Bathymetric & Hydrographic Survey by Coratia Technologies

Underwater robotics service

Bathymetric & Hydrographic Survey

A bathymetric survey measures underwater depth and bed shape, while a hydrographic survey combines depth, positioning, shoreline, and related waterway data for navigation, engineering, capacity, and maintenance decisions.

Overview

How the service supports asset decisions

Coratia combines sonar, positioning, and autonomous or remotely operated survey platforms to collect underwater terrain data. Survey scope can support reservoir capacity and siltation studies, dredging planning, bridge scour assessment, port maintenance, waterbody monitoring, and marine construction decisions.

Typical applications

  • Reservoir capacity, sedimentation, and storage assessment
  • River, lake, and canal bed profiling
  • Port, harbor, and navigational depth surveys
  • Dredging, bridge scour, and marine construction planning

Method

Inspection and survey workflow

  1. 01

    Survey design

    Set coverage, line spacing, reference system, accuracy requirements, and site constraints.

  2. 02

    Field acquisition

    Collect depth and position data with suitable sonar and robotic or crewed survey platforms.

  3. 03

    Quality control

    Review coverage, sensor checks, positioning, outliers, and environmental corrections.

  4. 04

    Data products

    Process observations into maps, profiles, surfaces, volumes, and an engineering-ready report.

Outputs

Typical deliverables

  • Bathymetric maps, contours, and depth profiles
  • Digital terrain or bed-surface models
  • Cross-sections and volume calculations where scoped
  • Survey methodology, coverage, and limitations report

Platforms

Related robotic systems

Navya ASV

Direct answers

Frequently asked questions

What is the difference between bathymetry and hydrography?

Bathymetry focuses on underwater depth and terrain. Hydrography is broader and may include positioning, shoreline, tides or water levels, hazards, and other data needed for navigation and engineering.

Can a survey estimate reservoir siltation?

Yes. A current bed model can be compared with design records or earlier surveys to assess sediment distribution and changes in storage, subject to the quality of the reference data.

Which sonar is used for bathymetric surveying?

The sensor depends on depth, coverage, accuracy, terrain, and water conditions. Single-beam and multibeam echo sounders are common options, selected during survey design.

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