Firstly, ensure that you are in the Admin view.
Go to the main menu > Vessels > Vessel List.
Then follow the line that the vessel is on and click on the Edit pencil icon.
Here is a quick video: How to edit a vessel
Review the information recorded below and edit as necessary.
Then click the SAVE CHANGES button to save the changes made.
If you wish to add an engine, you can do so by editing the field Number Of Engines and change that number accordingly.
And after clicking SAVE CHANGES, it will then allow you to ADD ENGINE in the section below (scroll down in the Edit section to the bottom to view).
If you are adding an engine that is the same as one of the existing engines on the vessel, go to the USE EXISTING ENGINE tab and select the engine accordingly.
If you are adding a new engine, go to the CREATE NEW ENGINE tab and fill in engine details accordingly.
Then click the ADD ENGINE button to save the new engine.