Surveyors should be careful to understand your situation and to calibrate the echo sounder. Often, it can be tricky to ascertain the actual bottom because of the existence of a column of soft mud near the sea mattress. A twin frequency echo sounder will help in this example to find out the actual bottom. Once again, high turbidity within the water

Photographs obtained beneath the Preliminary attempts at MBES bottom imaging have been under stellar, but Fortuitously advancements were forthcoming.The coastal spot of Bangladesh is quite shallow and indented in nature. Lots of the inshore locations are inaccessible by survey vessel due to presence of very low tide elevation locations and shallow