A jaw-dropping 480-foot superyacht that can be submerged in water and boasts an open-air tennis court has set sail after a three-year conversion. The …<div><a href="https://nypost.com/2022/02/07/jaw-dropping-480-foot-superyacht-that-can-be-submerged-in-water-sets-sail/?utm_source=flipboard&amp;utm_medium=syndicated&amp;utm_campaign=partnerfeed" target="_blank">Original link</a></div><div>Original author: Crowson,</div>