In the "Voyages & Port Calls" section of the vessel drawer you will find the most import information about a vessel and its voyages.
The "Vessel Details" section shows data about the vessel such as DWT summer/tropical and immersion. Click Expandto show contact information for the vessel.
This is a list of voyages on the opened vessel, sorted by newest first. If there is an ongoing voyage (end date in the future) in the list, it is indicated with a blue marker on the left side.
Clicking on the voyages will list all port calls of the voyage below. Clicking on port calls in the list opens them in a panel where you can make changes.