HS THETIS raised the Greek Flag on board and was acquired by the Navy on April 9, 1960 in RENDSBURG, Germany where it had been built by KROGUERTUERFTG G.M.B.H on behalf of the American authorities in Europe (NAYSIPLO HAGUE). On May 23, the ship sailed for Greece where it joined the ranks of the Greek Navy, it bears the side number A-307 and the International Call Sign “SZZZ”.

It is built for the installation of metal barriers and is used after the decommissioning of the barriers to carry out maintenance inspection, mooring, and lifting of the lifeboats (buoys) in order to maintain their operational readiness.