Hydrographic surveyors rely on sophisticated software and sensor systems to collect accurate underwater data, but what happens when that system has an undetected error? This course teaches professionals how to find errors that automated systems miss.

You will learn the principles behind independent verification, the practice of manual depth measurement using lead lines, and develop critical thinking skills to evaluate whether your survey software is producing results you can trust. Real-world examples ground every concept in field practice.

Whether you work in dredging, navigation, or coastal engineering, this course gives you the tools to sign your name to a survey with confidence.