JTides is an advanced, accurate, easy-to-use tide and current prediction program. JTides predicts tides and currents using a large database of US and worldwide locations. It graphs its predictions in many useful ways. In comparison tests, JTides' predictions are in good to excellent agreement with a sampling of published and on-line tide tables.Also, because JTides contain data for so many sites (over 2000 in the default configuration), you can obtain tidal forecasts for places where there are no printed tables available. And if you want, you can print a calendar of tidal events from JTides' calendar display.JTides is a Java MDI (Multi-Document Interface) application -- this means many locations can be graphed at the same time. You may also print prediction charts or export application-portable databases of any size, or create a Web-publishable HTML page set of tidal predictions.