Seafloor Systems, Inc., founded in 1999 by Navy Veteran John Tamplin, is known for its innovative application of hydro acoustic sonar and unmanned marine surface vehicle technology to the survey industry. Seafloor developed the original Hydrolite-TM echosounder system in 2005 to meet the needs of the US Army Dive Teams. The Hydrolite was designed specifically to integrate to a customer’s existing GNSS survey kit and data collector, bringing hydrographic survey technology to the Land Surveyor. With interfaces to Trimble ACCESS and SCS9000, Leica VIVA and Captivate, Topcon MAGNET, and Carlson SurvCE, the Hydrolite covers most, if not all, of the most used survey data collection software packages in use today.

In 2010, Seafloor introduced the HyDrone remotely controlled Unmanned Surface Vehicle to the market. This allowed Seafloor to pioneer the current trend of using USVs for deployment of survey equipment in hazardous and inaccessible areas, including rivers, lakes, canals, mines, and harbors.

In 2014 Seafloor introduced the EchoBoat, a 1.8m mono-hull USV capable of deploying a multibeam echosounder remotely, complete with an inertial position and orientation system and sound velocity sensor. Integrated to the vehicle is a powerful industrial PC capable of collecting data from all survey sensors, cameras, and environmental systems as well as enabling the User to remotely connect to the vehicle over RF telemetry to monitor and control the data acquisition process.

In 2015, Seafloor introduced their industry disrupting AutoNav auto pilot module for the HyDrone and EchoBoat vehicles. The AutoNav product now makes it possible for the user to pre-plan a survey mission, upload it to the vehicle, and have the vehicle carry out the survey autonomously. Once the survey is completed, the vehicle automatically returns to the launch point for ease of recovery.

Seafloor continues to innovate in the survey grade echosounder and unmanned surface vehicle sectors, having introduced the first hot-swappable transducer well technology for the EchoBoat in 2017, which enables the user to quickly swap sonar modules without removing the vehicle from the water. Modules include a multibeam echosounder with integrated IMU, sidescan sonar, single beam echosounder, ADCP, and subbottom profiler. With proven technology and proven solutions as well as unparalleled Customer Service, Seafloor is the go to supplier for portable, rugged, and quality hydrographic survey instrumentation.

ASV’s / USV's


The EchoBoat-ASV™ is a portable, autonomously controlled survey platform developed for hydrographic survey applications. The multi-payload vehicle features portability, improved thrust, and large payload capacity. It is manufactured from high quality marine materials and components and easily disassembles for transport and shipping.

Work environments include mines, sewage treatment plants, rivers, contaminated lakes, ponds, and harbors.

Top Speed: 5 kn
Hull Length: 1.8m
Hull Width: 0.8m
Power: 12 - 24 VAC
Battery Endurance: Up to 8 hrs
Payload: 65lbs/29kg
Motor: 2x brushless thrusters
Hull Material: UV resistant HDPE
Empty Hull Weight: 36lbs/23kg
Hardware: stainless steel
Remote Control: RCU 2.4GHz omni directional antenna
Remote Range: 2 km, remote antenna Omni Directional
GPS: customer specified RTK/GNSS, DGPS
Echosounder: multibeam, dual frequency, singlebeam, ADCP, side scan sonar
Auxiliary: SVS, SVP, CTD, WiFi remote desktop


The HyDrone-ASV is a one-man portable, autonomous and remotely controlled catamaran platform developed for hydrographic survey applications. Working in conjunction with the HydroLite-TM portable echosounder kit, the HyDrone accomplishes the same results as more expensive RC survey systems. The lightweight, wide profile, and watertight construction provide stability, ruggedness and portability. It is manufactured from high quality marine materials and components and easily disassembles for transport and shipping.

Work environments include mines, sewage treatment plants, contaminated lakes, harbors and rivers.

Top Speed: 1kn
Hull Length: 116cm / 45 in
Hull Width: 73cm / 29 in
Power: 2x 14.8v 16 Ah battery LiPo
Battery Endurance: 8 hours
Payload: 35lbs/15kg
ECU: 2x 120 amp
Motor: 2x brushless thruster
Hull Material: UV resistant HDPE
Frame: aluminum powder coated
Steering: Differential
Weight: 9.8 kg / 25 lbs
Hardware: stainless steel
Remote Control: RCU 2.4Ghz long range
Remote Range: 2 km
Hatches: 4x 7" twist-out water-tight closure
GPS: all brands
Echosounder: Seafloor HydroLite™-, HydroLite-DFX


The HydroCat-180 is a USV capable of transiting from inshore out to offshore environments whilst carrying high-resolution payloads to conduct full autonomous hydrographic surveys.

The HydroCat-180 is an 18-ft (6 m) catamaran, with individually articulated hulls, a gimballed deck, and dual-actuated electric motors. Additionally, the vessel can be transported via trailer, has a retractable sonar mount, SVP winch, and is capable of operating autonomously.

Length: 18 ft (approx. 6 m)
Width: 8 ft (approx. 2.5 m)
Overall Height: 9 ft (3 m)
Endurance: 4-8 hours
Payload: 700 lbs
Propulsion: Dual Electric Boards
Cruise Speed: 3 kn
Max Speed: 10 kn

Wifi Data Communication System
Onboard Industrial PC
Individually Articulated Hulls
Gimballed Deck
Remote Controlled Sonar Mounting
Pole with Locking Piston
2 batteries (+ 2 spares)
2 10HP Torqueedo Motors
Nav Aids (Strobe, Nav Lights, Day Shapes)

Payload options:
Single or Dual Head Ultra-High Resolution Multibeam
180 HD Video Camera
Sound Velocity Profiling Winch
Merlin LIDAR
Sub Bottom Profiler

Contact us

Saderet Limited
Unit C1
Eden Business Park
Cooil Road
Isle of Man

Tel.: +44 (0)1624 880366

Registered in the Isle of Man 120826C
VAT Reg. No. 003 1066 44

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