Scanning color imaging sonar Applications:

? ROV, AUV and UUV ? Offshore Oil & Gas ? Sunken Timber recovery ? Profiling ? Diving support ? Surveying ? Search & Recovery ? Inspection ? Underwater Archaeology ? Scientific research The 881a incorporates latest technological advances allowing multi-frequency capabilities from one compact digital sonar head. Imagenex Windows 95, 98, NT compatible software controls, display, and records data from the 881a digital sonar head.
Sonar Image plotted on a laptop screen using the sonar head on a 3 meter sector scan of a sign at 1 MHz: Inset Photo of sign. Sonar Image plotted on a laptop screen using the sonar head with the Rov on a 4 meter sector scan of an anchor chain laying on the seabed. The shackles can been seen. (chain shackle 90 mm)

Specifications:

Frequency: Tuneable. Three default settings of 310 kHz, 675 kHz and 1 MHz. Other frequencies can be selected through programmable software configurations. Beam Width: 310 kHz, 4° x 40°, 675 kHz, 1,8° x 20° and 1 MHz, 0,9° x 10° 1 Mhz 0,9 x 1.4° beam in profiling mode. Transducer: Fluid filled protective transducer housing. 360° continuous rotating. Polar mode, sector mode, single side scan and profiling mode. Power supply: 20-36 VDC at less then 5 watt. Interface: RS-485 at 115,2 Kbaud or optional RS-232 Cable length: 1000 m on typical twisted shielded pair Operating depth: 1000 m and 3000 m available. Connector: side mounted four conductor wet mateable connector. Dimensions: 79,4 mm diameter x 233 mm length. Weight: 1,5 kg in air and 0,6 kg in water HOEKEINDE 5 ? 4254 LM SLEEUWIJK ? THE NETHERLANDS ? TEL. 31-183-307900 FAX 307910 www.seascape.nl ? info@seascape.nl 2