The Turkish Navy’s Preveze-class submarine mid-life modernisation project (Preveze-YÖM) has reached a new milestone.

The sea acceptance trials of the inertial navigation system, CTD probes, chilled water system and static inverters have been concluded as part of the project, which is being completed under the guidance of the Presidency of Defence Industries (SSB).

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

These trials were performed before the completion of the design stages as per the contract.

SBB also approved the project’s critical design phase.

Meanwhile, the Turkish Navy worked on the completion of the platform incorporation of the MÜREN combat management system.

The Preveze-Class Submarines Mid-Life Modernisation Project (PMMP) includes the upgrade of four Preveze-class submarines, TCG Preveze (S-353), TCG Sakarya (S-354), TCG 18 Mart (S-355) and TCG Anafartalar (S-356).

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

Upgrade work is being performed by STM-ASELSAN-HAVELSAN, in collaboration with ASFAT.

Under this upgrade project, inertial navigation system, salinity-depth-density measurement system, floating antenna, satellite communication mast, assault and navigation periscope system will be acquired by SBB.

The procurement activities will also cover cooled water system, emergency underwater communication system, static converter and air freshening system.

SBB will also carry out the platform integration activities of all products delivered by STM-ASELSAN-HAVELSAN and ASFAT partnership.

STM is responsible for the platform incorporation of all systems that are being improved for the Preveze-class submarines, as well as for the purchase of system under the project.

In 2019, Hensoldt won a €40m contract from Savunma Teknolojileri Mühendislik (STM) to modernise vision equipment used by the Preveze-class submarines.

Naval Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Naval Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Virtualitics has secured the Innovation and Business Expansion awards for its Integrated Readiness Optimization (IRO) suite. Discover how its explainable AI is transforming maintenance, sustainment and mission readiness, giving defence leaders faster, clearer, and more confident operational decisions.

Discover the Impact