What are the disadvantages of point-by-point sounding?

Point-by-point sounding refers to a method of collecting depth measurements at specific points, which can lead to a lack of detailed information about the underwater features in between those points. This method captures only individual data points rather than providing a continuous profile of the seafloor, which can result in insufficient information for interpreting the overall terrain, particularly in complex environments such as those with varying underwater topographies.

If detail about the seabed is critical for tasks like navigation, dredging, or habitat assessment, relying solely on point-by-point measurements could omit significant features or changes in depth that exist between the recorded points. This can impact the effectiveness of the survey, especially when making decisions based on the data. Hence, stating that point-by-point sounding lacks detail accurately highlights its primary disadvantage.