Partial and multiple coherence spectral analysis was performed on accelerometer data, recorded on a U.S. Navy surface ship. A total of 48 accelerometers were mounted at predetermined locations on the ship, and vibration data were recorded on a 14-channel instrumentation tape recorder. The data were recorded in four groups, each consisting of twelve pickups. Taking groups of four pickups at a time with high pairwise coherences, a four-channel analog-to-digital converter and minicomputer were used to digitize and process the data. Partial and multiple coherence spectral analysis was performed on the digitized data. The analysis was found to be very useful in identifying major sources of structure-borne noise at various frequencies. Also the analysis was helpful in identifying major noise paths. The analysis was performed at the David W. Taylor Naval Ship Research and Development Center at Annapolis, MD, under the Surface Ship Silencing Program.