In modern multibeam echo sounders, what is the typical swath width range?

In modern multibeam echo sounders, the typical swath width range is generally between 130° to 150°. This range allows for efficient coverage of the seafloor, enabling the collection of high-resolution bathymetric data. A swath width of this magnitude is advantageous for surveying large areas quickly while maintaining sufficient detail, which is essential for applications such as navigation, habitat mapping, and archaeological investigations.

Multibeam systems utilize multiple beams emitted simultaneously, which creates a wide swath of soundings across the seafloor. The specified swath width offers a balance between coverage and accuracy. A wider swath can capture more area in a single pass, but it may also introduce complexities such as reduced vertical accuracy or increased uncertainty in shallow waters. Consequently, the 130° to 150° range is optimized for practical hydrographic surveying needs.

The other ranges provided in the options, such as those over 150°, could be theoretically possible under certain conditions, but they often compromise data quality or resolution, making them less suitable for standard hydrographic surveying practices.