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Mooring place



Monitoring from a stationary position

Oceanographic buoy / Boya oceanográfica


The meteorological and oceanographic buoy has a toroid-shaped surface buoy, also called "Donut", holding various oceanographic and meteorological instruments along with a GSM (modem) for telemetry, data logger for data storage, GPS, and batteries charged by a set of photovoltaic panels through a charge controller.

Connections among the system components are done with neoprene rubber and polyurethane-jacketed cables and Sub Conn connectors.

The toroid-shaped buoy is helpful for holding instrumentation submerged near the surface, thus providing reliable measurements from shallower water layers.

Main features

  • Active and passive signaling in accordance with regulations in force (Cruz de San Andrés, night flash, radar reflector, body painted yellow and indications of the property).
  • Minimum buoyancy of 200 kg.
  • Dimensions of Ø 2000 x 500 mm.
  • Mast height of 2000 mm above sea level.
  • Flotation Material: Dense polystyrene covered with fiberglass, 10 mm thick and high resistance.
  • Structures and substructures are of stainless steel 316L.
  • Zinc anodes for cathode protection to avoid salt-water corrosion, are interchangeable
  • Waterproof room for storing batteries, data logger and additional electrical devices
  • Ballast weight for keeping the buoy structure upright
  • GPS
  • Rechargeable battery and photovoltaic panels
  • Data acquisition system (data logger)
  • Telemetry system (GSM/GPRS)

Oceanographic instruments

One SBE37 Microcat CT measures surface water temperature and salinity.

Two SBE 16 plus IM inductively coupled to the mooring cable at 25 and 50 m depth equipped with the following sensors:

  • Temperature
  • Salinity
  • Dissolved Oxygen
  • Irradiance (PAR)
  • Turbidity
  • Chlorophyll fluorescence

One Workhorse Monitor ADCP (Acoustic Doppler Current Profiler) that converts the backscattered sound into components of water current velocity in the upper 120 m water layer.

Meteorological instruments

A meteorological station consisting of a number of instruments to measure:

  • Wind velocity and direction
  • Surface irradiance (PAR)
  • Air temperature
  • Relative humidity
  • Atmospheric pressure