The CB-50 data buoy is designed for quick deployment in emergency response situations including industrial spills and natural disasters



With an overall 18-inch diameter by 37.5-inch height, the CB-50 can be deployed quickly and easily from a small boat. Fully configured systems typically weigh around 50 lbs.


A removable topside foam tower protects the electronics, supports solar marine lights, and offers a convenient lifting point via (3) 5/8” eyenuts.

Center Hole

The 5.5” ID center hole is designed to securely house SDL V2 data loggers. Empty canisters are also available for user-supplied electronics.

Sensor Connections

The SDL V2 is configured with three sensor ports for connection to industry standard communication protocols including SDI-12 and RS-485.

Instrument Cage

An optional instrument cage provides a secure mounting location for water quality sensors, multi-parameter sondes, depth sonar and more.

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.

Data Logging

The CB-50 data buoy is designed to accommodate the NexSens SDL V2 submersible data logging system, which includes integrated power supply and optional wireless telemetry.

Wireless Communications

The SDL V2 data logger is available with radio-to-shore, cellular and Iridium satellite communications. An integrated antenna mounts securely beneath the tower.

Built to Last

Constructed of cross-linked polyethylene foam with a heavy polymer skin and an indestructible stainless steel frame, the CB-50 is designed for years of service.
Hull Dimensions20" (50.80 cm) outside diameter; 12" (30.48 cm) tall
Tower Dimensions14" (35.56 cm) outside diameter; 10" (25.40 cm) tall
Center Hole Dimension5.5" (13.97 cm) inside diameter
Weight37 lbs. (16.78 kg) no payload; 50 lbs. (22.68 kg) with SDL500 and solar marine light
Buoyancy50 lbs. (22.68 kg)
Hull MaterialCross-linked polyethylene foam with polyurea coating & stainless steel deck
Hardware Material316 stainless steel
Mooring Attachments1 point, 3/4" eyenut