Application for permission to conduct a maritime survey
Here you can read about how to apply for permission to carry out a hydrographic survey.
Application for permission to survey
Maritime surveying in Danish waters, including the waters around Faroe Islands and Greenland, must be conducted with permission from the Danish Geodata Agency (Geodatastyrelsen/GST) (§7 lov om stedbestemt information). This concerns maritime surveying performed by both commercial ships and private authorities. An application for permission to survey must also be submitted for the systematic surveying of wrecks.
It is not necessary to apply for permission relating to activities within harbours as this responsibility remains with the individual harbour authority. The Danish Geodata Agency also does not require an application for control surveys of harbour areas where the surveyed channel extends beyond the harbour. If a harbour authority requires that the survey data is included in navigational charts and publications, an application for permission to conduct a maritime survey and the data must be submitted to the Danish Geodata Agency for inspection and quality assurance. The subsequent release of the data depends on the Danish Geodata Agency’s release plan.
Permission from the Danish Geodata Agency does not include authorisation for geotechnical bottom investigations. For permission to conduct a geotechnical bottom investigation please Contact the Danish Energy Agency.
Foreign survey vessels
Foreign vessels should apply for permission in the same way as Danish vessels. This concerns maritime surveying performed by both commercial ships and private authorities.
For foreign state ships seeking permission to work in Danish, Faroese or Greenlandic waters, the application should be sent by the necessary diplomatic channels of the flag state to which the vessel is registered.
Conditions for surveying
A number of conditions must be met before, during and after survey work.
- Only the vessel(s) listed on the licence are permitted to survey. Updates concerning the vessel(s) used for surveying must be reported to the Danish Defence Operation Centre () with Cc. to the Danish Geodata Agency ().
- A copy of the survey licence must be kept on board all survey vessels at all times so that it can be presented to the Danish Navy if requested.
- Where necessary, navigational information must be provided to the Danish Maritime Authority for the production and update of Notices to Mariners ).
- If objects or depths are identified as dangerous to navigation and are less than the depth stated on the navigational chart, the Maritime Assistance Centre () and the Danish Geodata Agency () should be notified immediately.
- If suspicious unidentified objects, remnants of ammunition or unexploded ordnance (UXOs) are identified during the survey, work must immediately be put on hold and the Danish Defence Operation Centre () contacted immediately, cf. §14 in BEK 1351 of 29/11/2013 on sailing safety for construction work and other activities, etc. in Danish waters.
- The Danish Geodata Agency has the authority to inspect and control the survey at any time.
- The survey results must not be disclosed to anyone other than the client who ordered the survey task. If survey data is included in tender documents, or the alike, it must be endorsed that data cannot be disclosed to unauthorised persons. Survey results can only be used for the task specified in the application.
- Survey data must be submitted to the Danish Geodata Agency (§7 stk 2 Lov om stedbestemt information). The Danish Geodata Agency has the permission to use the received data and information free of charge. This use includes archiving and storing of the data for future use in navigational charts and publications.
Survey data must be delivered electronically as measured minimum depths and in a standard xyz format, together with a complete metadata list (describing the equipment used, calibration methods, etc.). For further information see “metadata template” - click here:
The data must be submitted to the Danish Geodata Agency within 3 months of survey completion.
Survey applications must be sent to the Danish Geodata Agency no later than 4 weeks before survey work is scheduled to start. The Danish Geodata Agency will endeavour to process the application as soon as possible.
What must the application contain?
The application for permission to perform maritime surveying must include the following information:
- Applicant: Company, department, address, post code, town, country, e-mail. Contact person with e-mail and telephone number.
- Client of survey: Company, department, address, post code, town, country. Contact person with e-mail and telephone number.
- Purpose of the survey.
- Location of the survey: Including a map with the exact location of the survey area and coordinate list given in geographical coordinates (degrees, minutes and decimal minutes) in WGS84.
- Date of survey: Start and end date.
- Vessel information: Type of vessel(s), vessel(s) name, nationality, call sign, IMO-No., MMSI-No. and ownership.
- Survey equipment: List of the type of survey equipment to be used (sonars, positioning systems, inertial systems, sound speed profilers, tide gauges, etc.)
- It must be stated within the application if a geotechnical bottom investigation is required together with or after the hydrographic survey (Permission for this is not provided by the Danish Geodata Agency, but is included as important information regarding case processing. For geotechnical bottom investigations please contact the Danish Energy Agency).
- If the planned survey work is within a cable or pipeline area, permission must be attained from the cable or pipeline owner and attached to the application as an appendix.
- A declaration should be included stating that the Danish Ministry of Industry, Business and Financial Affairs have granted permission to establish any necessary electronic positioning systems.
- A declaration should be included permitting that survey work can be inspected and controlled at any time by the Danish Geodata Agency.
- A declaration should be included stating that the survey result will not be disclosed to anyone else other than the client who ordered the survey task. If survey data is included in tender documents, or the alike, it should be endorsed that data cannot be disclosed to unauthorised persons. Survey results can only be used for the task specified in the Application.
- A declaration should be included stating that survey data will be submitted to the Danish Geodata Agency, and that the Danish Geodata Agency has the permission to use the received data and information free of charge. This use can include archiving and storing of the data for future use in navigational charts and publications.
Template for application for maritime survey – click here:
Where should the application be sent to?
The application should be sent directly to the Danish Geodata Agency:
(Alternatively, the application can be sent to the Danish Geodata Agency via mit.virk.dk. Upload to which, can be challenging if the application contains more than 2 appendices).
How do I send data and metadata to the Danish Geodata Agency?
The survey data and metadata should be sent to .
If the files are too large for e-mail, please contact Ina Breum Nielsen on: +45 7254 5258 or email .
If you have any questions, please contact Ina Breum Nielsen on: +45 7254 5258 or e-mail .