GNSS960 RTK precision 25 miles Offshore

The Heavy Lift Vessel Svanen from Ballast Nedam successfully achieved the task to place 55 monopiles 25 nm Offshore Zeebrugge this North Sea Winter. The HVL Svanen relied on The Stema-Systems GNSS960 to achieve the strict vertical tolerances Read more

RheoTune for Three Gorges Dam

China Three Gorges Project Corporation acquired the RheoTune system to better manage the sediment accumulation in one of the world largest hydro power projects. Read more

Sonic 2022 fully up and running

The sonic 2022 realised the survey of the Nieuwe Waterweg, access to the Port of Rotterdam, within planning and budget and within the strict tolerances. The 35 km waterway is now play-ground of all currently available Sonic systems. Read more

Silas useful in pollution isolation project

The European water directive instructs ecological restoration of the watersystem. A new strategy is pollution isolation by applying a sand cover. The Silas Seismic profiling tool proved to be a practical nondescructive way to assess capping thickness. Read more

First R2Sonic surveyresults for Rijkswaterstaat

R2Sonic 2024 first deployment on Rijkwaterstaat surveycontract on the Nieuwe Waterweg is a succes. Read more

Intelliwinch delivered to Van Oord

The first Intelliwinch system has been delivered to Van Oord. The system will be deployed on the maintenance works in IJmuiden, The Netherlands, in combination with the DensiTune for in-situ density measurements. Read more

Stema Systems launches new automated winch system

Intelliwinch - a fully automated winch system designed for sound velocity, OBS, DensiTune, RheoTune or any other third party probe or instrument. Read more

RheoTune

RheoTune Fluid Mud Rheometry Probe for nautical depth assessment Read more

The compact 5th generation multibeam

The fifth generation multibeam combines high precision with compact dimensions. Optimal portability and ease of operation. Read more

Octans Surface gyrocompass and motion sensor

OCTANS, with Ethernet output, is an IMO certified survey grade gyrocompass and complete motion sensor. It is based on IXSEA’s FOG technology, which outputs true heading, roll, pitch, surge, sway, heave, speed, acceleration and rate of turn. Read more

Automated winch system

Fully automated, computer controlled winch system. Suitable for deploying sound velocity probes, OBS, side scan sonar, Tune system and many other instruments. Read more

SILAS EBP-10, versatile echosounder/subbottom profiler

SILAS EBP-10, lightweight, versatile & fully digital echosounder and subbottom profiler system Read more