NexSens CB-75 Data Buoy

The CB-75 Data Buoy is a compact, affordable, and easy to deploy platform for both water and atmospheric observations. The buoy is designed to integrate the X3-SUB Submersible Data Logger, which includes external sensor ports to support weather stations, thermistor strings, multi-parameter sondes, Doppler current profilers, GPS, and other monitoring instruments.

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With an 53.34cm hull diameter and less than 20KG, the CB-75 is ideally suited for tethered moorings.


Self Powered:


Three integrated 4-watt solar panels are evenly spaced around the buoy to capture sunlight from any direction and charge the internal buoy battery


Data Logging:


The CB-75 data buoy is designed for integration with the X3-SUB submersible data logger with integrated power supply, wet-mate marine connectors and optional wireless telemetry.


Sensor Connections:


Three sensor ports with wet-mate connectors on the X3-SUB submersible data logger allow for integration with GPS receivers, meteorological stations, water quality sondes and other sensor types.


Wireless Communications:


The X3-SUB submersible data logger is available with 4G cellular or Iridium satellite communications. The integrated antenna is nestled securely beneath the solar top.


Top to Bottom Ports:


Three 1.5-inch pass-through ports allow for sensors to be mounted underwater while securely routing the cable. Each port includes a slotted cap secured by hex bolts.


Mooring Connections:


Three eye nuts on the bottom frame provide mooring points for tethering and mooring applications. The stainless steel instrument cage provides ballast weight and also includes a mooring eye.


Instrument Cage:


The included instrument cage supports water quality sensors, multi-parameter sondes, ADCPs, and other subsurface instruments


Solar Beacon:


The optional solar marine light has a one to three nautical mile range and securely mounts to the buoy top plate for maximum visibility.

Built to Last:


Constructed of cross-linked polyethylene foam with a heavy polymer skin and an indestructible stainless steel frame, the CB-75 is designed for years of service.


Hull Outer Diameter: 21” (53.34cm)
Hull Height: 13” (33.02cm)
Center Hole Inner Diameter: 5.5” (13.97cm)
Center Hole Height: 13″ (33.02cm)
Pass-Through Hole Diameter: 1.5″ (3.81cm)
Tower Height: 8.2” (20.83cm)
Solar Panels: 3x 4-watts
Weight: 28 lb. (12.70kg); 40 lb. (18.20kg) with X3-SUB
Net Buoyancy: 75 lb. (34.00kg)
Hull Material: Cross-linked polyethylene foam with polyurea coating and stainless steel deck
Hardware Material: 316 stainless steel, 304 stainless steel (lifting handles)
Tethering Attachments: 3x 3/8” eye nuts


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