This, in combination with their relatively small size, makes them difficult to detect from surface vessels and ideal for operations in coastal areas.

[4] In recent years, several submarines of the Ula class have been deployed in the Mediterranean Sea in support of the NATO Operation Active Endeavour, where their intelligence-gathering ability surpassed expectations.

[7] In September 2024 it was reported that the combat systems of the six Ula class submarines will be updated again by Kongsberg Defense and Aerospace.

[8][9] The following month, in October 2024, it was also reported that Hensoldt had completed a critical design review for the modernisation of the six boats, which includes the installation of a new periscope and optronic mast systems.

[10] In 2012 the Norwegian MoD set 2014 as a deadline for deciding whether to further extend the operative life of the Ula class after their slated end-of-life in 2020, or to replace them with a new fleet.

[13] In 2016, two suppliers (DCNS and Thyssen Krupp) were shortlisted to provide competing options to replace the Ula-class boats.

In February 2017, Thyssen Krupp was selected to provide four replacement submarines based on the Type 212-class for service entry in around 2030.

In March 2021 it was indicated that an agreement had been reached between Norway and Germany to initiate the acquisition program, pending approval by the Bundestag.