About: http://webisa.webdatacommons.org/277448051

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	In the first place, there was a limit to the number of shipyards capable of building them and the number of ports able to receive them.
http://www.w3.org/ns/prov#wasQuotedFrom	oceansatlas.org