About: http://webisa.webdatacommons.org/250192406

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Add four 40 mm. mounts topside on U.S.S. MIDDLETOWN. The mounts weigh 28 tons each, including structure, and their center of gravity is located 48 feet above the keel and 29 feet to starboard of the centerline.
http://www.w3.org/ns/prov#wasQuotedFrom	maritime.org