A result of the inhomogeneous mixing of clean and salt waters, the sound velocity profile is strange which impacts the calibration and effectiveness of this products noticeably. Once again, because of turbidity, ideal swath protection just isn't normally attainable because the beams are concentrated toward the centre. The standard of https://hydrographic-survey-in-dh73848.eedblog.com/32538184/the-best-side-of-hydrographic-survey-in-bangladesh