When you are in the map view press the anchor button. Choose Lists from the pop-up screen. Click Create new to start the search for ports. Enter a name for your new list.
When you have named your new list you can start adding ports. You can either search for them individually by entering the name, part of a name, or country, of a port in the search field, or you can click on the funnel on the right to get three options.
You can add several filters by pressing save after each choice.
In this example you know have a list of ports in Belgium where LPG ships are calling. When you have chosen your filters, you add ports to your list by clicking on them. When your list is complete you click done. You will then see the list you have just made. If you find that you need to make any changes to your list, you can edit or add ports, or delete the list to start over. Or if you want to view your list in the map, click find in map. You also have the same choices directly from your overview of your lists.