{"product_id":"chcnav-hn-400m-multibeam-echosounder-hn-400m","title":"CHCNAV HN-400M Multibeam Echosounder - HN-400M","description":"\u003cp\u003e\u003cb\u003eCHCNAV HN-400M Multibeam Echosounder\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eModel Number: \u003c\/strong\u003eHN-400M\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe CHCNAV HN-400M is a compact, dual-frequency multibeam echosounder built for hydrographic surveys. Designed for conditions where turbidity, depth variation, and vessel motion can affect data quality, it combines 400 kHz and 550 kHz operation, a 0.03° high-precision integrated IMU, and a lightweight 3.5 kg form factor for rapid USV deployment. From channel dredging and port inspection to river and lake surveys, it delivers reliable bathymetric data with no calibration required during installation.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual-Frequency Operation:The HN-400M enables seamless switching between 400 kHz and 550 kHz. The 550 kHz mode supports high-resolution shallow-water surveys, while 400 kHz with FM chirp improves penetration in deep and turbid conditions. One system supports consistent performance from inland lakes to offshore environments.\u003c\/li\u003e\n\u003cli\u003e0.03° High-Precision IMU: The integrated IMU provides centimeter-level real-time motion compensation. It suppresses vessel roll, pitch, and heave, reducing data drift and preventing broken survey lines in offshore harbors up to Sea State 3. The HN-400M ensures continuous and reliable data acquisition in rough conditions.\u003c\/li\u003e\n\u003cli\u003e145° Wide Swath Coverage: With swath coverage up to 6 times the water depth, the HN-400M reduces the number of survey lines required and minimizes vessel transit time. The HN-400M improves survey efficiency, lowers operational costs, and enables comprehensive bathymetric coverage in a single deployment.\u003c\/li\u003e\n\u003cli\u003eLightweight Integration: The integrated design and lightweight structure support rapid deployment on USVs and manned vessels. Weighing only 3.5 kg, the HN-400M reduces installation constraints and simplifies operations on compact platforms. No calibration is required during installation.\u003c\/li\u003e\n\u003cli\u003eEasySail Android Software: EasySail provides a one-touch workflow for device connection, parameter configuration, data acquisition, and real-time preview. It simplifies field operations, reduces technical barriers, and supports efficient and consistent survey execution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEchosounder\n\u003cul\u003e\n\u003cli\u003eType : Multibeam, 400 kHz\/550 kHz\u003c\/li\u003e\n\u003cli\u003eRange : 0.2 to 200 m\u003c\/li\u003e\n\u003cli\u003eAccuracy : \u0026lt; 10 mm resolution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhysical\n\u003cul\u003e\n\u003cli\u003eWeight : 3.5 kg\u003c\/li\u003e\n\u003cli\u003eSize : 161.5 × 111.5 × 179 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensors\n\u003cul\u003e\n\u003cli\u003eSVS : Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePositioning\n\u003cul\u003e\n\u003cli\u003eGNSS : Yes\u003c\/li\u003e\n\u003cli\u003eIMU : Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eInfo and Guides:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.w3schools.com\/Images\/CHCNAV\/Manuals\/HN-400M_DS_EN.pdf\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0962\/3234\/1874\/files\/HN-400M_DS_EN.pdf?v=1794503791\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eClick Here for Data Sheet\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eDisclaimer:\u003c\/b\u003e Some products featured on this page may require additional software to function properly. Such software may be sold separately and is not included in the listed product price. Please review individual product specifications for complete system requirements and compatibility details. For further information, please contact our sales team at sales@engineersupply.com, who will be happy to assist you.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFAQs:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the best multibeam echosounder for shallow water surveys?\n\u003cul\u003e\n\u003cli\u003eA multibeam echosounder with high-frequency operation, such as 550 kHz, is well suited for shallow water surveys because it provides higher resolution and more detailed seabed mapping. Systems with dual-frequency capability allow users to adapt to varying depths while maintaining data quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eHow to choose a multibeam echosounder for turbid water conditions?\n\u003cul\u003e\n\u003cli\u003eIn turbid or sediment-rich waters, lower frequencies such as 400 kHz improve signal penetration and bottom detection. A dual-frequency multibeam system allows operators to switch between resolution and penetration depending on water conditions, ensuring reliable results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhat is swath coverage in multibeam surveying?\n\u003cul\u003e\n\u003cli\u003eSwath coverage refers to the width of the seafloor area measured in a single pass. It is typically expressed in degrees or as a multiple of water depth. Wider swath coverage, such as up to 145° or 6 times water depth, reduces survey lines and improves efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eHow does INS improve multibeam survey accuracy?\n\u003cul\u003e\n\u003cli\u003eAn inertial navigation system compensates for vessel motion, including roll, pitch, and heave. High-precision INS ensures stable data acquisition, reduces positioning errors, and maintains consistent survey quality, especially in dynamic or nearshore environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan multibeam echosounders be used on unmanned surface vessels (USVs)?\n\u003cul\u003e\n\u003cli\u003eYes, many modern multibeam echosounders are designed for integration with USVs. Lightweight and compact systems enable deployment on small platforms, supporting efficient and safe data collection in shallow, hazardous, or hard-to-access areas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eHow does dual-frequency improve bathymetric survey efficiency?\n\u003cul\u003e\n\u003cli\u003eDual-frequency operation allows surveyors to adapt to different environments without changing equipment. High frequency supports detailed shallow-water mapping, while lower frequency ensures reliable depth detection in deeper or complex conditions, reducing the need for multiple survey passes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhat is the price of the CHCNAV HN-400M multibeam echosounder?\n\u003cul\u003e\n\u003cli\u003eThe price of the HN-400M multibeam echosounder depends on the configuration you choose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle beam vs multibeam echosounder, which does the HN-400M use?\n\u003cul\u003e\n\u003cli\u003eThe HN-400M is a multibeam echosounder. Multibeam covers a wide swath of up to 145° per pass, while single-beam echosounders measure one single depth line at a time. Multibeam is faster for broader area surveys.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eDoes the HN-400M need calibration before deployment?\n\u003cul\u003e\n\u003cli\u003eNo. The HN-400M is calibration-free at install. The integrated IMU and transducer are factory-aligned, so the unit is ready for survey work as soon as it is powered up on the vessel or USV.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhat is the typical operating depth range for the HN-400M?\n\u003cul\u003e\n\u003cli\u003eThe HN-400M typically operates within a depth range of 0.2 m to 200 m, with actual performance depending on environmental factors such as water temperature and salinity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHCNAV","offers":[{"title":"Default Title","offer_id":62858339352946,"sku":"ET22518","price":140000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/3234\/1874\/files\/ET22518-CHCNAV-HN-400M-Multibeam-Echosounder-HN-400M-2000x2000.jpg?v=1794503690","url":"https:\/\/allenprecision.com\/products\/chcnav-hn-400m-multibeam-echosounder-hn-400m","provider":"Allen Precision Equipment","version":"1.0","type":"link"}