MBES Survey Total Time Calculator
Calculate the total time a survey will take given using a traditional (single-swath) MBES. You must enter the swath width, size of the survey area, average depth and speed of…
New Beamwidth after Frequency Change
Calculates the resultant along-track and across-track beamwidths of a multibeam echosounder at a specific frequency using the known beamwidths at a specific reference frequency. Sonar Settings: Enter the Beamwidths of…
Video – The History and Importance of Hydrography by Charles Brennan
Surveying has been called the second oldest profession in the world. However, at some point before angles were taken, someone stuck a stick in the water to determine how deep…
Yaw Patch Test – Lines in Opposite Directions??
It is written in stone, somewhere in the ancient library of Multibeam Surveys, that Yaw Patch Test Lines MUST be in the same direction. The results are shown below: Yaw…
Seconds & Time Converters
This tool converts a seconds-since-midnight value from the beginning of the current day or the beginning of the GPS Week and vice-versa. HYPACK HSX file observations are seconds-since-midnight of the…
Roll Patch Test Line Spacing – Tilted Head
This calculator has been superseded by a new page (link below) that calculates Line Spacing for all three Patch Tests when using a tilted head. https://mosaichydro.com/mbes-patch-test-tilted-head-line-spacing-calculator/
Hits per Grid Cell Calculator
This tool calculates the number of sonar hits (beams or soundings) in a user-specified square grid cell based on Swath Width, Sonar Range, Sonar Altitude, Speed of Advance, and Ping…
