How do I modify the captains of a vessel?

The vessel's captains can be modified, deleted, and added using the Entities tab of the navigation. Here are the steps:

1. Open the navigate bar and click Entities under the Manage section.
2. Given the entity type of vessel is selected, click the Edit icon of the vessel you would like to modify.
3. Select the Contacts tab on the left side of the dialog that appears.
4. From here you can edit, delete, or create new captains.