{"id":18238,"date":"2026-06-03T00:25:27","date_gmt":"2026-06-03T08:25:27","guid":{"rendered":"https:\/\/toknavgnss.com\/?p=18238"},"modified":"2026-06-17T19:59:23","modified_gmt":"2026-06-18T03:59:23","slug":"best-echo-sounder-river-surveying","status":"publish","type":"post","link":"https:\/\/toknavgnss.com\/en\/best-echo-sounder-river-surveying\/","title":{"rendered":"Best Echo Sounder for River Surveying: Practical Hydrographic Survey Guide"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"18238\" class=\"elementor elementor-18238\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-788d7a25 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"788d7a25\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div 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data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Best Echo Sounder for River Surveying: Practical Hydrographic Survey Guide<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5ef34a31 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"5ef34a31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5cb28a05 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"5cb28a05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-calendar-alt\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M0 464c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V192H0v272zm320-196c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zm0 128c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zM192 268c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zm0 128c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zM64 268c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12H76c-6.6 0-12-5.4-12-12v-40zm0 128c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12H76c-6.6 0-12-5.4-12-12v-40zM400 64h-48V16c0-8.8-7.2-16-16-16h-32c-8.8 0-16 7.2-16 16v48H160V16c0-8.8-7.2-16-16-16h-32c-8.8 0-16 7.2-16 16v48H48C21.5 64 0 85.5 0 112v48h448v-48c0-26.5-21.5-48-48-48z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1369eafa elementor-widget elementor-widget-text-editor\" data-id=\"1369eafa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>2026-06-03<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-508d50b1 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"508d50b1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e070b62 elementor-widget elementor-widget-heading\" data-id=\"e070b62\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">1. Quick Overview: Why Echo Sounders Power River Hydrographic Surveys<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-712187ea elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"712187ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>At Toknav, we know echo sounders are the primary depth-sensing tool in hydrographic surveys, especially for riverbed mapping. In this guide, we break down the latest survey-grade models.<\/p><p>We also discuss practical workflows for river surveying. We\u2019ve built a detailed spec comparison table, picked the top 3 echo sounders for river use, and explained how your choice impacts survey accuracy and efficiency.<\/p><p>We\u2019ve added clear links and CTAs to help you explore our USV and support services for turnkey solutions.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-370b46e5 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"370b46e5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7d54f551 elementor-widget elementor-widget-text-editor\" data-id=\"7d54f551\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Professional echo sounder working for river surveying and hydrographic survey on field site<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6cea54a6 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6cea54a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-75723c57 elementor-widget elementor-widget-text-editor\" data-id=\"75723c57\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Hydrographic surveying maps underwater depths, terrain, and hidden obstacles. This ensures navigation safety and supports waterway engineering projects.<\/p><p>Rivers and shallow waterways present tricky challenges, including vegetation, turbidity, and shifting depths. That\u2019s why high-frequency 200 kHz echo sounders are our go-to for precise shallow-water detection.<\/p><p>Integrated GPS and RTK positioning are also must-haves. They tag every depth reading with accurate geographic coordinates for reliable mapping results.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4e4b5288 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4e4b5288\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3fad4d17 elementor-widget elementor-widget-heading\" data-id=\"3fad4d17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">2. Key Factors to Choose an Echo Sounder for River Surveying<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cb5c509 elementor-widget elementor-widget-text-editor\" data-id=\"4cb5c509\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Picking a suitable echo sounder makes all the difference for smooth field work. Below are the core factors every river surveyor should check before making a choice.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-56b82b31 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"56b82b31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-462432ad elementor-widget elementor-widget-heading\" data-id=\"462432ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.1 Frequency &amp; Signal Penetration<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22458fb2 elementor-widget elementor-widget-text-editor\" data-id=\"22458fb2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>High-frequency systems around 200 kHz deliver sharp detail in shallow river water. Lower frequencies (24\u201333 kHz) cut through murky water but use wider signal beams.<\/p><p>Dual-frequency echo sounders combine both strengths, letting you capture clear data no matter if the river is clear or filled with sediment and turbidity.