Widen, improve and spread knowledge of hydrography and maintain relations between persons, companies and institutions.

Educational Fund

Stimulate hydrographical knowledge, by presenting an award for the best thesis and by supporting educational institutions.

Corporate members

Corporate members are entitled to all kind of extras, e.g. 2 subscriptions to Hydro International and a platform to introduce themselves.


27 May 2021

Invitation 4-part Webinar series "Sustainability in the dredging sector"

Platform Baggernet - June 1 to July 1, 2021 - online (via Microsoft Teams)

The government wants to release 300 million euros annually to reduce greenhouse gas emissions. According to the Climate Agreement, these emissions must have decreased by 95% by 2050 compared to 1990. Sand extraction and dredging together provide one of the larger material flows that are considered in this context. How do we tackle these processes as efficiently as possible and how do we ensure sustainable choices in the dredging and sand extraction sector?

In a series of four Webinars, we follow how the dredging sector is working on sustainability. The entire chain is covered:

  • the question of whether dredging should be carried out 
  • via the question of how dredging and sand extraction can be done in the most sustainable way 
  • to the question of where the dredging can be used sustainably or transported to.


The Baggernet platform would like to welcome you digitally to exchange ideas on this (see the attachment for more information):

Tuesday 1 June from 3:00 pm - 4:30 pm: Sustainability in the dredging sector - opportunities and obstacles *

Thursday 24 June from 3:00 pm - 4:30 pm: Innovations in coastline management - De Zandwindmolen **

Friday 25 June from 11 a.m. - 12.30 p.m.: Sustainable dredging equipment & biofuels **

Thursday 1 July from 11 a.m. - 12.30 p.m.: 'Is dredging always the most sustainable option?' **

* You can register for the webinar on 1 June via this link to Symposium Soil Breed. You pay an entrance fee for this webinar, which also gives you access to other parts of the Soil Breed symposium, including various sessions about PFAS.

** Platform Baggernet organizes the webinars on 24 and 25 June and 1 July entirely in-house. These can be attended free of charge. You can sign up here.



Monique Kielliger

Secretariat Baggernet

11 Nov 2020

Announcement FIG e-Working Week 2021

Join the FIG e-Working Week!

We are excited to announce that the FIG Working Week 2021 will be a virtual conference for all surveyors and spatial professionals around the globe.

With the current COVID-19 developments, we are forced to explore other ways to come together and find different ways to organize meetings: we have now made the decisions that the Working Week 2021 will be an e-Working Week - in other words a virtual conference. 

We promise FIG e-Working Week 2021 will: 

- inspire & connect 

- be a global event 

- provide an attractive virtual programme

- bring qualitative good sessions

- provide an opportunity to exchange knowledge

- provide an opportunity to network & socialize bring different professional groups together

The theme for FIG Working Week 2021 will be the same as for this year's Working Week: 

Smart Surveyors for Land and Water Management 

Challenges in a New Reality

with an addition to also to reflect on the impact of COVID-19 on our profession. During the FIG Working Week 2021 besides the subthemes Smart Surveyors, Integrated Land and Water Management and Ten Years to Achieve the SDG’s, we want to focus on the surveyor and the challenges they have in a unstable, uncertain, unpredictable world and with what technology, methods and procedures they face these new developments. How do surveyors adapt to these unexpected circumstances and what have we learned so far from these challenges? 

With Smart Surveyor for Land and Water Management we stand still by the knowledge of the Dutch. Over almost 200 years of experience with mapping and more than 100 years of land consolidation, mapping and surveying are almost basic activities within the Netherlands to support the management of land and water. Apart from being known for its tulips, wind mills and clogs, with its almost 42,000 square km the Netherlands is one of the most surveyed area in the world. Every square meter is mapped, registered and documents and it has to be, being densely populated, with more than 55% of the total country below sea level and being the second exporter of agricultural goods in the world. 

Stay tuned...

19 May 2020

Update about upcoming workshops

Valued HSB member,

First of all, the board hopes that everyone of us is (and remains!) healthy and that the Corona virus has not struck in family and / or circle of acquaintances.

The current and continuing rules on COVID-19, including social distancing, the uncertainty of how long this will remain necessary and the awareness that many of our regular participants in the HSB meetings belong to a risk group make it difficult to establish a clear planning for an GA / Workshop. While two months ago we still hoped about the end of June - around World Hydrography Day - to be able to close the period before the holiday period with a GA and workshop, things are now different.

In view of the above, the board has unanimously decided that no GA / Workshop will be planned prior to the coming holiday period and that we will continue to keep an eye on whether the situation after the summer recess will make it possible for an HSB meeting. to plan.

We live in an uncertain situation and planning mainly depends on the further developments of the corona infection in the Netherlands and Belgium and the decisions to be taken by the authorities in the coming months and also our own responsibility towards our members.

