Tersus TheDuck (USV)

Q: What warranty and support do you offer?

Every product comes with a 12-month warranty covering manufacturing defects under normal use. During the warranty, we provide repairs or replacement of faulty parts, as well as technical support . After the warranty period, we continue to offer repair, servicing, and parts support. Our UK repair centre handles original parts and full testing.

Q: Can I get a demonstration, training or customized solution?

Yes - we offer product demonstrations (in person or virtually), webinars, and one-on-one training to help you get up to speed. We also custom-configure or adapt solutions (e.g. integrating sensors, payloads, alternate configurations) to suit your specific project needs.

Tersus GNSS TheDuck™ USV — Versatile Small USV for Precise Bathymetric Surveys

Compact & Precise Bathymetric Surveying – TheDuck™ delivers high-accuracy single or multi-beam echo sounding with advanced GNSS positioning, ideal for lakes, rivers, and coastal surveys.
Smart, Safe & Easy to Operate – Features an M-shaped hull, dual ducted propellers, long-range control (up to 2 km), and auto-return for effortless one-person operation and maximum safety.
Customisable Professional Platform – Supports Tersus GNSS receivers (OSCAR, LUKA, DAVID30-TAP) and modular sensor upgrades for scalable hydrographic, environmental, and engineering applications.

Model: TheDuck

TheDuck
Pro + ES200 Single Beam Echo Sounder
Pro + ES300 MultiBeam Echo Sounder
Plus

Product variants

Scroll Down To See Package Comparison

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Product Info

Tersus GNSS TheDuck™ USV — Versatile Small USV for Precise Bathymetric Surveys

Compact & Precise Bathymetric Surveying – TheDuck™ delivers high-accuracy single or multi-beam echo sounding with advanced GNSS positioning, ideal for lakes, rivers, and coastal surveys.

Smart, Safe & Easy to Operate – Features an M-shaped hull, dual ducted propellers, long-range control (up to 2 km), and auto-return for effortless one-person operation and maximum safety.

Customisable Professional Platform – Supports Tersus GNSS receivers (OSCAR, LUKA, DAVID30-TAP) and modular sensor upgrades for scalable hydrographic, environmental, and engineering applications.

Experience exceptional versatility with TheDuck™, a compact unmanned surface vehicle designed for accurate bathymetric surveys on lakes, inland rivers, reservoirs, and coastal areas. Its lightweight, strong M-shaped hull, combined with advanced GNSS and echo sounding technology, makes TheDuck™ a reliable choice for hydrographic professionals. Contact us to learn more today!

Key Features

Includes - TheDuck™ USV (selected variant), Android-based remote controller, Dual lithium battery packs, Basic software and training, Full technical support from Tersus & AlphaGeo.

Maximise TheDuck™'s potential by equipping it with the Oscar/Oscar-TAP/Luka GNSS receiver, unlocking a wider range of applications. Equipped with the Oscar-TAP GNSS receiver and implementing the PPP function, TheDuck™ delivers high performance even in areas with no or very poor network coverage.

Enhanced Safety & Design - Two plug-in metal ducted propellers reduce entanglement risk with fishing nets, aquatic plants, and surface debris, enhancing operational safety.
Lightweight, strong, and stable M-shaped hull made from polymer PP alloy ensures optimal performance in various environments.
TheDuck™ floats and depth fixes ensure buoyancy and accurate depth measurements for dependable survey results.

Effortless One-Person Operation. Simplify your workflow with TheDuck™'s intuitive design that supports one-man operation — from transport, installation, and operation to efficient data collection.Seamless Data Transmission & Control. Dual omnidirectional 2.4GHz RF antennas enable long-range, stable data transmission up to 2 km. Auto-return function activates automatically in case of signal loss for safety and asset protection.

Delivery

Free UK Delivery is available on all orders over £100.

Orders under £100 have a fixed delivery price of £8.

Delivery takes around 4-5 weeks to most UK addresses, except for in stock items, as below.

In-Stock Items Only - Delivery will be made in 2-3 working days. Next Day Delivery is also available to UK mainland addresses for £30 per order, order By 12pm, Mon to Fri to receive next day.

Conditions - Some locations outside mainland UK may incur additional charges, which are representative of the extra cost that we get charged by the courier. Delivery is available to Europe and some Worldwide locations. Contact us directly on sales@alphageouk.com if you need any help or have questions, before you order.

Product Specifications

Specification	Details
TheDuck™ Single Beam	Built-in single-beam echo sounder Frequency options: 455 kHz (up to 100 m) or 200 kHz (up to 300 m) Ideal for shallow to mid-depth hydrographic surveys
TheDuck™ Pro Multi Beam	Advanced multi-beam echo sounder for high-resolution seabed mapping Enhanced data density and accuracy for complex underwater terrain Suitable for professional-grade hydrographic and environmental projects

See it in Action

AlphaGeo

Why Choose AlphaGeo?

At AlphaGeo, we partner with the world’s leading manufacturers to bring you the highest-quality ROVs, commercial drones, UAVs, robotics, survey equipment, and advanced drone payloads — all designed for precision, performance, and reliability. As an official UK reseller, we combine global innovation with local expertise, offering competitive pricing, expert support, and fast delivery. Our dedicated team of industry specialists is always on hand to help you find the right solution for your mission - whether you’re exploring underwater, mapping from above, or conducting critical survey operations.

FAQs

Please read our FAQs page to find out more.

What does each product package include?

Each listing clearly states what’s included in the box (e.g. main unit, batteries, charger, cables, software license, spare parts, accessories). If you’re unsure, check the “Package Comparison” section of the product page or contact us for confirmation before purchase.

How long does delivery take, and when will my order ship?

UK Standard Products: 4-5 weeks
In Stock products: 2-3 business days
Orders placed before 2 pm (weekdays) are dispatched the same day when in stock.
Free UK delivery is available for orders over £100.

What warranty and support do you offer?

Every product comes with a 12-month warranty covering manufacturing defects under normal use.
During the warranty, we provide repairs or replacement of faulty parts, as well as technical support.
After the warranty period, we continue to offer repair, servicing, and parts support.
Our UK repair centre handles original parts and full testing.

Can I get a demonstration, training or customized solution?

Yes - we offer product demonstrations (in person or virtually), webinars, and one-on-one training to help you get up to speed. We also custom-configure or adapt solutions (e.g. integrating sensors, payloads, alternate configurations) to suit your specific project needs.