On Saturday June 4th 2022 within the framework of international cooperation planning of the HNDGS, a Passing Exercise (PASSEX) was conducted among the Frigate HS LIMNOS, the Submarine HS MATROZOS, a S-70B Helicopter and a French Maritime Patrol Aircraft ATLANTIQUE-II, in the sea area southwest of Crete island.
During the PASSEX, advanced anti-submarine exercises were carried out.