--- title: "Explained by Offshore Sensing: USV with echosounder" description: "USV with echosounder for persistent fisheries acoustics: ~3 kn average, up to 12-month endurance, Iridium control/telemetry, and geofenced transects that reduce crewed vessel-days." image: https://sailbuoy.no/hubfs/Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png --- [Skip to main content](https://sailbuoy.no/news/usv-with-echosounder#main-content) [![Offshore Sensing_original_logo_fixed](https://sailbuoy.no/hubfs/Logo%20and%20Icons/Offshore%20Sensing_original_logo_fixed.svg) ![Offshore Sensing_original_logo_fixed](https://sailbuoy.no/hubfs/Logo%20and%20Icons/Offshore%20Sensing_original_logo_fixed.svg) ![Offshore Sensing_original_logo_fixed](https://sailbuoy.no/hubfs/Logo%20and%20Icons/Offshore%20Sensing_original_logo_fixed.svg) ![Offshore Sensing_original_logo_fixed](https://sailbuoy.no/hubfs/Logo%20and%20Icons/Offshore%20Sensing_original_logo_fixed.svg)](https://sailbuoy.no) - [Show submenu for USV USV](https://sailbuoy.no/unmanned-surface-vessels) - [SB Bio](https://sailbuoy.no/sb-bio-unmanned-surface-vessel) - [SB Comms](https://sailbuoy.no/sb-comms-unmanned-surface-vessel) - [SB Echo](https://sailbuoy.no/sb-echo-unmanned-surface-vessel) - [SB eEDNA](https://sailbuoy.no/sb-edna-unmanned-surface-vessel) - [SB Met](https://sailbuoy.no/sb-met-unmanned-surface-vessel) - [Fisheries](https://sailbuoy.no/commercial-fish-scouting) - [Build your own](https://sailbuoy.no/unmanned-surface-vessels#byo) - [Technology](https://sailbuoy.no/the-sailbuoy-technology) - [Missions](https://sailbuoy.no/missions) - [News](https://sailbuoy.no/news) - [Show submenu for Company Company](https://sailbuoy.no/company) - [Join our team](https://sailbuoy.no/career) - [Our partners](https://sailbuoy.no/our-partners) Open main navigation Close main navigation - Show submenu for USV USV - USV - [USV](https://sailbuoy.no/unmanned-surface-vessels) - [SB Bio](https://sailbuoy.no/sb-bio-unmanned-surface-vessel) - [SB Comms](https://sailbuoy.no/sb-comms-unmanned-surface-vessel) - [SB Echo](https://sailbuoy.no/sb-echo-unmanned-surface-vessel) - [SB eEDNA](https://sailbuoy.no/sb-edna-unmanned-surface-vessel) - [SB Met](https://sailbuoy.no/sb-met-unmanned-surface-vessel) - [Fisheries](https://sailbuoy.no/commercial-fish-scouting) - [Build your own](https://sailbuoy.no/unmanned-surface-vessels#byo) - [Technology](https://sailbuoy.no/the-sailbuoy-technology) - [Missions](https://sailbuoy.no/missions) - [News](https://sailbuoy.no/news) - Show submenu for Company Company - Company - [Company](https://sailbuoy.no/company) - [Join our team](https://sailbuoy.no/career) - [Our partners](https://sailbuoy.no/our-partners) - Search - [Contact us](https://sailbuoy.no/contact) [Contact us](https://sailbuoy.no/contact) Search # Explained by Offshore Sensing: USV with echosounder # USV with echosounder A **USV with echosounder** carries an acoustic sensor to map biomass, plankton layers, and structure. A wind-propelled Sailbuoy runs planned transects for weeks to months, averages **~3 kn**, and uses **Iridium** for control, telemetry, and alerts. The result is persistent fisheries acoustics with fewer crewed vessel-days. ## What is a USV with echosounder? The echosounder emits sound pulses and reads returns (echograms) to infer targets in the water column. Wind provides propulsion; solar powers electronics. With Iridium, operators adjust routes, check health, and receive summaries while the USV logs raw data for post-mission QA and analysis. ## Why does USV with echosounder matter offshore? Continuous transects capture variability that short surveys miss. Endurance up to 12 months and geofenced routing enable long lines and repeat passes, improving trend detection while cutting mobilizations, CO₂, and HSE exposure. ## Can data be aligned with crewed surveys? Yes. Plan overlapping transects and maintain calibration/QA to compare time-aligned datasets. ## How are data delivered? Key parameters can be previewed over Iridium; full raw files are retrieved after recovery or via scheduled transfer paths where practical. ### Related Articles ##### [![Explained by Offshore Sensing: Autonomous platform emissions and sustainability in marine research](https://sailbuoy.no/hs-fs/hubfs/Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png?width=520&height=294&name=Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png) Explained • June 2, 2026 Explained by Offshore Sensing: Autonomous platform emissions and sustainability in marine research](https://sailbuoy.no/news/explained-by-offshore-sensing-autonomous-platform-emissions-and-sustainability-in-marine-research) ##### [![Explained by Offshore Sensing: Arctic and polar ocean monitoring with autonomous platforms](https://sailbuoy.no/hs-fs/hubfs/Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png?width=520&height=294&name=Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png) Explained • June 2, 2026 Explained by Offshore Sensing: Arctic and polar ocean monitoring with autonomous platforms](https://sailbuoy.no/news/explained-by-offshore-sensing-arctic-and-polar-ocean-monitoring-with-autonomous-platforms) ##### [![Explained by Offshore Sensing: Continuous ocean time-series data: why gaps in observation cost science](https://sailbuoy.no/hs-fs/hubfs/Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png?width=520&height=294&name=Hubspot%20blog%20feature%20image%20explained%20by%20offshore%20sensing%20(1).png) Explained • June 2, 2026 Explained by Offshore Sensing: Continuous ocean time-series data: why gaps in observation cost science](https://sailbuoy.no/news/explained-by-offshore-sensing-continuous-ocean-time-series-data-why-gaps-in-observation-cost-science) [![Offshore Sensing_original_logo_fixed](https://sailbuoy.no/hubfs/Logo%20and%20Icons/Offshore%20Sensing_original_logo_fixed.svg)](https://sailbuoy.no) - [Book meeting](https://sailbuoy.no/contact) - [Build your Sailbuoy](https://sailbuoy.no/unmanned-surface-vessels) - [Explained by Offshore Sensing](https://sailbuoy.no/explained-by-offshore-sensing) - [Resources](https://sailbuoy.no/resources) Offshore Sensing AS Sandslimarken 31 5254 Sandsli, Norway   [Crowdworks Company Profile](https://app.crowdworks.it/companies/offshore-sensing/update) ©2026 Offshore Sensing AS. 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