78-meter Custom Yacht Announced By Amels Amels is set to start work on building a new custom superyacht. The 78-meter luxury yacht will be their largest vessel (By gross tonnage) at around 2,850GT. Of course the largest yacht (length wise) Amels has built so far is the 83.5-meter "Here Comes The Sun" but she doesn't quite match the GT of the new 78-meter custom. Also something else different about the custom superyacht is the designer. Amels will be working with Espen Oeino on the exterior design which is something very different from what they have been doing with the Limited Editions line of yachts designed by Tim Heywood.