASR)	Type 930 Hudong class Type 946 Dazhou class Type 946A Dadong class

Submarine tenders (AS)	Type 925 Dajiang class Type 926

Submersibles (X)

Deep-submergence rescue vehicle (DSRV)	Type 7103 DSRV LR7

Deep-submergence vehicle (DSV)	Harmony class Jiaolong class Rainbowfish class Sea Pole class

Other Submersibles (X)	Osprey-class submersible Mobile diving bell QSZ-II submersible

Diver propulsion vehicles (DPV)	QX-50 QY-18 QY-40 QJY-001

Tankers

Replenishment tanker (AOR)	Beiyou 572 class Type 631 Type 905 Fuqing class

Transport oiler (AOT)	Dongyou 630 class Dongyou 640 class Jinyou class Leizhou class Type 620 Shengli class Type 626 Fuzhou class Type 632 Fulin class Type 637 Type 645 Guangzhou class

Water tanker (AWT)	Dongshui 649 class Leizhou class Nanshui 701 class Type 626 Fuzhou class Type 632 Fulin class Type 645 Guangzhou class Type 646

Technological
research
ships

Missile range instrumentation ships (AGM)	Type 830

Sonar trials ships	Beidiao 993

Target ships (AGT)	Chinese target ship Experiment 216 Decommissioned ships

Technical research ships (AGTR)	Mirage Hunter

Torpedo retrievers (TR/TWR)	Type 803 torpedo retriever Type 917 torpedo retriever

Torpedo trials ships (YTT)	Type 906 Type 907A

Weapon trials ships (AVM/AGM)	Yanxi class Type 909 Wuhu-B class Type 909A Dahua class

Training ships (AX)

Tugs (AT)

Rescue Tug (ATR)	Daozha class Type 830 Nantuo 181 class

Sea-going Tug (ATA)	Type 802 Gromovoy class Type 837 Hujiu class Type 852 Roslavl class

Harbor tug (AT)	3200hp-class Beituo 617 class Beituo 625 class Beituo 632 class Beituo 659 class Beituo 699 class Beituo 702 class Beituo 715 class Haixiu 121 class

Unmanned underwater
vehicles (UUV)

Remotely operated underwater vehicle (ROUV)	8A4 ROUV RECON-IV ROUV 7B8 ROUV Goldfish class ROUV HR-01 ROUV HR-02 ROUV JH-01 ROUV SJT-5 ROUV SJT-10 ROUV SJT-40 ROUV Seahorse ROUV Sea Dragon-I ROUV Sea Dragon-II ROUV

Autonomous underwater vehicle (AUV)	Arctic class ARV Explorer AUV WZODA AUV CR-01 AUV CR-01A AUV CR-02 AUV Intelligent Water class AUV Submerged Dragon 1 AUV Petrel I HUG Petrel II HUG

* = Under construction or procurement
+ = Retired

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