OVERVIEW: The S 160 Tridente [Type 209PN] is a diesel-electric powered submarine operated by the Portuguese Navy. It represents a significantly modernized variant of the venerable Type 209 design, incorporating advanced sensor and weapon systems for enhanced operational capabilities in littoral and blue-water environments. The 'PN' designation signifies its specific tailoring to Portuguese Navy requirements.

DETAILS:
The Type 209PN, of which the Tridente is a key example, represents a significant advancement over earlier iterations of the Type 209 submarine design. Developed and constructed with substantial German assistance, these submarines are designed to address the specific operational needs of the Portuguese Navy, primarily in the Atlantic. The design philosophy emphasizes a balance between acoustic stealth, endurance, and sensor performance. While retaining the core hull form and propulsion principles of the Type 209, the PN variant incorporates a significantly upgraded combat system, including advanced sonar suites, improved navigation systems, and modern weapon control systems. This reflects a commitment to maintaining a technologically advanced and capable submarine force within the Portuguese Navy.

The Tridente is primarily tasked with anti-submarine warfare (ASW), anti-surface warfare (ASuW), and intelligence, surveillance, and reconnaissance (ISR) missions. Its enhanced sensor suite allows it to effectively detect and track both surface and subsurface targets over extended ranges. In an ASW role, the DBQS-40 hull and flank array sonars provide comprehensive 360-degree coverage, enabling the Tridente to localize and engage hostile submarines. The DTA-50 towed array sonar further extends the submarine's detection range and capabilities, particularly in noisy environments. The FL 1800U electronic support measures (ESM) system enables passive detection and identification of radar emitters, providing situational awareness and supporting ASuW operations. The OMS 100 / SERO 400 periscope suite provides visual and infrared observation capabilities, further enhancing ISR functions.

The Tridente's operational effectiveness is further augmented by its advanced armament and fire control systems. The TAU-2000 DL (Decoy Launcher) provides a countermeasure capability against incoming torpedoes, enhancing survivability. The 533mm torpedo tubes are capable of launching a variety of modern torpedoes, enabling the Tridente to effectively engage both surface and subsurface targets. The KH 1007 (Type 1007) navigation radar provides accurate surface navigation and target tracking capabilities. The DBQS-40 Intercept sonar (IPS CSU 90) allows the submarine to detect active sonar emissions, providing early warning of potential threats. The integrated Combat System Unit (CSU 90) manages and fuses data from all onboard sensors, providing the crew with a comprehensive tactical picture and enabling rapid and effective decision-making.

SPECIFICATION: Length: 67.7 m || Beam: 6.35 m || Draft: 6.6 m || Disp: 1700 t

SENSORS: FMS 52 || FL 1800U || DBQS-40 Hull [CSU 90] || KH 1007 [Type 1007] || DTA-50 [TAS 90] || DBQS-40 Flank [CSU 90] || DBQS-40 Intercept [IPS CSU 90] || OMS 100 / SERO 400 Periscope Suite

ARMAMENT: TAU-2000 DL || 533mm TT