This mod adds a whole new aircraft carrier around boom island. No you cannot drive it and no it is not a wrecked carrier.
"To install mods at all, you need to open up steam, then find Just Cause 3 in your list of games. Right-click it and click settings. Now click "Set launch options" and a new window will open up. Copy this:
--vfs-fs dropzone --vfs-archive patch_win64 --vfs-archive archives_win64 --vfs-fs .
and paste it in there, then click "Done" to save it.
Now go to this filepath: Steam-folder> steamapps> common> Just Cause 3
Now create a new folder called Dropzone and you are done with setting things up.
Now copy the editor and settings folder from the download into your dropzone folder"