About: http://webisa.webdatacommons.org/360204534

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	Once they are finished with a mission, or if there is a malfunction, they float to the surface and are easily located by GPS to be hauled onto the boat and back to the shore.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.co.nz