[6] In April 2022 it was announced that the revised schedule for construction of the new replacement boats would likely see the first two vessels entering service in the 2034 to 2037 timeframe.

[18] In 2022 the Spanish Ministry of Defence sent a letter to the Dutch DMO for Navantia to be allowed to put in an offer following a RfQ sent to the remaining contenders, in which some of the requirements have changed.

[19] On 15 March 2024 State Secretary for Defence Christophe van der Maat officially announced that Naval Group has been selected as the winning bid.

[20][21][22] Prior to this announcement, the winner was already leaked to several media outlets, which caused political backlash for choosing a foreign yard over a Dutch one.

[23] In April 2024, it was announced which ten Dutch companies and two knowledge institutions will be involved in the construction of the Orka class submarines.