About: http://webisa.webdatacommons.org/214393595

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	Shingle, bars of iron, gravel, or other material placed in the hold of a ship to regulate her trim and stability.
http://www.w3.org/ns/prov#wasQuotedFrom	sailingnavies.com