Our Team​​​

Photograph of Capt. Marc van der Donck  

​Captain RNLN M.C.J. (Marc) van der Donck ​

IC-ENC Chairman

Marc was commissioned as an officer in the Netherlands Navy after attending the Royal Netherlands Naval Academy in 1982. Over a long and varied naval career he has occupied numerous roles including the command of HNLMS vessels and an appointment at NATO. Currently he is the Chief Hydrographer of the Royal Netherlands Navy and Director of the Netherlands Hydrographic Office and was elected as Chairman of IC-ENC in September 2016.​

​Marc's role is to represent the interests of the IC-ENC Members in IC-ENC strategic and operational aspects, Chair the annual IC-ENC Steering Committee, and to provide a 'Chairman's Recommendation' during any inter-sessional Steering Committee decisions or votes. For these reasons, he is actively engaged with the IC-ENC General Manager on a continual basis.​​​

                                       email Marc

Photograph of Vice Chair  

Jens Peter Hartmann​

IC-ENC Vice Chairman

Jens Peter Hartmann is Senior Advisor at the Danish Geodata Agency which also contains the Danish Hydrographic Office. He is the agency's primary contact and coordinator for marine activities and is involved in the implementation of a Danish Marine Spatial Data Infrastructure and Marin Spatial Planning. 

He is Chairman of the IHO Marine Spatial Data Infrastructure Working Group (MSDIWG) and Chairman of the Baltic Sea Marine Spatial Data Infrastructure Working Group (BSMSDIWG) under the Baltic Sea Hydrographic Commission (BSHC). 
He is also external associate professor at Copenhagen Business School.

Jens Peter has been Head of the Danish Hydrographic Office and had served as Head of the Maritime Inspectorate at the Danish Maritime Administration. 
He has also served as chairman for a working group under the BSHC that addresses the harmonisation of ENCs in the Baltic region. 

Jens Peter is educated as a naval officer in the Royal Danish Navy and has worked as a master mariner in the commercial fleet and as a commercial pilot. Jens Peter holds degrees in organisation and strategy from the Copenhagen Business School.​

ens Peter supports the IC-ENC Chairman on strategic management issues and will bring his considerable knowledge and experience to bear on IC-ENC strategic issues.​

Photograph of James Harper  

James Harper

General Manager

James completed a Geography degree before beginning work as a cartographer for the UK Ministry of Defence. He joined IC-ENC in 2005, working initially in the Data Validation team and then progressing on to ENC quality and validation policy roles. After two years working on the UKHO's Royal Navy work programme from a finance and management perspective, he was appointed as IC-ENC General Manager in 2011.​

James works closely with the IC-ENC Chairman on strategic and political issues and is the primary point of contact for existing and prospective member hydrographic organizations. He is responsible for IC-ENC's finances and governance.


Sam Winchester

Distribution Manager

Sam joined the UKHO in 2014, working for the senior Defence management team, where he gained a broad understanding of the maritime world and how navigation products and services contribute to both national Navies and the commercial shipping world.

He moved to the Defence Distribution department and was responsible for the distribution of UKHO data - all aspects of data licencing, both commercial vessels and Defence products & services directly to the Royal Navy. He has worked with senior Officers to ensure vessels are fully compliant before deployment and to understand the new ways in which data helps to fulfil mission directives. In early 2016, Sam transferred to a more commercial role, increasing his knowledge of the commercial maritime environment, usage of data and licencing models. ​

Photograph of Mike Hawes 

    Mike Haw​es

     Data Manager

     Mike is a long term member of IC-ENC team with years of practical ENC validation expertise. He routinely works with        IC-ENC members to resolve data issues and manages the UK based IC-ENC validation team of five. All ENC                    datasets received in IC-ENC UK are passed through Mike and his validation team.


​IC-ENC Validation Team

​The IC-ENC Validation Team consists of 8 Data Validators located across four offices. Dan Garratt, IC-ENC Senior Data Validator, leads the team.

UK: Alison Vale, Max Summers, Laura Tyzack and Aaran Champion

Australia: David Durston​

Latin America: Bruna Pinheiro and Ana Mileze

North Americ
a: Jenny Thacker and Robert Ciepiela

The IC-ENC Validation Team are trained in the use of role specific validation tools and the analysis of their output. They collectively hold years of dedicated ENC validation knowledge which is enhanced with role specific training and backed up by cartographic experience and understanding. Using ENC specific validatio​n tools and multiple ECDIS systems, the teams comprehensively validate all new ENC cells and updates.  


    Postal Address​

    You can contact IC-ENC by post at:

    International Centre for ENCs
    Admiralty Way,
    TA1 2DN
    United Kingdom