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2609da1d e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"2609da1d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39c2c5b0 elementor-widget elementor-widget-heading\" data-id=\"39c2c5b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.2 Beam Angle<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea1d08f elementor-widget elementor-widget-text-editor\" data-id=\"ea1d08f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Narrow beams (3\u20135\u00b0) capture finer spatial details for precise river mapping. Wider beams (8\u201320\u00b0) cover more ground per ping but reduce detail level.<\/p><p>For example, our integrated echo sounder for Tboat USVs uses an 8\u00b0 beam at 200 kHz, striking a perfect balance between wide coverage and clear survey data for river routes.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-40cd59fb e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"40cd59fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f79e308 elementor-widget elementor-widget-heading\" data-id=\"2f79e308\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.3 Depth Range<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3090229a elementor-widget elementor-widget-text-editor\" data-id=\"3090229a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Most river surveys only require a 0\u2013100 m depth range. Still, models supporting 200 m or deeper add great flexibility for deep river channels.<\/p><p>Our echo sounder covers 0.3\u2013200 m, handling regular shallow rivers and deeper water sections without switching devices.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4ecae7e8 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4ecae7e8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7736452c elementor-widget elementor-widget-heading\" data-id=\"7736452c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.4 Accuracy &amp; Resolution<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff15445 elementor-widget elementor-widget-text-editor\" data-id=\"ff15445\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Professional survey-grade echo sounders reach centimeter-level accuracy. Our model offers \u00b12 cm depth accuracy for highly reliable river data.<\/p><p>Most modern devices hit \u00b10.01 m or 0.1% of measured depth, with 10\u201320 Hz ping rates boosting data density for fast-flowing river environments.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-92e9918 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"92e9918\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03d178c elementor-widget elementor-widget-heading\" data-id=\"03d178c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.5 Integration &amp; Interface<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a34c5da elementor-widget elementor-widget-text-editor\" data-id=\"a34c5da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Quality echo sounders support standard NMEA or Ethernet data output, like RS-232 and TCP\/IP. This allows for seamless connection with GNSS receivers and survey software.<\/p><p>All-in-one portable units that combine echo sounder and GNSS simplify setup. They are perfect for small survey boats working along narrow river sections.<\/p><p>Your echo sounder selection directly impacts final bathymetry results. A precise device delivers clear maps, while poor transducer choices can cause data errors or missing terrain features.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5befcb33 elementor-align-right elementor-widget elementor-widget-button\" data-id=\"5befcb33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/contact-us\/#contactus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Get Free Professional Advice | Inquire About Echo Sounder Selection<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d46fc38 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"5d46fc38\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1de9af69 elementor-widget elementor-widget-heading\" data-id=\"1de9af69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3. Echo Sounder Spec Comparison for River Surveys<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-725c5f93 elementor-widget elementor-widget-text-editor\" data-id=\"725c5f93\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>We\u2019ve sorted mainstream river survey echo sounders into a clear table below, with specs pulled directly from official product data for your easy reference.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6a2db5ac e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6a2db5ac\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6df1cd5a elementor-widget elementor-widget-text-editor\" data-id=\"6df1cd5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Main echo sounder models for river surveying and hydrographic survey specification display<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-91720b3 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"91720b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-0fa52dc e-con-full elementor-hidden-mobile e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"0fa52dc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4745ce elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"e4745ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Model<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-278c224 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"278c224\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Frequency<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e858cb3 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"e858cb3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Beam Angle<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1d3e5c elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"a1d3e5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Depth Range<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fcb7017 