Off-shore wind measurements made easy

Off-shore  wind  industry  needs  accurate  and  affordable  wind  measurements  to  support  project  development.   
Current  industry  standards  require  the  use  of  masts  and  cup  anemometers   to  provide  wind  data  according  to IEC 61400  requirements.   In  parallel  remote  sensing  equipment  like  LIDAR’s  or  SODAR’s  are  capable  of  providing  wind  data  over  the  height  of  modern  turbines.

SeaLIDAR  combines  both  for  the  benefit  of  the  wind  industry.

A  purpose  designed  and  built  floating platform  incorporates  both  mast  and  LIDAR  to  provide  wind  data   and  all  other  data  -wave,  temperatures  etc-  required  for the  development of  an off-shore  wind  park.   Data  meet  all  the  requirements  of  the  current  industry  standards  i.e.  IEC61400   offering  to  the  user  the  necessary  certainty  needed  for  this  range  of  projects.  
The  platform  can  be  deployed  in  both  shallow  or  deep  waters  using  minimum  of  infrastructure.      

Sea Lidar

How does it work?

seaLIDAR is a purpose designed and built floating platform incorporating both wind mast and LIDAR. Other instrumentation is available depending on the data needed by the client.

seaLIDAR has been designed to virtually eliminate the movements induced by the waves.  In this way the wind mast meets all the specifications needed by the current industry standards and LIDAR measurements need no correlation.  Operation data collected during real operation in the sea show tilt and azimuth variations of less than 0.7°  well below the 2° required by IEC61400.
Because of this there is no need to correlate the measurements of seaLIDAR against a fixed mast and seaLIDAR wind data are bankable.  





All seaLIDAR parts and equipment are placed in a standard 40’  container.  



seaLIDAR can be assembled by the shore in an area of 10 x 10 meters with the help of a  standard 5 tons crane and a crew of 4 trained people in about 7 hours.



seaLIDAR can be launched in the sea with the help of a standard 5 tons crane or using a standard slope of at least 6 meters width used for boats.  Water depth of 0,7 meters is enough for the launching.



Mooring of seaLIDAR can be done using a standard 150HP boat.



seaLIDAR uses a hybrid anchoring based on TLP and catenary methods. 
Although various options are available gravity anchors is the standard option.  A  40tons boat equipped with a 10 tons crane is needed.



After anchoring, set-up and instrumentation start-up is a matter of 2 hours by a crew of 4 people. No need for underwater works.

  has been deployed and tested at a site 2.5 km of the shore of Thermaikos gulf, Macedonia Greece, at a sea depth of 10m.

The processed, recorded, wind data are presented in Figures 1 to 3.

Recordings [Fig. 4, Fig. 5] show that the inclination of the mast, by the wave induced movement of the  , is compliant with IEC's 61400 acceptable deviation from the vertical direction (±2°). Based on this, wind data  recorded are fully compliant with industry standards and need no correlation.


Vertical Wind Shear Profile

Figure 1. Vertical Wind Shear Profile.

Frequency of Horizontal Speed vs Direction at 100m

Figure 2. Frequency of Wind Speed vs Wind Direction at a Height of 100 m.


10 minutes mean Wind Speed at 10 m (Wind Mast)

Figure 3. 10 minutes Mean WindSpeed at 10 m height (Wind Mast).

seaLIDAR's 10 minutes Maximum and Minimum values of Roll

Figure 4. 10 minutes Maximum and Minimum values of Roll.

seaLIDAR's 10 minutes Maximum and Minimum values of Pitch

Figure 5. 10 minutes Maximum and Minimum values of Pitch.

seaLIDAR1 "The new development"


seaLIDAR1 has been developed base on the acquired experience of .

spent more than 5 months in sea during its deployments.

seaLIDAR1 is able to perform full wind measurements with minimum maintenance intervention.




5 m    
5 m
Height   11.7 m
  (wind mast not included)
Weight   12 tn   (wind mast and equipment not included)

Power Supply

Power System Autonomy   apr. 15 days   (more upon request)
Solar Panels        
Lead-acid battery bank       (other upon request)
Wind Turbine       (depending on local weather conditions)
Onboard Generator      

Wind Measuring Equipment

Wind Mast Height   Max 20 m   (other upon request)
LIDAR System to be used   Zephir 300   (other upon request)

Other Equipment

Navigation Lights   Led based    
Temperature Sensor        
Humidity Sensor  
Atmospheric Pressure Sensor        
Inertia Sensors   Real Time data presentation    
Wave Sensors       (upon request)


Cellular   3G   other upon request

Operational/ Deployment Conditions

Deployment Water Depth   min 15 m     
Operational Water Depth   up to 100 m   (more upon request)
Max Wind Speed   30 m/sec  
Max Wave Height   5 m   (more upon request)


Who we are

 has been developed by ESTIA Consulting & Engineering S.A. ( ). Experienced Engineers from various disciplines (naval, mechanical, electrical etc.) have been worked to realize seaLIDAR. Aristotle University of Thessaloniki -Greece- helped in several aspects regarding theoretical implementations.

  is promoted by seaLIDAR Ltd, a UK based company, dedicated in further development & commercialisation of seaLIDAR. Intellectual property rights concerning various features of seaLIDAR are pending.







seaLIDAR1: "The new development"


Please come in touch with us to learn more about or to express your interest in our platform.

seaLIDAR Ltd
40 Gracechurch Street, Iplan
London EC3V 0BT, UK
Tel : +44 (0)20 7118 2388                 
Mobile : +44 (0)75 0261 6806                 
Email :


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