SEMASO is founded in 2016 as a sister company of the renowned Dutch company Wiertsema & Partners BV and Marine Sampling Holland BV (specialized in geotechnical investigations, laboratory analysis and geotechnical consultation) and in close cooperation with Ravensrodd Consultants Ltd (finding solutions to fine cohesive sediment problems).

The HQ of SEMASO is situated in Tolbert in the Netherlands. The team of SEMASO consists of a number of experts, often the inventers of our generic Sediment Management Systems, and has acquired a network of experts within this field.