120-meter+ Project 'Thunder' Emerges At Lurssen German custom superyacht manufacturer Lurssen launched another large superyacht this morning at their facilities. This time it is the 120-meter (plus) superyacht known under the build name; Project 'Thunder'. Her exact length is not known but Lurssen commented that the craft is above 120-meters. Many sites that she may well be in the region of 135-meters but Lurssen has yet to confirm that. Another facet that has been swirling around is that she was designed by Espen Oeino and the yard has confirmed that in their press release.