Hydrographic images of the zero (initial) state of the underwater construction site

Before starting the construction of any major subsea construction site, it is important to take a zero-state survey to precisely define the terrain before any excavation or construction activity. This is important for very simple reasons: the recordings from the project documentation are often inadequate or outdated, so it is difficult for the contractor to prove the quantities of excavation and embankment later. Also, the creation of detailed implementation projects that are done immediately before implementation will be based on current, real and precise data. By recording the zero state of the seabed with a high-resolution multi-beam depth gauge and creating a precise 3D model of the sea or river bottom, these problems were solved and all participants (investor, designer,