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Product Survey > AUVs (September 2009) > ECA

ECA

  08/02/2012
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Brand ECA
Product Alister
Vehicle type AUV
Total number of AUVs built 3
Commercial options Payload Suite
Weight of AUV in air (kg) 980
Maximum payload (kg) 200
Freight weight  
Dimensions (l x w x h) (m) 4.9 x 0.7
Maximum depth rating (m) 300
Number of thrusters: directional/lateral control 2
Hover capabilities (Y/N) N
Minimum turning radius (m) 15
Type of launch & recovery system (LARS) used, how the AUV is recovered Crane and Catamaran
Average speed; maximum speed (knots) 4/8
AUV crew size 3
Number of surface computers required for operation 2
Storage space requirements (size) One 20' container
Other requirements  
Standard navigation sensors FO Gyro, DVL, DGPS
Optional navigation sensors  
If an INS is installed, navigation sensors used to update position during a dive DVL
Standard payload sensors SSS, MBES, SBP, SBES, video camera, OAS
Optional payload sensors Synthetic Aperture Sensor
Total energy content of battery (kWh) 21
Nominal battery power (W)  
Endurance at nominal power (hours) 18
Battery modules can be swapped (Y/N) Y
Recharge time from empty (hours) 5
Acoustic telemetry is fitted (Y/N); baud rate (bits per second) Y/20 to 10,000
Radio telemetry is fitted (Y/N); baud rate (bits per second) Y
Ethernet connection for update; maximum speed Y
Type of data sent to the surface Vehicle and ssensors parameters, sensor images
Control parameters sent to the AUV Mission changes, stop
Emergency recovery procedure in the event of a total system failure  
Current AUV applications Survey, Hydrography, Oceanography, Homeland Security, Minewarfare
Further information  



     


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Hydrographic Survey of Riverbed Erosion

Members of the US Geological Survey were filmed while out on the Missouri River at Williston, North Dakota, USA, performing a hydrographic survey to monitor the state of riverbed erosion. They were using a multibeam echo sounder which transmits sound energy and analyses the return signal (echo) that has bounced off the riverbed or other objects. Multibeam sonars emit sound waves from directly beneath a ship's hull to produce fan-shaped coverage of the riverbed. 


Gauge height at the Williston gauge was approximately 27.65 feet when this video was taken. Additional information about the USGS streamgauge at Williston is available at http://waterdata.usgs.gov/nd/nwis?program=nwisman&site_no=06330000

 

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