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Changzheng 402 1990

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
长征1号 [Changzheng 1]	401		Bohai, Huludao	1968	26.12.1970	1.8.1974	stricken 2001
长征2号 [Changzheng 2]	402		Bohai, Huludao	1974	1977	30/121980	stricken 2005
长征3号 [Changzheng 3]	403		Bohai, Huludao	1980	1983	25.12.1984	in service (2019)
长征4号 [Changzheng 4]	404		Bohai, Huludao	1984	1987	27.10.1987	in service (2019)
长征5号 [Changzheng 5]	405		Bohai, Huludao	1987	8.4.1990	12/1990	in service (2019)

Technical data

Displacement standard, t
Displacement normal, t	401, 402: 4500 / 5000 403-405: 4800 / 5550
Length, m	401, 402: 90.0 403-405: 98.0
Breadth, m	9.00
Draught, m	7.40
No of shafts	1
Machinery	2 sets geared steam turbines, 1 nuclear reactor
Power, h. p.	12000
Max speed, kts	12 / 25
Fuel, t	nuclear
Endurance, nm(kts)	practically unlimited
Armament	401, 402: 6 - 533 TT (bow, 20 or 36 mines) 403-405: 6 - 533 TT (bow, 20, inc. Yin Ji-82 SSM (4 C-801) or 36 mines)
Electronic equipment	Flag radar, SQZ-3, SQW-3, SQG-2B sonars, type 921-A ECM suite, CCS
Complement	75
Diving depth operational, m	300

Standard scale images

Graphics

Project history

The first nuclear-powered vessels and the first submarines designed and built in China, by the Huludao Shipyard. Considerable help with the powerplant was received from West Germany. They have an Albacore-type teardrop hull. Changzheng 401 underwent prolonged trials, and construction of further units was delayed by powerplant problems. The last three units of the class are longer than the original boats.

Modernizations

late 1990s, all: + new anechoic plating, ability to use wire-guided Yu-6 torpedoes

late 2000s, all survived: sonars were replaced by H/SQ2-262B sonar suite

Naval service

No significant events.