Geophysical Hydrography

Positioning

About Positioning


We at Stema Systems know that having the most accurate data at the hands of the projects is vital for the efficiency. Therefore we have developed a positioning system that will enable the user to conduct surveys and other maritime analysis to the highest degree of accuracy, using the latest GNSS technology incorporated into a Stema unit that is unique in the market.

Stema Systems has seen these systems used in a number of applications, such as but not limited to multi-beam surveys, positioning of Wind turbine foundations, the co-development of a cable touch downs system to mention but a few.

The Stema Dredge Positioning System (DPS) is a highly versatile positioning system built up around the Stema GNSS-982PoE receiver. With its […]

Stema GNSS982-PoE

P-160 Subsea PoE tilt sensor
Range tilt -80/+80. Stainless steel housing with steel baseplate. 3x M18x1,5 openings for PoE in, out and optional external sensor

PR-6060 Subsea PoE roll pitch sensor
Range pitch/roll -30/+30. Stainless steel housing with steel baseplate. 3x M18x1,5 openings for PoE in, out and optional external sensor

RheoTune for Three Gorges Dam

China Yangtze Three Gorges Project (TGP), as one of the biggest hydropower-complex project in the world, ranks as the key […]

Silas useful in pollution isolation project

The Kralingse Plas is situated near to Rotterdam, The Netherlands, town centre. The lake has an important recreational function. Nevertheless […]

Silas – EBP-10 tackles mud survey problem

Van Oord, a world leading dredging contractor, is frontrunner in maintenance dredging works with their water injection dredging techniques. Natural […]

The Survey-machine–quick start, fast survey

“The Survey-machine – quick start, fast survey”: introducing the Fast Surveyboat 7.50 with fully calibrated survey equipment. DutchWorkboats and Stema […]