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"fcb7017\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Accuracy<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86bdc3b elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"86bdc3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Interface<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8835dc8 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"8835dc8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Ideal Use-Case<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a9f03dc e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"a9f03dc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de8c227 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"de8c227\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>TSBES (Single-beam Echosounder)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6f4f73 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"d6f4f73\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200k Hz<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40e1ba8 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"40e1ba8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>8\u00b0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3585eb5 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"3585eb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>0.5m-200m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3431388 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"3431388\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>1cm+0.1%h<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a38d5c elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"9a38d5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Lan,RS232(Baud<br \/>rate9600-230400)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c9817d elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"7c9817d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>For shallow mapping and portable small-boat hydrography.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-67b93c5 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"67b93c5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e64d5a elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5e64d5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>TMBES (Advanced Multibeam Echosounder)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e481f5 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"4e481f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>400k Hz<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dfc8e9e elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"dfc8e9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>8\u00b0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc2034a elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"fc2034a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>0.2m-150m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c8d1e49 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"c8d1e49\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>2cm+1ppm(RTK)<br \/>0.6m(SBAS)\/\/1.2m(single point)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33c4773 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"33c4773\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>RS-232<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a10615 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6a10615\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>High-resolution 3D mapping in shallow waters; multifunctional surveys from rivers to coastal areas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fa40030 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"fa40030\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eba9799 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"eba9799\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>SDE (Portable Dual Frequency Echo Sounder)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04b3ac0 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"04b3ac0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200k Hz &amp; 20k Hz standard<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efbf4c7 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"efbf4c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200k Hz: 7\u00b0<br \/>20k Hz: 20\u00b0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65e9139 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"65e9139\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200k Hz: 0.3m-200m<\/p><p>20k Hz: 0.5m-600m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e45f34c elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"e45f34c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200 kHz: \u00b11cm\u00b10.1%D<\/p><p>20 kHz: \u00b110cm\u00b10.1%D<\/p><p>(D is the depth value)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6999736 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6999736\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>3* RS232, 1* RS485, 1 power <br \/>supply interface, 1 transducer <br \/>port and 1 LAN port<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c32321f elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"c32321f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>High frequency for shallow mapping &amp; silt thickness; low frequency for rivers to deep seas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4b4277 e-con-full elementor-hidden-desktop elementor-hidden-tablet e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"b4b4277\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f505700 elementor-widget elementor-widget-image\" data-id=\"f505700\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"306\" src=\"https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-1024x306.png\" class=\"attachment-large size-large wp-image-18343\" alt=\"\" srcset=\"https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-1024x306.png 1024w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-300x90.png 300w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-768x229.png 768w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-18x5.png 18w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6.png 1098w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29c388a0 elementor-widget-tablet__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"29c388a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Each model has its own strengths for different river survey scenarios. Check your on-site conditions and working tools to pick the most matched solution for your team.