TUBITAK Marmara Research Center Materials Institute Underwater Acoustic Laboratory (UAL) has been built in order to develop the critical SONAR technologies in the field of underwater acoustic, as a work package of “National Sonar Wet-End Production and Integration Project for MİLGEM Programme”. Because of lacking such a technology in Turkey, this infrastructure was designed in coordination with Undersecretariat for Defence Industries (UDI) and MİLGEM Project Office (MPO) to develop Wet - End Part of National Sonar and to realize performance tests. And official opening date was 14th March, 2008. Underwater Acoustic Laboratory is initial and unique infrastructure in Turkey to carry out Research&Development, Production, Test and Characterization activities in the field of underwater electro acoustic transducers. In April 2009 Underwater Acoustic Laboratory has been accredited by German Accreditation Agency (DAP - Deutsches Akkreditierungssystem Prüfwesen GMBH). Later, in 2014 TURKAK (Turkish Accreditation Agency) , being the sole accreditation body in Turkey, has accredited UAL.
The main infrastructure is the acoustically isolated open test tank of 15m x 10m x 7,5m dimensions. Besides, open test tank has high accuracy positioning system in order to position the various sensors and sensor arrays of 100 kg and 3000 kg weight.
Underwater Acoustic Laboratory has been announced as a Designated Institute responsible from National Standards in Turkey in the field of underwater acoustics at 2012 by BIPM ( Bureau International des Poids et Mesures) and became associate member to EURAMET (European Association of National Metrology Institutes) at 2013.