## 3 Results and Discussion
Benefits of management by a consortium of universities/institutions in cooperation with GUM:  
* Proven procedures for establishing state standards:
* No fees for the area and use of the existing building as part of the future metrological infrastructure;
* Self-sufficiency of national institutions when it comes to calibration of sensors and devices in the area of underwater acoustics--saving costs and time;
* Access to full metrological infrastructure while reducing maintenance costs for participating institutions;
* Possibility of using infrastructure and equipment in teaching (lectures and laboratories) related to metrology in underwater acoustics and, after expansion, in the offshore area;
* Possibility of using the infrastructure to conduct scientific research and test new products related to underwater/offshore acoustics;
* Having appropriate certificates for devices may be important/helpful in obtaining orders resulting from tenders and research grants;  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**No. ** & **Device/Object** & **Application** & **Frequency Band/Method** \\ \hline \(1\) & Low frequency acoustic coupler [33] & Calibration of underwater acoustic sensor & 10–2 kHz vibrating water column method—in progress from GUM’s own funds \\ \hline \(2\) & Very low frequency acoustic coupler & Calibration of underwater acoustic sensor & 0.01–10 Hz/acoustic coupler \\ \hline \(3\) & Small measuring tank \(3\times 3\times 4\) m & Calibration of underwater acoustic sensor and devices & kHz–1 MHz/Free field \\ \hline \(4\) & Large measuring tank \(10\times 15\times 10\) m & Calibration of underwater acoustic sensor and devices & several hundred Hz–1 MHz/Free field \\ \hline \(5\) & Marine reservoir with research infrastructure in the silence zone (actual conditions of operation of devices) & Calibration of underwater acoustic sensor and devices, adjustment of SONARs and underwater communication devices & several hundred Hz–1 MHz/Free field \\ \hline \(6\) & Large water reservoir with research infrastructure in the silence zone (model conditions for the operation of devices) & Calibration of underwater acoustic sensor and devices, adjustment of SONARs and underwater communication devices & several hundred Hz–1 MHz/Free field \\ \hline \(7\) & Large water reservoir with research infrastructure in the silence zone (model conditions for the operation of devices) & Calibration of underwater acoustic sensor and devices, adjustment of SONARs and underwater communication devices & several hundred Hz–1 MHz/Free field \\ \hline \(8\) & Large water reservoir with research infrastructure in the silence zone (model conditions for the operation of devices) & Calibration of underwater acoustic sensor and devices, adjustment of SONARs and underwater communication devices & several hundred Hz–1 MHz/Free field \\ \hline \(9\) & Large water reservoir with research infrastructure & Calibration of underwater acoustic sensor and devices, adjustment of SONARs and underwater communication devices & several hundred Hz–1 MHz/Free  
* It is planned that the future Underwater Acoustics Laboratory will be managed on the basis of cooperation/establishing a consortium with interested institutions and with the participation of the Central Office of Measures as the National Metrological Institute.