NLTides - HP33D (English)

The nautical software program NLTides – HP33D  provides digital information on tidal heights and streams along the Dutch coast and adjacent areas.

It provides:

  • official tidal height predictions for all significant ports, from Nieuwpoort in Belgium to List in Germany;
  • 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 available through agents

NLTides is an annual edition that provides tidal predictions which are valid for 1 calendar year. NLTides can be used on 2 PCs. This software is available through the agents of the Hydrographic Service. With the NLTides 2022 edition, you can make tidal predictions for the period of 1 November 2021 to 31 December 2022. With NLTides 2023, you can make tidal predictions for the period of 1 November 2022 to 31 December 2023.

Installation and frequently asked questions

In the documents below you will find answers to frequently asked questions about the nautical software NLTides.