OVERVIEW: The S 361 *Piri Reis* [Type 214TN, Reis Class] is a diesel-electric submarine operated by the Turkish Naval Forces. It represents a significant advancement in Turkey’s submarine capabilities, incorporating air-independent propulsion (AIP) technology.

DETAILS: The *Reis* class represents Turkey’s ambition to develop a modern and capable submarine force. Based on the German Type 214 design, the *Reis* class features significant local modifications and improvements to meet the specific operational requirements of the Turkish Navy. The *Piri Reis*, commissioned in 2021, is among the first of the class to enter service. These submarines represent a crucial step in Turkey’s naval modernization program, aimed at bolstering its presence and influence in the Eastern Mediterranean and Black Sea regions. The project reflects a transfer of technology and co-production arrangement, contributing to the growth of Turkey's domestic defense industry and fostering self-reliance in advanced naval technologies.

The primary roles of the *Piri Reis* include anti-submarine warfare (ASW), anti-surface warfare (ASuW), intelligence gathering, surveillance, and reconnaissance (ISR). The submarine's AIP system, utilizing fuel cell technology, drastically increases its submerged endurance, enabling prolonged and covert operations in contested waters. The AIP capability allows for silent running and prolonged submerged patrols, crucial for maintaining a discreet presence and conducting surveillance missions. The *Piri Reis* is also capable of supporting special operations forces (SOF) insertion and extraction, further expanding its operational versatility.

The sensor suite of the *Piri Reis* enhances its operational effectiveness in all domains. The FMS 52 sonar provides comprehensive underwater acoustic situational awareness. The DBQS-40 Hull-mounted sonar [CSU 90] provides active and passive detection capabilities, while the DBQS-40 Flank array sonar [CSU 90] significantly enhances the submarine's ability to detect and track targets at longer ranges, especially in noisy environments. The DBQS-40 Intercept sonar [IPS CSU 90] allows for the detection and classification of enemy sonar emissions. The ALPER radar provides surface search and navigation capabilities. The ARES-2N electronic support measures (ESM) system intercepts and analyzes enemy radar signals, providing valuable intelligence. The OMS 100 / SERO 400 periscope suite enables visual surveillance and target identification, further contributing to situational awareness. The TAU-2000 DL torpedo countermeasures system provides a defensive capability against incoming torpedoes. The 533mm torpedo tubes allow for the deployment of a variety of torpedoes for anti-submarine and anti-surface warfare roles.

SPECIFICATION: Length: 65.0 m || Beam: 6.3 m || Draft: 6.0 m || Disp: 1690 t

SENSORS: FMS 52 || DBQS-40 Hull [CSU 90] || DTA-50 [TAS 90] || DBQS-40 Flank [CSU 90] || DBQS-40 Intercept [IPS CSU 90] || ALPER || ARES-2N || OMS 100 / SERO 400 Periscope Suite

ARMAMENT: TAU-2000 DL || 533mm TT