Copyright & Disclaimer
Tidal Data retrieved from www.worldtides.info. Copyright (c) 2010-2015 Oregon State University. Licensed for individual spatial coordinates only via ModEM-Geophysics Inc. NO GUARANTEES ARE MADE ABOUT THE CORRECTNESS OF THIS TIDAL DATA. You may not use this data if anyone or anything could come to harm as a result of using it (e.g. for navigational purposes). The tidal predictions are based on a non-authoritative static model and they do not consider current weather conditions. The accuracy of the global model in shallow (e.g. coastal waters) is limited. Heights are referenced to Mean Sea Level (MSL) and not to the chart datum.
Just select the date, the number of days and move the map to where you want the prediction. When Start Date and the Number of Days are changed the tide prediction will refresh. When the map is moved more than 20km the map will also refresh.