Centre for in situ Observational Oceanography

Coastal Buoy - Data Buoy


  • Reliably collect near real-time data unattended from coastal waters for prolonged periods of time
  • Proven instruments provide accurate oceanographic and meteorological data
  • Easily transported by road and deployed from small craft


Data Buoy II (DB II) is a real-time coastal monitoring platform designed to be deployed for many unattended months in a range of sea conditions.

DB II measures oceanographic and meteorological conditions in coastal waters and sends data to a land based server by means of standard cellular or global satellite telemetry.

DB II's have been successfully deployed in South-African waters collecting data for factories and oceanographers.


Overall Length6.2m
Flotation Diameter0.49m
Main Body Diameter0.2m
Mass110kg (excluding counterweight)
ConstructionClass 12 PVC with 12mm glass-fibre shroud encapsulated with 362 PVR resin
Maximum Mooring Depth200m
Maximum Current4 knots
Bottom to SurfaceLinkquest UWM 2000
TelemetryCellular, GSM or GPRS (standard)
Optional2 way radio
Global satellite
Batteries108A/h capacity
Solar Panel20W PV panel

DB II has proven oceanographic instruments to measure and log a multitude of data. DB II's architecture accommodates a variety of sensors:

Teledyne Workhorse ADCP

  • Currents
  • Waves
  • Bottom Temperature

Airmar PB200 Weather Station

  • Wind speed and direction
  • Air temperature
  • Barometric pressure

Optional Sub-surface oceanographic sensors include

  • CTP
  • Turbidity
  • Oxygen
  • pH & Radox
  • pH
  • Fluorescence

Download brochure