OVERVIEW: The S 34 *Tikuna* [Type 209-1400 Mod] is a diesel-electric attack submarine (SSK) operated by the Brazilian Navy. It represents a modified and updated variant of the German Type 209 submarine design, specifically the 1400 model, tailored to meet Brazilian operational requirements. Commissioned in 2006, the *Tikuna* forms a critical component of Brazil's underwater defense capabilities.

DETAILS: The *Tikuna*'s development stemmed from Brazil's need to modernize its submarine fleet and enhance its domestic shipbuilding capabilities. While based on the proven Type 209 design, the *Tikuna* incorporates several enhancements and modifications, reflecting Brazil's desire for greater self-sufficiency in defense technology. The Type 209 design itself is renowned for its reliability, stealth, and adaptability, making it a popular choice among navies worldwide. The selection of the Type 209-1400 variant provided Brazil with a well-established platform upon which to build its submarine expertise. The *Tikuna* project also served as a valuable stepping stone towards the eventual development and construction of Brazil's own nuclear-powered submarine, the *Álvaro Alberto*. The construction of the *Tikuna*, largely undertaken in Brazil, fostered the transfer of technology and expertise from Germany, further bolstering the nation’s naval industrial base.

The primary roles of the *Tikuna* are anti-submarine warfare (ASW), anti-surface warfare (ASuW), and maritime patrol. Equipped with advanced sensors and weaponry, it is capable of detecting, tracking, and engaging both surface ships and submarines. Its diesel-electric propulsion system allows for extended periods of submerged operation, crucial for maintaining a persistent presence in its patrol areas. Furthermore, the *Tikuna* can conduct intelligence gathering missions and support special operations forces. The submarine's relatively quiet operation makes it well-suited for covert surveillance and reconnaissance tasks. The *Tikuna* significantly contributes to Brazil's ability to protect its vast coastline and maritime interests in the South Atlantic.

The *Tikuna*'s sensor suite provides a comprehensive picture of the underwater environment. The TRS 3100 Calypso III [DRUA 33C] radar, integrated with the sonar suite, allows for surface detection and navigation when surfaced. The DR 4000U electronic support measures (ESM) system provides situational awareness by detecting and analyzing radar emissions from enemy vessels. The CSU 83/1 active/passive sonar suite, along with the IPS CSU 83 passive ranging sonar and MAS 83 mine avoidance sonar, is critical for ASW operations, enabling the submarine to detect and classify underwater targets. The two submarine periscopes, one optical and one equipped with a Low Light TV (LLTV) camera, provide visual confirmation of targets and facilitate surface navigation. The combination of these sensors allows the *Tikuna* to effectively operate in a variety of challenging maritime environments. Armament includes standard 533mm torpedo tubes which can launch a variety of torpedoes.

SPECIFICATION: Length: 61.2 m || Beam: 6.3 m || Draft: 5.5 m || Disp: 1454 t

SENSORS: TRS 3100 Calypso III [DRUA 33C] || DR 4000U || CSU 83/1 || IPS CSU 83 || MAS 83 || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: 533mm TT || 533mm TT