Hellenic Navy Hydrographic Service (HNHS), informs that the exact location of the historical shipwreck of HS 'Katsonis' submarine has been confirmed by optical means 6 nm. northwest of the island of Skiathos at 253 meters depth.

The historical wreck was found by HNHS hydrographic-oceanographic vessel NAFTILOS  on January 29, 2018 using multibeam and sidescan sonars.

Her identification was made by the same research vessel from 4 to 6/5/2018 using submarine robotic cameras (ROVs) with the assistance of K. THOKTARIDIS diving team.

During the survey FAOS tv filming company had also participated with the appropriate cinematographic equipment.