OVERVIEW: The PLA-675N Echo II is a cruise missile submarine, presumed to be of Soviet origin based on sensor and armament fit, commissioned in 1985. It is designated PLA (Platform, Land Attack) indicating a primary role in delivering conventional or potentially nuclear strikes against land targets.

DETAILS: The Echo II class, designated Project 675 in Soviet service, represents a significant evolution in Soviet submarine design, focusing on extending the range and striking power of the Soviet Navy. Development prioritized the ability to engage high-value land targets and surface combatants at extended ranges, necessitating the integration of sophisticated cruise missile systems. This led to a distinctive hull design characterized by large missile tubes integrated into the superstructure. Commissioning in 1985 places this particular unit within a period where Soviet submarine technology was rapidly advancing, incorporating improved noise reduction measures and more advanced sensor suites. The class reflects the Soviet Union's strategic doctrine of maintaining a strong second-strike capability and projecting power globally.

The PLA-675N, inferred from its designation, primarily functions as a land-attack cruise missile platform, although the presence of torpedo tubes suggests a secondary anti-surface warfare (ASuW) capability. The 533mm torpedo tubes are likely intended for use against surface combatants, while the 400mm tubes could be dedicated to anti-submarine warfare (ASW) or self-defense against smaller surface vessels. The boat's sensor suite suggests an emphasis on situational awareness and targeting. The 'Snoop Slab [Burya]' radar provides surface search capabilities, essential for initial target acquisition and navigation. While dedicated anti-aircraft warfare (AAW) capabilities are not evident in the armament, the boat relies on stealth and its escorts for defense against aerial threats.

The PLA-675N's sensor suite significantly enhances its operational effectiveness. The 'Quad Loop DF' likely functions as a direction finder, providing crucial information for locating and identifying radio transmissions from potential targets or allied forces. The 'Stop Light B [Nakat]' and 'Shark Teeth [MKG-100 Kerch]' sonar systems provide active and passive acoustic detection capabilities, aiding in target acquisition and threat assessment. The 'Shark Fin [MKG-100 Kerch]' presumably serves as a towed sonar array, increasing the submarine's detection range, especially against quiet targets. The 'Generic Acoustic Intercept' system allows the submarine to monitor enemy sonar activity, providing valuable intelligence on their tactics and location. The presence of both optical and LLTV (Low Light Television) periscopes allows for visual target identification and reconnaissance, even in low-light conditions. The 'Signal Ejector' allows for secure communication with other units without surfacing.

SPECIFICATION: Length: 119.0 m || Beam: 9.2 m || Draft: 7.1 m || Disp: 4485 t

SENSORS: Quad Loop DF || Stop Light B [Nakat] || Shark Teeth [MKG-100 Kerch] || Shark Fin [MKG-100 Kerch] || Snoop Slab [Burya] || Generic Acoustic Intercept || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: 533mm TT || 533mm TT || 400mm TT || Signal Ejector