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f868ab9 elementor-widget-tablet__width-initial elementor-widget elementor-widget-button\" data-id=\"f868ab9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/contact-us\/#contactus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request Full Datasheets | Get Custom Price Quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2ee3ecc0 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"2ee3ecc0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a9b399e elementor-widget elementor-widget-heading\" data-id=\"6a9b399e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">4. Top 3 Recommended Echo Sounders for River Survey Projects<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69bd0e48 elementor-widget elementor-widget-text-editor\" data-id=\"69bd0e48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>After comparing performance, portability and field adaptability, we\u2019ve picked 3 top models tailored for daily river hydrographic survey work.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-72c11f29 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"72c11f29\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6294fcf9 elementor-widget elementor-widget-heading\" data-id=\"6294fcf9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.1 TSBES (Single-beam Echosounder)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3af107cb elementor-widget elementor-widget-text-editor\" data-id=\"3af107cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>This single-beam sounder is built exclusively for our Tboat USVs, delivering centimeter-level precision for shallow river mapping.<br \/>Its 8\u00b0 beam suits narrow river channels well. Built-in GNSS and RTK sync plus noise filters keep data stable even in turbid river water.<br \/>The plug-and-play design works perfectly with our USVs, cutting down setup time and improving overall safety during long professional survey missions.<br \/>It stands out for ultra-precise river bathymetry, letting you get detailed underwater terrain with minimal manual operation from your team.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2f3bb412 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"2f3bb412\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1da93fc elementor-widget elementor-widget-heading\" data-id=\"1da93fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.2 TMBES (Advanced Multibeam Echosounder)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15a2d183 elementor-widget elementor-widget-text-editor\" data-id=\"15a2d183\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>This portable dual-frequency echo sounder comes with built-in data logging, ideal for mobile river survey teams.<br \/>Running at 400 kHz with a 8\u00b0 beam, it covers 0.2\u2013150 m depth and maintains \u00b12cm (\u00b10.1%) accuracy across full ranges.<br \/>Its compact all-in-one body fits small boats, kayaks and jet skis. Advanced DSP supports 20 Hz ping rate and clear echograms to tell river vegetation apart from real riverbeds.<br \/>Independent surveyors love this rugged device. It\u2019s easy to deploy, records complete data and connects smoothly with external GPS units for shallow river channel mapping.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-72bbd99a e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"72bbd99a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-102f8a94 elementor-widget elementor-widget-heading\" data-id=\"102f8a94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"> 4.3 SDE (Portable Dual Frequency Echo Sounder)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6dd9a43f elementor-widget elementor-widget-text-editor\" data-id=\"6dd9a43f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>This dual-channel echo sounder features a wide frequency range from 20 kHz to 200k Hz for flexible field use.<br \/>Pair it with a 200k Hz transducer for a narrow 20\u00b0 beam. It supports depths from 0.3m shallow water up to 600m for multi-scene surveys.<br \/>As a trusted industry workhorse, it reaches 20k Hz ping rate and steady \u00b10.01 m (\u00b10.1%) accuracy at 200k Hz.<br \/>Multiple interfaces including RS-232 and Ethernet ensure easy connection with GPS and survey software. It works reliably from narrow rivers to deep waterways.<br \/>All three models have passed real-field tests. Our USVs run stably even under strong cross-currents, while CEE devices serve river and coastal surveys worldwide.<br \/>Always follow standard workflows: finish pre-survey planning, calibrate GNSS and collect data systematically with boats or USVs for best results.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6bb00cb elementor-align-right elementor-widget elementor-widget-button\" data-id=\"6bb00cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/contact-us\/#contactus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Talk to Our Experts | Match Echo Sounder for Your River Project<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b295f36 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"b295f36\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56069eb elementor-widget elementor-widget-heading\" data-id=\"56069eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">5. Standard Hydrographic Survey Workflow for River Mapping<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3b29fe elementor-widget elementor-widget-text-editor\" data-id=\"d3b29fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>At Toknav, we recommend following this standardized workflow to ensure consistent, high-quality river survey results. Calibrating your echo sounder properly is key to getting reliable, accurate river bathymetry data you can trust.