OVERVIEW: The SS 31 Angamos [Type 209-1200] is a diesel-electric attack submarine of the Type 209-1200 class, currently in service with the Peruvian Navy. Commissioned in 1981, the Angamos represents a significant component of Peru's undersea warfare capabilities.

DETAILS:
The Type 209 diesel-electric submarine was developed in Germany by Howaldtswerke-Deutsche Werft (HDW) during the 1960s. Designed for export, the Type 209 has proven to be one of the most successful conventional submarine designs in history, with numerous variants and sales to several navies worldwide. The Type 209-1200 variant, as represented by the Angamos, incorporates improvements over earlier models, including enhanced acoustic silencing measures and upgraded sensor suites. The design emphasizes a balance between affordability, operational effectiveness, and ease of maintenance, making it well-suited for navies with diverse operational requirements. Key design considerations included a streamlined hull for improved underwater performance, a robust pressure hull allowing for significant diving depths, and a modular construction approach facilitating upgrades and maintenance.

The Angamos' primary role is anti-submarine warfare (ASW), with secondary roles encompassing anti-surface warfare (ASuW) and intelligence gathering. In an ASW capacity, the Angamos is equipped to detect, track, and engage hostile submarines using its advanced sonar systems and torpedo armament. The DUUX 2C passive ranging sonar, in conjunction with the DUUA 2A active sonar, provides comprehensive underwater situational awareness. Furthermore, the ARUR 10 (DR 2000U) electronic support measures (ESM) suite allows for the detection and identification of radar emissions from surface vessels and aircraft, enhancing the submarine's ability to operate covertly in contested environments. The DRUA 33C Calypso III (TRS 3100) radar provides surface search and navigation capabilities. While not specifically designed for anti-aircraft warfare (AAW), the submarine's ability to operate undetected allows it to pose a threat to surface combatants and support broader fleet operations.

Technically, the Angamos benefits from a sensor suite tailored to its operational environment. The DSUV 2H towed array sonar further extends its passive detection range, crucial for long-range ASW operations. Acoustic intercept capabilities provide warning of active sonar emissions from potential adversaries. Two submarine periscopes, one optical and one incorporating low-light television (LLTV), enable visual surveillance and target identification at periscope depth. The 533mm torpedo tubes provide the platform's primary offensive punch, capable of launching a variety of torpedoes against both submarine and surface targets. The inclusion of a signal ejector facilitates communication while submerged, minimizing the risk of detection. The overall design and sensor integration of the Angamos provides a credible underwater warfare capability for the Peruvian Navy.

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

SENSORS: DUUX 2C || DUUA 2A || ARUR 10 [DR 2000U] || DRUA 33C Calypso III [TRS 3100] || DSUV 2H || Generic Acoustic Intercept || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: 533mm TT || Signal Ejector