| Name / Class | Yuan-class (Type 039A) |
| Country of Origin | China |
| Type | Diesel-Electric Attack Submarine |
| Manufacturer | China State Shipbuilding Corporation (CSSC) |
| Operators | People’s Liberation Army Navy (PLAN) |
| In Service | 2006 |
| Status | Active Service |
| Length | 77 meters |
| Beam (Width) | 8.4 meters |
| Draught / Draft | 6.7 meters |
| Displacement (Surfaced) | ~2,300 tons |
| Displacement (Submerged) | ~3,600 tons |
| Hull Material | High-strength steel |
| Crew | 38–40 personnel |
| Power Source | Diesel-electric with AIP |
| Engine / Reactor Type | Stirling engine (AIP) + diesel generators |
| Propulsion System | Single propeller shaft |
| Speed (Surfaced) | 12 knots |
| Speed (Submerged) | 17 knots |
| Range | 8,000 nautical miles (surfaced) |
| Endurance | 60–70 days |
| Operational Depth | 300 meters |
| Test Depth | 400 meters |
| Maximum Depth | 500 meters |
| Torpedo Tubes | 6 × 533mm |
| Torpedoes / Missiles | Yu-6 torpedoes, YJ-82 missiles |
| Cruise / Ballistic Missiles | YJ-82 sub-launched variant |
| Mines | Up to 24 naval mines |
| Decoys / Countermeasures | Acoustic decoys, ECM suite |
| Sonar System | Bow, flank, and towed array sonars |
| Radar | Surface search radar |
| Combat Management System | H/SQG-207 system |
| Electronic Warfare System | Radar warning and jammer suite |
| Communication Systems | VLF/UHF communication systems |
| Navigation Systems | Inertial and satellite navigation |
| Anechoic Coating | Yes |
| Noise Reduction Features | Yes (AIP and machinery isolation) |
| Magnetic Signature Reduction | Built-in degaussing |
| Acoustic Signature Level | Low |
| Weapons Payload | 18–24 torpedoes/missiles/mines |
| Special Forces Accommodation | Limited |
| UUV / Drone Capability | Possible via torpedo tubes |
| Reactor / AIP Type | Stirling AIP system |
| Automation Level | Moderate |
| Special Features | Long-endurance AIP, quiet operation |
| Major Deployments | South China Sea, East China Sea |
| Combat / Exercises | PLAN fleet exercises, ASW training |
| Upgrades | Improved sonar and AIP systems (Type 039B/C variants) |
| Unit Cost | $250–300 million (estimated) |
| Number Built | 20+ units |
| Production Period | 2006–Present |
| Image / Video Source | PLAN / Chinese MoD |
The Yuan-class (Type 039A) submarine, developed by China State Shipbuilding Corporation (CSSC), represents the People’s Liberation Army Navy’s (PLAN) latest generation of diesel-electric attack submarines. Designed for stealth, endurance, and versatility, the Type 039A is a critical asset in China’s underwater warfare strategy, blending indigenous innovation with selective foreign technology influence — notably from Russian Kilo-class designs.
Introduced in 2006, the Yuan-class incorporates Air-Independent Propulsion (AIP) technology, enabling it to remain submerged for extended durations without surfacing — a crucial advantage in modern anti-submarine warfare (ASW) environments. Its low acoustic signature, combined with advanced sonar and combat systems, allows it to operate undetected in both coastal and deep-sea missions.
Armed with six 533mm torpedo tubes, the submarine can launch Yu-6 heavyweight torpedoes, YJ-82 anti-ship missiles, and naval mines, giving it substantial offensive flexibility. With an operational range exceeding 8,000 nautical miles, it can patrol key maritime zones, including the South China Sea and Western Pacific, for extended periods.
The Type 039A’s AIP system, reportedly based on a Stirling engine, reduces noise and enhances underwater endurance, while its anechoic tile coating and hydrodynamic hull design further minimize detectability.
While the Yuan-class is not nuclear-powered, its combination of stealth, range, and advanced electronics makes it one of the most formidable non-nuclear submarines in Asia. Its export variant, the Type S20, is marketed globally to nations seeking affordable, high-performance underwater platforms.
The Yuan-class (Type 039A) submarine is not available for export or civilian purchase in the United States. However, defense analysts estimate its unit cost at approximately $250–300 million, depending on configuration.
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