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc09302 elementor-widget elementor-widget-text-editor\" data-id=\"fc09302\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>This workflow follows 6 essential steps, with your echo sounder playing a starring role at every stage:<\/p><p>Project Planning: Map survey lines and note river conditions (depth, flow, obstacles) to plan an efficient, complete route.<\/p><p>Equipment Setup &#038; Calibration: Calibrate your echo sounder and RTK GNSS together to ensure depth readings tie to accurate coordinates.<\/p><p>Field Deployment: Use a manned boat or our Tboat USV to follow your planned route safely, even in tricky river sections.<\/p><p>Data Collection: Your echo sounder captures real-time depth pings, paired with GNSS positions to build detailed riverbed data.<\/p><p>Post-Processing &#038; QC: Filter noise and check for inconsistencies to clean your dataset before moving to mapping.<\/p><p>Chart Production: Turn processed data into a clear hydrographic chart, with sharp detail thanks to high-quality echo sounder data.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d327c4 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4d327c4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e88f1d6 elementor-widget elementor-widget-heading\" data-id=\"e88f1d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">6. Toknav Integrated River Survey Solutions &amp; Final Tips<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14018ce elementor-widget elementor-widget-text-editor\" data-id=\"14018ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>At Toknav, we deliver one-stop hydrographic packages including USVs, echo sounders and GNSS receivers to simplify your entire river survey process.<br \/>Our Tboat USVs come pre-installed with echo sounders and RTK receivers out of the box, so you can start efficient river data collection right after on-site deployment.<br \/>If you need detailed technical specs or personalized equipment configurations, browse our product pages or reach out to our team for expert guidance.<br \/>We\u2019ll tailor the perfect USV and echo sounder combination to fit your unique river or coastal survey project demands.<br \/>Whether you handle regular river mapping, engineering surveys or long-term monitoring, our integrated solutions save your time and cut operational costs greatly.<br \/>Ready to upgrade your river survey setup with reliable autonomous equipment? Explore our full range of unmanned surface vehicles now: <a href=\"\/en\/toknav-unmanned-surface-vehicle\/\">Click here to learn more about Toknav USVs and build your ideal survey system today.<\/a><\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home Best Echo Sounder for River Surveying: Practical Hydrographic Survey Guide 2026-06-03 1. Quick Overview: Why Echo Sounders Power River Hydrographic Surveys At Toknav, we know echo sounders are the primary depth-sensing tool in hydrographic surveys, especially for riverbed mapping. In this guide, we break down the latest survey-grade models. We also discuss practical workflows for river surveying. We\u2019ve built a detailed spec comparison table, picked the top 3 echo sounders for river use, and explained how your choice impacts survey accuracy and efficiency. We\u2019ve added clear links and CTAs to help you explore our USV and support services for turnkey solutions. Professional echo sounder working for river surveying and hydrographic survey on field site Hydrographic surveying maps underwater depths, terrain, and hidden obstacles. This ensures navigation safety and supports waterway engineering projects. Rivers and shallow waterways present tricky challenges, including vegetation, turbidity, and shifting depths. That\u2019s why high-frequency 200 kHz echo sounders are our go-to for precise shallow-water detection. Integrated GPS and RTK positioning are also must-haves. They tag every depth reading with accurate geographic coordinates for reliable mapping results. 2. Key Factors to Choose an Echo Sounder for River Surveying Picking a suitable echo sounder makes all the difference for smooth field work. Below are the core factors every river surveyor should check before making a choice. 2.1 Frequency &amp; Signal Penetration High-frequency systems around 200 kHz deliver sharp detail in shallow river water. Lower frequencies (24\u201333 kHz) cut through murky water but use wider signal beams. Dual-frequency echo sounders combine both strengths, letting you capture clear data no matter if the river is clear or filled with sediment and turbidity. 2.2 Beam Angle Narrow beams (3\u20135\u00b0) capture finer spatial details for precise river mapping. Wider beams (8\u201320\u00b0) cover more ground per ping but reduce detail level. For example, our integrated echo sounder for Tboat USVs uses an 8\u00b0 beam at 200 kHz, striking a perfect balance between wide coverage and clear survey data for river routes. 2.3 Depth Range Most river surveys only require a 0\u2013100 m depth range. Still, models supporting 200 m or deeper add great flexibility for deep river channels. Our echo sounder covers 0.3\u2013200 m, handling regular shallow rivers and deeper water sections without switching devices. 2.4 Accuracy &amp; Resolution Professional survey-grade echo sounders reach centimeter-level accuracy. Our model offers \u00b12 cm depth accuracy for highly reliable river data. Most modern devices hit \u00b10.01 m or 0.1% of measured depth, with 10\u201320 Hz ping rates boosting data density for fast-flowing river environments. 