The testing was meant to validate the ship's ability to operate in rough seas. German engineers expressed concern that the ship's knife-like hull could lead it to flounder or even capsize. The guided missile destroyer USS Zumwalt recently passed a pair of Rough-Water Trial tests, in which it faced bracing winds, waves, and other intense conditions. Engineers from the Carderock and Philadelphia Divisions of the Naval Surface Warfare Centers (NSWC) executed the trials to evaluate the ship's seakeeping and structural performance. Navy engineers came away from the tests, which involved sailing the ship directly into two storms with waves up to 20 feet high, satisfied that the