Luxury motor yacht YAS (ex Swift 141) is an outstanding and impressive 141-metre vessel, based on the hull of a former navy frigate, and built by ADM Shipyards to a design by Pierrejean Design in 2011. One of the largest vessels ever constructed in composite, mega yacht YAS has recently undergone her first sea trials off the coast of the beautiful Abu Dhabi yacht charter location, nestled in the Middle East. She was spotted under sea trials in the video below, released by Shbz Media through Dailymotion.