2.5 Integration &amp; Interface Quality echo sounders support standard NMEA or Ethernet data output, like RS-232 and TCP\/IP. This allows for seamless connection with GNSS receivers and survey software. All-in-one portable units that combine echo sounder and GNSS simplify setup. They are perfect for small survey boats working along narrow river sections. Your echo sounder selection directly impacts final bathymetry results. A precise device delivers clear maps, while poor transducer choices can cause data errors or missing terrain features. Get Free Professional Advice | Inquire About Echo Sounder Selection 3. Echo Sounder Spec Comparison for River Surveys We\u2019ve sorted mainstream river survey echo sounders into a clear table below, with specs pulled directly from official product data for your easy reference. Main echo sounder models for river surveying and hydrographic survey specification display Model Frequency Beam Angle Depth Range Accuracy Interface Ideal Use-Case TSBES (Single-beam Echosounder) 200k Hz 8\u00b0\u00a0 0.5m-200m 1cm+0.1%h Lan,RS232(Baudrate9600-230400) For shallow mapping and portable small-boat hydrography. TMBES (Advanced Multibeam Echosounder) 400k Hz 8\u00b0\u00a0 0.2m-150m 2cm+1ppm(RTK)0.6m(SBAS)\/\/1.2m(single point) RS-232 High-resolution 3D mapping in shallow waters; multifunctional surveys from rivers to coastal areas. SDE (Portable Dual Frequency Echo Sounder) 200k Hz &amp; 20k Hz standard 200k Hz: 7\u00b020k Hz: 20\u00b0 200k Hz: 0.3m-200m 20k Hz: 0.5m-600m 200 kHz: \u00b11cm\u00b10.1%D 20 kHz: \u00b110cm\u00b10.1%D (D is the depth value) 3* RS232, 1* RS485, 1 power supply interface, 1 transducer port and 1 LAN port High frequency for shallow mapping &amp; silt thickness; low frequency for rivers to deep seas. Each model has its own strengths for different river survey scenarios. Check your on-site conditions and working tools to pick the most matched solution for your team. Request Full Datasheets | Get Custom Price Quote 4. Top 3 Recommended Echo Sounders for River Survey Projects After comparing performance, portability and field adaptability, we\u2019ve picked 3 top models tailored for daily river hydrographic survey work. 4.1 TSBES (Single-beam Echosounder) This single-beam sounder is built exclusively for our Tboat USVs, delivering centimeter-level precision for shallow river mapping.Its 8\u00b0 beam suits narrow river channels well. Built-in GNSS and RTK sync plus noise filters keep data stable even in turbid river water.The plug-and-play design works perfectly with our USVs, cutting down setup time and improving overall safety during long professional survey missions.It stands out for ultra-precise river bathymetry, letting you get detailed underwater terrain with minimal manual operation from your team. 4.2 TMBES (Advanced Multibeam Echosounder) This portable dual-frequency echo sounder comes with built-in data logging, ideal for mobile river survey teams.Running at 400 kHz with a 8\u00b0 beam, it covers 0.2\u2013150 m depth and maintains \u00b12cm (\u00b10.1%) accuracy across full ranges.Its compact all-in-one body fits small boats, kayaks and jet skis. Advanced DSP supports 20 Hz ping rate and clear echograms to tell river vegetation apart from real riverbeds.Independent surveyors love this rugged device. It\u2019s easy to deploy, records complete data and connects smoothly with external GPS units for shallow river channel mapping. 4.3 SDE (Portable Dual Frequency Echo Sounder) This dual-channel echo sounder features a wide frequency range from 20 kHz to 200k Hz for flexible field use.Pair it with a 200k Hz transducer for a narrow 20\u00b0 beam. It supports depths from 0.3m shallow water up to 600m for multi-scene surveys.As a trusted industry workhorse, it reaches 20k Hz ping rate and steady \u00b10.01 m (\u00b10.1%) accuracy at 200k Hz.Multiple interfaces including RS-232 and Ethernet ensure easy connection with GPS and survey software. It works reliably from narrow rivers to deep waterways.All three models<\/p>\n","protected":false},"author":1,"featured_media":18244,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[53],"tags":[],"class_list":["post-18238","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat.jpg",1536,1024,false],"thumbnail":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-150x150.jpg",150,150,true],"medium":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-300x200.jpg",300,200,true],"medium_large":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-768x512.jpg",768,512,true],"large":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-1024x683.jpg",1024,683,true],"1536x1536":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat.jpg",1536,1024,false],"2048x2048":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat.jpg",1536,1024,false],"trp-custom-language-flag":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-18x12.jpg",18,12,true]},"uagb_author_info":{"display_name":"jeffreyrtk@gmail.com","author_link":"https:\/\/toknavgnss.com\/en\/author\/jeffreyrtkgmail-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Home Best Echo Sounder for River Surveying: Practical Hydrographic Survey Guide 2026-06-03 1. Quick Overview: Why Echo Sounders Power River Hydrographic Surveys At Toknav, we know echo sounders are the primary depth-sensing tool in hydrographic surveys, especially for riverbed mapping. In this guide, we break down the latest survey-grade models. We also discuss practical workflows&hellip;","_links":{"self":[{"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/posts\/18238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/comments?post=18238"}],"version-history":[{"count":67,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/posts\/18238\/revisions"}],"predecessor-version":[{"id":18879,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/posts\/18238\/revisions\/18879"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/media\/18244"}],"wp:attachment":[{"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/media?parent=18238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/categories?post=18238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toknavgnss.com\/en\/wp-json\/wp\/v2\/tags?post=18238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}