About: http://webisa.webdatacommons.org/23950673

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	My sighting was ashore, I do not know about the others, but there is a suggestion that it is a shore-only flag.
http://www.w3.org/ns/prov#wasQuotedFrom	crwflags.com