OVERVIEW: The S 116 Poseidon [Type 209-1200] is a diesel-electric submarine operated by the Hellenic Navy, commissioned in 1994. It represents a key component of Greece's underwater warfare capabilities. The Type 209-1200 is a variant of the widely successful German Type 209 submarine family, specifically tailored to meet the requirements of the Hellenic Navy.

DETAILS: The Type 209 submarine was developed by Howaldtswerke-Deutsche Werft (HDW) of Germany in the late 1960s as an export-oriented design, intended to provide a cost-effective and reliable submarine for navies around the world. The Type 209-1200 variant, as procured by Greece, incorporates a number of improvements over earlier iterations, focusing on enhanced acoustic signature reduction, improved sensor capabilities, and increased operational endurance. The design philosophy emphasizes simplicity, robustness, and ease of maintenance, making it well-suited for prolonged deployments in the Aegean Sea and Eastern Mediterranean. Construction typically involves a single-hull design optimized for hydrodynamic performance and internal space utilization.

The S 116 Poseidon and its sister vessels are primarily employed in anti-surface warfare (ASuW) and anti-submarine warfare (ASW) roles. Their missions include protecting vital sea lanes, conducting maritime surveillance, and deterring potential adversaries. While lacking dedicated anti-air warfare (AAW) capabilities in the traditional sense, the Poseidon can contribute to area denial through its underwater presence, forcing surface combatants to expend resources on ASW measures. The submarine's diesel-electric propulsion system allows for extended submerged endurance, crucial for maintaining persistent presence in contested waters.

The sensor suite aboard the S 116 Poseidon is critical to its operational effectiveness. The DUUX 2C is a flank array sonar, providing long-range detection and tracking of surface and subsurface contacts. The CSU 3-4 integrated sonar system offers active and passive detection modes, enabling precise target localization and classification. The AR-700S5 electronic support measures (ESM) suite allows the submarine to detect and analyze radar emissions from surface vessels and aircraft, providing valuable situational awareness. The inclusion of the IPS CSU 3 integrated processing system likely enhances data fusion and display, improving operator efficiency. Twin periscopes, one optical and one equipped with a low-light television (LLTV) camera, provide visual confirmation and targeting data, especially in shallow water environments. The use of 533mm torpedo tubes allows the employment of a variety of modern torpedoes. The signal ejector is likely for the deployment of decoys or communication buoys.

SPECIFICATION: Length: 55.9 m || Beam: 6.3 m || Draft: 5.5 m || Disp: 1180 t

SENSORS: DUUX 2C || CSU 3-4 || AR-700S5 || IPS CSU 3 || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

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