At BCO-DMO, the ocean research cruise and the dataset are the doorways to geospatial interlinking.

Cruise Geospatial Data

From the BCO-DMO website, a list of all cruises can be obtained at: http://www.bco-dmo.org/cruises. To retrieve RDF representations on a cruise, resolve the cruise URL with one of the following additions:

1. "Accept: application/rdf+xml" header 
2. adding '.rdf' on to the end of the cruise URL (i.e. http://www.bco-dmo.org/deployment/57956.rdf)

Geospatial metadata can also be retrieved from the SPARQL endpoint: http://lod.bco-dmo.org/sparql

PREFIX odo: <http://ocean-data.org/schema/>
PREFIX geosparql: <http://www.opengis.net/ont/geosparql#>

SELECT ?cruise ?wkt
WHERE {
  ?cruise rdf:type odo:Cruise .
  ?cruise geosparql:hasGeometry ?geom .
  ?geom geosparql:asWKT ?wkt .
}

Dataset Geospatial Data

Currently, the only way to retrieve dataset geospatial data is to download the data. Datasets can be discovered from two interfaces: 

1. BCO-DMO Website (http://www.bco-dmo.org/datasets)
2. Mapserver Interface (http://mapservice.bco-dmo.org/mapserver/maps-ol/index.php)

Future Improvements

1. Associate Cruise tracks to Geonames terms (http://www.geonames.org)
2. Fully implement the Trajectory Ontology Design Pattern (http://schema.ocean-data.org/ol-patterns/dev/trajectory.owl) for annotating individual Cruise lat/lon points (Fixes) as well as dataset points of interests (Segments). This ontology is currently in development as part of the OceanLink project.