We will inform you in time about the planning after the holiday period.

A board member put forward the following idea: “Invite the members to make a short general (anonymous) report of how things are going in this COVID-19 time with work and general. Let's merge that into a document and distribute it. The aim is to strengthen the feeling of togetherness and it gives a picture of how we are influenced by the situation”.

In short, take the “pen” and give shape to this idea.

The board wishes you all good health in the coming months! Keep all of you square and stay out of the infirmary!

Kind regards,

Leeke van der Poel

Chairman of the Hydrographic Society Benelux

17 Mar 2020

GA and Workshop postponed due to COVID-19


Dear HSB member,

It will not surprise you: in accordance with the advice of RIVM, the General Assembly of Members (GA), which was scheduled for April 3, 2020, will be postponed. Naturally, the workshop and the presentation of final papers of students, traditionally prior to the GA, is also postponed.

A new date for the GA depends on a number of factors, the most important of which are the course of the COVID-19 virus infection and government measures.

The Corona virus disrupts the planning of many things, such as booking options for meeting locations, but also other events such as the FIG “working week” in Amsterdam (10-14 May 2020). As a board, we also consider it important that nominated students can present their thesis on time and that the winner can be a candidate for IFHS student award.

For the time being, the board is focusing on a workshop and GA at the end of May 2020 at KIVI in The Hague.

You will be informed of the details in time.

It goes without saying that the HSB will conform to the recommendations of RIVM, whereby an extra safety margin will be taken for your and other people's health.

Leeke van der Poel

Chairman of the Hydrographic Society Benelux

7 Feb 2020

Announcement Hydro20

The next Hydro conference will be organized by our French sister association AFHy. The Hydro20 will be held from 8 to 10 December 2020 in Monaco.

1 Nov 2019

SMARTSEA workshop, November 8 in Utrecht

Workshop SMARTSEA: sand wave results as inspiration for current practice and future research

In an interactive setting, the highlights of this NWO-research project will be presented and discussed.

SMARTSEA is about the modeling, data analysis and risk-based interpretation of sand wave dynamics.

Our goal is to link the results to current engineering practice and to develop joint ideas for future research.

The workshop is open to anyone with an interest in seabed morphodynamics.

  • Date: Friday 8 November, 2019
  • Time: 12:00-16:00
  • Place: Utrecht, The Netherlands (exact location and program will follow)

To subscribe, please send an e-mail to

6 Sep 2019

IFHS Student Award winners for 2018 and 2019 announced

Last month, in the run-up to World Hydrography Day (WHD) 2019, the International Federation of Hydrographic Societies (IFHS) announced the winners of its prestigious Student Award for 2018 and 2019.

Newly appointed Chairman, Eric Langlois, presented Hamza Mazih and Christopher Haddon with their £1,500 (GBP) prizes and commemorative certificates at an evening ceremony in Marseille, France, on Monday 17th June.

Hamza, who was nominated by the Francophone Hydrographic Society (AFHy), won the 2018 award for his paper entitled Implementation of a protocol for acquisition and processing of strapdown gravity data from airborne inertial navigation system to compute geoid models in coastal areas. Hamza, who graduated the MSc Hydrography at ENSTA Bretagne in France last autumn, is now employed by Fugro.

Christopher's 2019 award-winning paper provided Insights into embayment-scale sediment dynamics using MBES multispectral backscatter at Perranporth, UK. Nominated by The Hydrographic Society UK, Chris received the honour just days after completing his BSc (Hons) Ocean Exploration & Surveying at the University of Plymouth, UK. He is due to start work with MMT in the coming weeks.

Earlier the same day, Hamza and Chris both presented their research work to an international audience attending an IFHS one-day hydrography workshop, which formed part of the world-renowned Oceans 19 conference in Marseille. The workshop programme also addressed topical matters such as survey standards, crowdsourced bathymetry, data rescue, capacity building, hydrographic education and individual certification.

6 Sep 2019

IHO Conference April 2020

Dear corporate member,

An IHO conference will be held in Monaco from 21-24 April 2020, including delegations from all Member States and observers from various neighboring organizations.

In the conference building, the industry is given the opportunity to present itself with a stand.

For more details, I refer you to the appendix of the International Hydrographic Organization (IHO): IHO Exhibitor Info

6 Sep 2019

Invitation: SIKB Annual Congress 2019

+31 Just call the Netherlands ......, that is the theme for the SIKB annual conference 2019. Under the leadership of SIKB board member Jeroen Haan, by that time dyke count of the Hoogheemraadschap De Stichtse Rijnlanden, the knowledge and expertise of Dutch soil and subsurface management and archeology, in an (inter) national context. What can we learn from our approach elsewhere in the world, and what can we learn from elsewhere? The ambition is there:

"+31 - Call the Netherlands". With speakers such as Marck Haerkens who offers inspiration from aviation and Ad van Wijk who takes a look at the (underground) energy landscape in 2031. With debates between, for example, professor John van den Hof and professor Daan Raemaekers about the knowledge and competences that the soil and archeology professionals are asked. With sixteen different parallel sessions. With a Blunder- and Glunderbak and a closing drink at the SIKBar: what is your vision for 2031?

