Turkish firm STM completes modernization of Pakistan Agosta 90B class submarine


According to information published by STM on January 25, 2023, the company has completed the modernization of the second AGOSTA 90B Class submarine owned by Pakistan, equipping it with modern and state-of-the-art systems, and has delivered it to the Pakistan Navy.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Pakistan Navy's Agosta 90B class submarine. (Picture source: STM)


STM Savunma Teknolojileri Mühendislik ve Ticaret A.Ş., one of the leading companies in the Turkish defence sector, has completed another critical milestone in its successful export projects.

The second submarine, PNS/M KHALID (S-137), was delivered to Pakistan Naval Forces Command at a ceremony held, marking the latest step in the project to modernize three AGOSTA 90B class submarines.

Submarines Modernized with the Most Advanced Systems

The submarines' sonar suites, periscopes, command and control systems, naval data distribution systems, converters, steering control systems, chilled water systems, and radar & electronic support systems are all being replaced.

Systems produced by numerous indigenous and national companies, including ASELSAN and HAVELSAN, are also being exported within the scope of the Project.

All hull-related structural modifications, materials, and workmanship activities carried out on the submarines under the modernization project have been certified by the international classification society DNV (Dat Norske Veritas).

Agosta Hits Target with Precision

The first Agosta 90B Class Submarine PNS/M HAMZA (S-139), modernized by STM for the Pakistan Navy, participated in the SEASPARK-2022 Tactical Exercise, during which it successfully fired a torpedo and sank a decommissioned frigate.

About the Agosta 90B class submarines

The Agosta-90B class submarines are a class of diesel-electric submarines built by the French shipbuilder DCNS (now known as Naval Group) for the French Navy and the Spanish Navy.

They are also known as the Khalid-class submarines in Pakistan. The class was designed for anti-submarine and anti-surface warfare, as well as intelligence gathering and reconnaissance.

The Agosta-90B class submarines have a displacement of around 2,050 tons when surfaced and 2,083 tons when submerged. They are around 76 meters in length and have a top speed of around 12 knots when surfaced and 20.5 knots when submerged.

They have a maximum diving depth of around 350 meters and a range of around 8,500 nautical miles. The submarines are equipped with four 533mm torpedo tubes and can carry up to 18 torpedoes or missiles.