NLTides - HP33D (English)
The nautical software program NLTides – HP33D provides digital information on tidal heights and streams along the Dutch coast. More information on this program and zip file is available below the download.
It provides:
- official tidal height predictions for all significant ports, from Cadzand to Delfzijl;
- tidal streams for the Southern North Sea, Wadden Sea, Scheldt river estuary, tidal river areas and main port approaches.
NLTides is equivalent to the paper HP33, but contains more ports. You may replace HP33 by NLTides, provided that you have appropriate back-up arrangements. NLTides is an annual edition that provides tidal predictions which are valid for one calendar year. With NLTides 2025, you can make tidal predictions for the period of 1 November 2024 to 31 December 2025.
See the website of the port of Rotterdam for more information about the weather and tide of the Port of Rotterdam.
System requirements
- Windows 10, 11
- Disk space 60 MB
Term of use
This product is free to download. Use of the product for any purpose is subject to the following conditions:
- Commercial use of the product is prohibited, with the exception of activities for which the Hydrographic Service has granted explicit permission. This means that you may not, for example, generate a substantial income directly or indirectly from the product provided. This also applies to the provision of this product to others free of charge in a manner damaging to the commercial interests of others.
- You are not permitted to make the product available to others without explicit prior consent from the Hydrographic Service.
- You must delete the product if you no longer need it.