{"title":"Multibeam","description":null,"products":[{"product_id":"chcnav-hn-400m-dual-frequency-multibeam-echosounder","title":"CHCNAV HN-400M Dual-Frequency Multibeam Echosounder","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe CHCNAV HN-400M is a compact dual-frequency multibeam echosounder designed for professional hydrographic surveys in demanding conditions — turbid water, depth variation and vessel motion included. Dual-frequency operation at 400 kHz and 550 kHz delivers both high-resolution shallow-water performance and improved penetration at depth or in turbid conditions from a single instrument. A 0.03° high-precision integrated IMU provides centimetre-level real-time motion compensation, maintaining survey line continuity at up to Sea State 3 — suppressing vessel roll, pitch and heave to prevent broken survey lines in offshore harbour conditions. At 145° swath coverage and up to 6 times water depth, the HN-400M significantly reduces the number of survey lines needed for complete coverage. Calibration-free installation means it's ready to survey immediately on arrival at site, with full field control via CHCNAV EasySail in one touch. \u003c\/span\u003e\u003c\/p\u003e","brand":"CHCNAV","offers":[{"title":"Default Title","offer_id":55009692909897,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1022\/7482\/6569\/files\/HN-400m.webp?v=1786610772"},{"product_id":"chcnav-hq-400m-integrated-multibeam-echosounder","title":"CHCNAV HQ-400M Integrated Multibeam Echosounder","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe CHCNAV HQ-400 is a compact, fully integrated multibeam echosounder in a 12.5 cm cubic form factor weighing just 2.7 kg -\u003c\/span\u003e\u003cspan\u003ecombining sonar, temperature sensor, attitude sensor, positioning sensor and compass in a single all-in-one hardware package with no complex wiring and ready to use straight from the case. With 512 beams (digitally expanded to 1,024) and 140° swath coverage, it delivers dense, full-coverage bathymetric data across rivers, lakes, ports and dredging sites.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e T\u003c\/span\u003e\u003cspan\u003ehe built-in calibration-free IMU saves 50% of preparation time compared to traditional multibeam setups, and is stable even with poor satellite reception or wave turbulence - providing reliable data output in complex water conditions. GNSS PPK support ensures accurate positioning even where live RTK corrections are unavailable. \u003c\/span\u003e\u003c\/p\u003e","brand":"CHCNAV","offers":[{"title":"Default Title","offer_id":55010564735305,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1022\/7482\/6569\/files\/3-1.png?v=1786105019"}],"url":"https:\/\/surveyequipment.uk\/collections\/multibeam.oembed","provider":"Tri-Site Survey Equipment","version":"1.0","type":"link"}