Between November 2007 and February 2008 the first calculation method for PROTIDE is developed. It is released in a prototype version via http://protide.chartasoftware.com/.
PROTIDE should have a probabilistic calculation method to calculate tidal window advices. This method is based on the probability a given ship, with a given load, that travels with a course and speed under certain circumstances hits the channel bottom. By combining statistics on this input and simulating around the variance a method is designed that can calculate this probability at any time and location. Comparing this with a cut off criterion results in a list of safe "time location intervals". The final step is finding a route through these intervals to create a safe route and with it a safe tidal window advice.