Original sentence: Butler-class escort vessel, was building at Boston Navy Yard, but was cancelled 5 September 1944 as World War II came to an end.USS Groves (DE-543), a John C
Edited sentence: Butler-class destroyer escort that was never completed.Groves was laid down at the Boston Navy Yard in Boston, Massachusetts.Her construction was cancelled on 5 September 1944 before she could be launched.Navsource Naval History: Photographic History of the U.Navy: Destroyer Escorts, Frigates, Littoral Warfare Vessels.USS Groves (DE-543) was a proposed World War II United States Navy John C