{"id":99767,"date":"2026-08-28T12:29:50","date_gmt":"2026-08-28T09:29:50","guid":{"rendered":"https:\/\/thedefender.media\/?p=99767"},"modified":"2026-08-28T12:31:36","modified_gmt":"2026-08-28T09:31:36","slug":"zvook-underwater","status":"publish","type":"post","link":"https:\/\/thedefender.media\/en\/2026\/08\/zvook-underwater\/","title":{"rendered":"Ukraine’s Zvook tests passive hydrophones for underwater acoustic monitoring"},"content":{"rendered":"\n

Ukrainian tech startup Zvook<\/a> is conducting research and development into hydrophones engineered for passive underwater acoustic monitoring. The developer identifies<\/a> maritime defence, shipping, port security, and monitoring of critical subsea infrastructure as potential operational applications for the technology.<\/p>\n\n\n\n

Unlike active sonar systems that emit acoustic pulses and process signal reflections, the Zvook system remains acoustically silent. It leverages ambient underwater soundscapes to detect, track, and classify targets.<\/p>\n\n\n\n

The company notes that the subsea acoustic environment differs significantly from airborne acoustic propagation due to distinct speed-of-sound profiles, background noise floors, multipath reflections, and oceanographic conditions. Consequently, Zvook is currently focusing its efforts on collecting real-world environmental datasets to determine which target classes can be reliably identified using passive acoustic sensing.<\/p>\n\n\n\n

\n
Dorozvidka #74: <\/strong>\u201cAchilles\u201d with RZ-20 KAT mid-strike, Ihor Fedirko on exports, Operation M&Ms and an Order for Elon Musk<\/a><\/div>\n<\/div>\n\n\n\n

The project is currently in the research, development, and field-testing phase, with the company framing the system as an ongoing evaluation effort rather than a mature product. For joint commercial and operational trials, Zvook is seeking partnerships with defence organisations, maritime operators, infrastructure managers, and systems integrators.<\/p>\n\n\n\n

Earlier, Defender Media reported on the new MV11 uncrewed surface vessel<\/a>, developed by the Ukrainian-British enterprise UFORCE and unveiled to mark Ukraine\u2019s Independence Day.<\/p>\n","protected":false},"excerpt":{"rendered":"

The system operates silently without acoustic emissions, detecting and classifying underwater signatures<\/p>\n","protected":false},"author":5,"featured_media":99763,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_featured_category_order":0,"_article_badge":"featured","footnotes":""},"categories":[32],"tags":[1458,216,612],"class_list":["post-99767","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innovation","tag-acoustics","tag-industry","tag-zvook","pmpro-has-access"],"acf":[],"yoast_head":"\nZvook begins testing passive hydrophones<\/title>\n<meta name=\"description\" content=\"The system operates silently without acoustic emissions, detecting and classifying underwater signatures. 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