Can you survey a river or reservoir without a boat or entering the water?

Yes. We deploy the CHC Navigation Apache 4 — an unmanned surface vessel that captures accurate bathymetric data remotely from the riverbank or reservoir edge without requiring personnel to enter the water. The Apache 4 is fitted with dual GNSS, IMU integration and single or multibeam echo sounders. It navigates the survey route autonomously and streams data in real time. This approach is significantly safer than manned boat surveys on fast-moving or shallow watercourses, and is suitable for rivers, reservoirs, canals, lakes and coastal environments where vessel access is difficult or unsafe.