OVERVIEW: The S 524 Primo Longobardo [Salvatore Pelosi Class] is a diesel-electric attack submarine operated by the Italian Navy. Commissioned in 1993, it represents a significant component of Italy's undersea warfare capabilities.

DETAILS: The Salvatore Pelosi class submarine, of which Primo Longobardo is a member, was developed in the late 1980s and early 1990s as an improved variant of the earlier Sauro class. The design placed a greater emphasis on acoustic stealth and improved sensor performance, reflecting the evolving threat environment of the late Cold War and post-Cold War periods. Significant efforts were invested in reducing the submarine's noise signature to enhance its survivability in contested waters. Construction was undertaken by Fincantieri, incorporating modular construction techniques to expedite the building process. The class maintains a conventional teardrop hull design, optimized for underwater performance and maneuverability. The Pelosi class represents a technological bridge between the earlier Sauro class and later Italian submarine designs.

The primary roles of the S 524 Primo Longobardo encompass anti-submarine warfare (ASW), anti-surface warfare (ASuW), and intelligence gathering. Its sensor suite allows for effective detection and tracking of both surface and subsurface targets. The installation of the M5 [DUUG-6] sonar provides long-range passive acoustic detection capabilities, crucial for ASW operations. The IPD-70/S MF sonar offers active sonar functionality for precise target localization and classification, while the IPD-70/S LF acts as a low-frequency alternative for long-range detection in specific environmental conditions. The MM/BPS-704 radar intercept system [3RM-20 SMG] enhances situational awareness by detecting and analyzing radar emissions from enemy platforms. The MM/BLD-727 Thetis system likely functions as a towed array sonar, further extending the submarine's passive detection range. The optical and LLTV periscopes are used for visual target identification and navigation when operating at periscope depth.

Technically, the Primo Longobardo possesses a robust suite of sensors and a capable armament package. The submarine's diesel-electric propulsion system provides a balance between endurance and stealth. The 533mm torpedo tubes are capable of launching a variety of modern torpedoes, giving it significant offensive firepower against both surface ships and submarines. The MD-100/S likely serves as a mine detection and avoidance sonar, increasing its operational flexibility in mine-threatened waters. The combination of advanced sensors and weapons allows the S 524 Primo Longobardo to conduct independent operations or to integrate effectively within a larger naval task force, providing a valuable contribution to Italy's maritime security.

SPECIFICATION: Length: 66.0 m || Beam: 6.8 m || Draft: 6.3 m || Disp: 1653 t

SENSORS: M5 [DUUG-6] || IPD-70/S MF || MD-100/S || MM/BPS-704 [3RM-20 SMG] || MM/BLD-727 Thetis || IPD-70/S LF || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: 533mm TT