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SEAWATCH buoys and sensors

Fugro OCEANOR manufactures a range of products for environmental monitoring. The main product line, the SEAWATCH range of products, are designed for real time ocean monitoring and span from large regional systems to single buoys. 

Environmental data may also be integrated by the system from a number of other sources. For example, in order to build the best basis for national and international weather service operations, data from Seawatch sensors may be integrated with data from research vessels, weather ships, free-floating buoys as well as various types of satellite data. The system allows seamless exchange of data in recognised data formats.


WAVESCAN buoy

The SEAWATCH WAVESCAN buoy (usually referred to as the WAVESCAN buoy) is a versatile instrumentation platform that may be used in all applications. It has been designed to provide less drag and large buoyancy making it well suited for deep offshore locations or areas of strong current forces. The buoy’s hull design is based on the dynamic response and stability requirements from comprehensive wave tank testing.

The WAVESCAN buoy is a multi-parameter buoy that can be used to collect directional wave data as well as meteorological, oceanographic and water quality parameters. The buoy also has innovative “wells” for sensor mounting, easing service and maintenance.

Features:

· The ideal buoy for deep water and severe current conditions.

· A unique design optimizes wave direction measurements.

· Multi-parameter platform for client’s chosen selection of sensors.

· Modular shaped hull for easier transport and local assembly.

· Real-time data transfer and presentation.

· Full onboard processing of all measured data.

· Two-way communication link for data transfer and control of a number of buoys.

· Special mooring design minimizes mooring influence on buoy motions.

· Successful track record worldwide since 1985.

More information may be found in the datasheet.


SEAWATCH buoy

The SEAWATCH buoy is a stable instrumentation platform that is particularly well suited for current and wind measurements. It has less buoyancy than the WAVESCAN but may also be moored in deep water using a correctly designed rig.

The SEAWATCH buoy is a multi-parameter buoy that can be used to collect directional wave data as well as meteorological, oceanographic and water quality parameters. The buoy also has innovative “wells” for sensor mounting, easing service and maintenance.

Features:

· A very stable buoy ideal for accurate metocean data collection.

· A unique design optimizes wave direction measurements.

· Multi-parameter platform for client’s chosen selection of sensors.

· Modular shaped hull for easier transport and local assembly.

· Real-time data transfer and presentation.

· Full onboard processing of all measured data.

· Two-way communication link for data transfer and control of a number of buoys.

· Special mooring design minimizes mooring influence on buoy motions.

· Successful track record worldwide since 1985.

More information may be found in the datasheet.


SEAWATCH MINI ll buoy

The SEAWATCH MINI ll buoy is a small buoy designed for coastal applications but it can also measure directional waves further offshore. It is well suited as a wave measurement buoy but can also be fitted with a certain number of metocean and water quality sensors.

Features:

· Small and easy to transport.

· Ideal for directional wave measurements.

· Insensitive to spinning and rough handling.

· Real-time data transfer and presentation.

· Full onboard processing of all measured data.

· Two-way communication link for data transfer and control of a number of buoys.

· Special mooring design minimizes mooring influence on buoy motions.

More information may be found in the datasheet.


SEAWATCH Deep Sea Module

The modular design of the OCEANOR SEAWATCH system allows the integration of additional modules into existing buoy based systems that are based on the OCEANOR SEAWATCH technology. One such module is the SEAWATCH Deep Sea Module (SDSM).

The SDSM is a seabed observatory with acoustic communication. It is especially designed for tsunami surveillance. The SDSM comprises a high-resolution pressure sensor interfaced, via a processor, to a combined acoustic modem / release. The processor reads pressure data and transmits it, together with temperature and battery voltage, acoustically to the surface WAVESCAN buoy; onboard alkaline batteries supply its power. The equipment is mounted on a frame, anchored by concrete, with floatation spheres that enable it to be retrieved by issuing a release command to the acoustic modem / release and waiting for it to surface.

Features:

· Continuous monitoring of water pressure on the seabed

· System verification

· Software analyses data for tsunami events

· Fast data transmission mode in case of a likely tsunami event

· Onward transmission to shore via satellite

· Two-way communications to allow interrogation of the SDSM from the surface to obtain recent pressure data or to change it to continuous mode.

· Export of data for evaluation by expert team in conjunction with seismic data and other sources of information.

More information may be found in the datasheet.


OCEANOR WaveSense sensor

OCEANOR's buoys now contain internally developed WaveSense sensor, a solid-state low-power integrated wave sensor and datalogger. The WaveSense features many advantages including

  • low power consumption

  • small size and light weight

  • not sensitive to rapid rotation or low temperatures

 


OPTISENS

Multiple colour optical sensor for algae and underwater particle detection

  • Measures transmittance for 3 wavelengths
  • Smooth shape to prevent marine growth
  • User friendly re-calibration
  • Easy maintenance
  • Titanium container

OPTISENS is an electronic optical sensor with no moving parts specially developed to measure light transmittance for different wavelengths in water. The sensor is based on the principle that particle and organic matter have different light transmittance with respect to wavelength. The wavelengths of the light beams are chosen to give the highest possible detection of light absorbing components in the sea; micro organisms, bacteria, yellow substance and suspended particles.

OPTISENS can identify the development of algal blooms and the spread of particle pollutants that pose a threat to the management and commercial exploitation of the marine environment.

The sensor can be mounted on marine structures, moorings, buoys or used as a profiling instrument.

  • Accurate and stable against shocks, temperature and pressure
  • Standard interface RS232
  • Low power consumption
  • Titanium container guarantees mechanical strength and non-corrosion
  • Excellent performance for characterization of water optical properties, including detection of phytoplankton cells.

 


 
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