CB-25-SVS Wave Buoy
Photo Credit: David J. Ruck - Great Lakes Outreach Media
Photo Credit: David J. Ruck - Great Lakes Outreach Media
Photo Credit: David J. Ruck - Great Lakes Outreach Media
Photo Credit: David J. Ruck - Great Lakes Outreach Media

CB-25-SVS Wave Buoy

The CB-25-SVS Wave Buoy offers the latest in real-time wave observations in a compact, affordable, and easy to deploy platform.





At 18” hull diameter and less than 30 lb. (13.6kg) weight, the CB-25-SVS can measure waves in drifting, tethering or mooring applications.


Tech Specs

  • Wave Sensor: SeaView Systems SVS-603HRi
  • Available Wave Parameters: Significant wave height, dominant period, wave direction, mean wave direction and more
  • Range: Wave Height: 0.2-20m; Wave Period: 1.5-20 seconds; Wave Direction: 0-360°
  • Resolution: Wave Height: 0.001m; Wave Period: 0.001 seconds; Wave Direction: 0.001°
  • Accuracy: Wave Height: +/- 0.5cm; Wave Period: <1%; Wave Direction: +/-2°
  • Diagnostic Sensors: Internal temperature (-40C to 85C, 0.1C resolution, ±0.3C accuracy); Humidity (0% to 100%, 0.1% resolution, ±4% accuracy from 5 to 95% RH & -20 to 70C); Battery voltage
  • Optional Water Sensors: Surface temperature, single-parameter sensors, multi-parameter sondes
  • Optional Atmospheric Sensors: Single and multi-parameter weather sensors
  • Optional Position Sensor: Marine GNSS receiver or standalone asset tracking device
  • Sensor Interfaces: SDI-12, RS-232 (3 channels), RS-485
  • Sensor Ports: (2) External sensor ports, expandable using splitters
  • Battery: 12 VDC sealed lead acid (SLA) battery, 6.0 A-Hr
  • Solar Power: (3) 4-watt 12 VDC solar panels
  • Serial Interface: Direct RS-485 via USB adapter (for setup)
  • Wi-Fi Interface: 802.11b/g/n (for setup)
  • Cellular: 4G: LTE Bands B2(1900), B4(1700), B5(850), B12(700ac), B13(700c)
  • Iridium Satellite: Short Burst Data (SBD) 1616 MHz to 1626.5 MHz
  • Cloud Datacenter:  WQData LIVE web portal with auto data export to NDBC, GLOS, and others (configurable on web portal)
  • Data Logging: 256MB microSD card (expandable up to 32GB)
  • Hull Dimensions: 18” (45.72cm) outside diameter; 11” (27.94cm) tall
  • Tower Dimensions: 8” (20.32cm) tall, triangular
  • Center Hole Dimension: 5.5" (13.97cm) inside diameter
  • Weight: 30 lbs. (13.61 kg)
  • Net Buoyancy: 25 lbs. (11.34 kg)
  • Hull Material: Cross-linked polyethylene foam with polyurea coating & stainless steel deck
  • Hardware Material: 316 stainless steel
  • Mooring Attachments: (4) 3/8” eye nuts
  • Operating Temperature: -20C to 70°C
  • Warranty: 12 months. See terms at nexsens.com/support/warranty
  • Place of Manufacture: Ohio & Michigan, USA
  • Field Verification: Tested and verified by LimnoTech, Ann Arbor, MI

Case Studies

Sturdy Little Buoy, Tremendous Predictive Power

Two solitary data buoys floating off the storm-tossed Lake Superior shore near Munising and Granite Island were sudden stars in 2017. That October, they captured the largest waves ever measured on the Great Lakes—each 28.8-foot high—during a storm that claimed the lives of two people swept off rocks. This attention-getting event shows how buoy data help managers and the public comprehend the otherwise unimaginable force of a wild Lake Superior […]

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A New Kind of Sentinel on Lake Superior

For more than 100 years, the Stannard Rock Lighthouse has kept a watchful guard over Lake Superior. But now, a new weather buoy is joining the watch in a remote part of Lake Superior, providing much-needed weather data to local mariners, the National Weather Service (NWS), and researchers. Scientists from the Superior Watershed Partnership (SWP), Lentic Environmental Services (LES), and the University of Colorado-Boulder deployed the buoy on the lake […]

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Kadettangen Beach Construction Project

Not far from Oslo, Norway, a massive effort is underway to expand a public beachfront. The work is taking place along an area of Oslofjord called Kadettangen, a small peninsula that juts out into the bay. Once the work is finished, public officials expect that the new beach area, along with other enhancements planned for the peninsula like bike paths and volleyball courts, will help attract visitors from near and […]

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