Quite surprisingly, the model with the highest specification of 0.5°x1° beam widths has become the most popular model, making up about 50% of the units sold.
The extremely narrow transmit beam of 0.5° is a feature that results in very high resolution of the survey results, and is required for detection of objects according to IHO S-44 special order. Many users are waiting for the dual swath functionality, in order to have the full system performance of their EM 710. This functionality is expected to be distributed from May 2008 and will include new and more powerful boards for signal processing.
Typical EM710 multibeam echosounder results.