...You can pan and zoom in the usual ways, and skip back and forward in time using the timeline at the bottom of the screen. The controls at the top right let you show and hide different map layers, port names, the background map, routes (a plot of all recorded vessel positions), and the animated ships view. There are also controls for filtering and colouring by vessel type. The merchant fleet is divided into five categories, each of which has a filter and a CO2 and freight counter for the hour shown on the clock.