What is a datagram ?

Datagram is a prediction. Unlike the routing, which is a route prediction, in datagrams the route is set and gives the direct line between two points (boat, WP, route WP). We are going to focus on the data evolution along this direct route. We will get the following data evolution prediction: TWD, TWA, TWS, Currents, Sailect, Water level, transit time, travel time.