AstralTwilight

Hi. First off thank you so much for keeping this mod up to date it means a ton to me. I do have an issue or question though. For whatever reason I can use the air park on airships but for any other vessels it doesn't give me the option. Notably I'd like to be able to use it on my boats but right clicking the part it doesn't show the park option and the toolbar doesn't provide it either. Is this a bug or by design?