What is a USV?

A USV (Uncrewed Surface Vessel) is a small survey boat that operates without a crew onboard. Instead of carrying people, it is controlled remotely from the shore or from a support vessel.

A USV can carry hydrographic survey equipment such as a Multibeam Echo Sounder, Single Beam Echo Sounder, Side Scan Sonar, ADCP, and GNSS receiver. While the boat moves along planned survey lines, it collects depth, position, and seabed data automatically.

Because there is no crew onboard, USVs improve safety and allow surveys to be completed in areas where larger survey vessels cannot operate.

Why is a USV Important?

Some survey locations are too shallow, too narrow, or too dangerous for traditional survey vessels.

A USV allows surveyors to collect accurate hydrographic data while keeping people away from hazardous conditions. It also reduces operating costs, saves fuel, and makes surveys more efficient.

Many organizations now use USVs for routine hydrographic surveys because they provide reliable results with less effort.

How Does a USV Work?

Before the survey begins, the survey route is planned using hydrographic survey software.

The USV is launched into the water and controlled remotely using a wireless communication system.

As the vessel follows the planned route, onboard sensors continuously collect depth, position, heading, and motion data.

The survey data is transmitted in real time to the survey team, where it is monitored and recorded for processing.

Main Components of a USV

A professional hydrographic USV may include:

• Multibeam Echo Sounder
• Single Beam Echo Sounder
• Side Scan Sonar
• GNSS Receiver
• GNSS Antenna
• Motion Sensor (MRU or INS)
• Heading Sensor
• Sound Velocity Sensor
• Survey Computer
• Communication System
• Electric Motors
• Batteries
• Remote Control Station

Each component works together to collect accurate hydrographic survey data.

Where is a USV Used?

USVs are commonly used for:

• Hydrographic Surveys
• Bathymetric Surveys
• River Surveys
• Lake Surveys
• Reservoir Surveys
• Port Surveys
• Harbour Surveys
• Dredging Surveys
• Coastal Engineering
• Environmental Monitoring
• Dam Inspections
• Offshore Support Surveys

Advantages of a USV

A USV improves safety because no crew is required onboard. It can work in shallow water where larger vessels cannot operate. It also reduces survey costs, saves time, and collects accurate hydrographic data using modern survey equipment.

USV vs Traditional Survey Vessel

A traditional survey vessel carries surveyors onboard and is suitable for large offshore projects.

A USV is remotely operated and is ideal for shallow water, confined areas, and locations where safety is a concern.

Both platforms can carry hydrographic survey equipment, but the choice depends on the project requirements.

Common Applications

USVs are commonly used for:

• Seabed Mapping
• River Surveys
• Dredging Monitoring
• Port Maintenance
• Dam Surveys
• Pipeline Route Surveys
• Environmental Surveys
• Coastal Mapping
• Emergency Surveys
• Marine Construction Projects

Frequently Asked Questions

Can a USV work without a person onboard?

Yes. A USV is designed to operate without carrying people. It is controlled remotely from a safe location.

Can a USV carry a Multibeam Echo Sounder?

Yes. Many professional USVs are designed to carry Multibeam Echo Sounders, Single Beam Echo Sounders, Side Scan Sonars, and other hydrographic survey sensors.

Is a USV suitable for shallow water?

Yes. One of the biggest advantages of a USV is its ability to work safely in shallow water where larger survey vessels cannot operate.

How is a USV controlled?

Most USVs are controlled using a remote control system and onboard navigation software. Some models can also follow pre-planned survey routes automatically while the operator monitors the mission.

Conclusion

A USV is changing the way hydrographic surveys are carried out. It allows survey teams to collect accurate depth and seabed data without placing people onboard the vessel. Its ability to work in shallow, narrow, and challenging environments makes it an important tool for modern hydrographic surveying.