Click here for the program booklet with more information about the conference and the sharing sessions. You can sign up here.

We look forward to meeting you on Thursday 26 September in the 1931 convention center in 's-Hertogenbosch.

3 Aug 2019

Workshop "GNSS for new precision applications"

On Friday, June 14, 2019, the GNSS Symposium for new precision applications was organized at the Technical University in Delft. Around 110 interested people attended the event organized by the Netherlands Institute for Navigation (NIN), Geo-Information Netherlands (GIN) and the Hydrographic Society Benelux (HSB).

Almost everything one does is location related and GNSS help us to determine where that is. Precision and reliability are increasingly required. New hardware and software developments for mass markets make more and more possible in this: small and affordable, yet also advanced GNSS chips and antennas, which offer almost the same observations and quality as geodetic GNSS receivers, make a massive deployment for new applications possible. Seven speakers from different disciplines discussed this during the symposium.

Small is beautiful

Chris Lowet, Product Manager at Septentrio NV in Leuven, Belgium, spoke first about the newly developed GNSS module for mass applications, called "Mosaic". Despite its small size (3x3 cm) and low power consumption, this module can use all available GNSS signals and arrive at a centimeter-accurate position determination. The "Mosaic" can be used in, among other things, self-driving robots and cars, drones and agricultural machines. The module distinguishes itself on the market by working well even with many obstacles and the anti-interference and jamming technology that Septentrio is known for.

New player on the RTK market

The second speaker, Tommy van der Heijden, founder of MarXact, presented the UNI-GR1 universal RTK GNSS receiver. This receiver is assembled in the Netherlands and supports all modern GNSS signals. The GNSS board comes from the Chinese supplier Unicore. With the help of UNI-Cloud, UNI-RTK premium and various APIs, this is a ready-made, open receiver that communicates with many software packages.

Automatic and affordable geo-monitoring

Jürgen Alberding, director of Alberding GmbH from Wildau in Germany, took the audience to the new world of automated geo-monitoring. Alberding offers tailor-made services for deformation measurements of, among other things, soil and engineering structures. Components include Web-based server software and integrated GNSS and telemetry sensors. The GNSS sensors are low-cost modules that can collect both code and phase observations.

"Crowd Sourced Bathymetry"

After the coffee break, Chief of Hydrography and Captain of the Sea Marc van der Donck of the Ministry of Defense picked up the thread firmly. He showed those present that the seabed is clearly the worst part of the earth. It is striking that this applies especially to the shallower areas at sea. Under the slogan "Map the Gaps" a campaign has been launched to close the gaps in the sea charts. By collaborating and sharing data from many other parties who perform depth measurements at sea, such as survey companies, fishing vessels and cruise ships, the aim is to speed up the measurement process.

Customized GNSS in developing countries

The fifth speaker, Ernst Peter Oosterbroek, Senior Land Administration Advisor at Kadaster International, spoke about the need for good land registration in poor countries. Security of ownership is a basic condition for a growing economy. In various countries in Africa, South America and Asia, Kadaster International helps with projects for acquisition and registration of property. A combination of aerial photos and affordable GNSS makes this possible.

Farmers measure Water

A completely different deployment of new GNSS was proposed by Jouke Velstra, director of Acacia Water BV, in Gouda. Together with LTO Noord, water boards, provinces and farmers, Acacia Water strives to realize a joint monitoring network for surface water and groundwater and soil water.

Salinisation along the coast is, partly due to subsidence, rising sea levels and periods of major drought, an increasing problem in agriculture. Farmers and water boards should work together in this and an extensive monitoring network is essential for making the right decisions.

Use of GNSS in Drones

Finally, Pieter Franken from Terradrone Europe (formerly Skeye BV) gave a presentation about the importance of GNSS in the worldwide deployment of drones for measurements and inspections. Applications of GNSS range from the automatic flying of flight patterns, measuring of pass and check points, precise location of recordings to the replacement of expensive IMU equipment (inertial navigation). Pieter emphasized that only a combination of technology and geodetic knowledge leads to reliable results.

After the symposium, all speakers were thanked with a Delft blue storm umbrella developed at TU Delft and they were able to talk afterwards during a drink offered by the associations.

The symposium was organized on behalf of the VPN GIN / NIN Working Group by:

Sandra Verhagen, TU Delft ; Hans Visser, Fugro ; Lennard Huisman, GRC / Geopinie ; 
Jean-Paul Henry, 06-GPS