Replacing some of the Challenger-class submarine, upgraded in 2016 till 2019, which includes optronic periscopes, combat management systems, sonars, countermeasure systems, digital data-links and attack capabilities which also allows the firing of new torpedoes and anti-ship missiles.[7]
Contracted to Saab Kockums Sweden and Odense Maritime Technology Denmark. Ordered March 28, 2023.
Build by ST Marine.
First delivery estimated 2028. Displacement 10,000 tons[9][10]
In 2023, Singapore ordered 4 offshore patrol vessels based on Fasmer design Potsdam-class patrol vessels. They are to replace the Sentinel-class maritime security and response vessel.
Variants in service include: Coastal Defence USV, Mine Countermeasures USV with Towed Synthetic Aperture Sonar, and Mine Countermeasures USV with Expendable Mine Disposal System.