claim: We know the Northwest Passage had been open before."
evidences.evidence_id: Northwest Passage:167
evidences.article: Northwest Passage
evidences.evidence: The only usable route linking the entrances of Lancaster Sound and Dolphin and Union Strait was discovered by John Rae in 1854.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO
evidences.evidence_id: Northwest Passage:29
evidences.article: Northwest Passage
evidences.evidence: On August 21, 2007, the Northwest Passage became open to ships without the need of an icebreaker.
evidences.votes: SUPPORTS SUPPORTS NOT_ENOUGH_INFO
evidences.evidence_id: Northwest Passage:356
evidences.article: Northwest Passage
evidences.evidence: On September 14, 2007, the European Space Agency stated that ice loss that year had opened up the historically impassable passage, setting a new low of ice cover as seen in satellite measurements which went back to 1978.
evidences.votes: SUPPORTS NOT_ENOUGH_INFO NOT_ENOUGH_INFO
evidences.evidence_id: Northwest Passage:4
evidences.article: Northwest Passage
evidences.evidence: An ice-bound northern route was discovered in 1850 by the Irish explorer Robert McClure; it was through a more southerly opening in an area explored by the Scotsman John Rae in 1854 that Norwegian Roald Amundsen made the first complete passage in 1903–1906.
evidences.votes: SUPPORTS NOT_ENOUGH_INFO NOT_ENOUGH_INFO
evidences.evidence_id: Northwest Passage:95
evidences.article: Northwest Passage
evidences.evidence: In 1602, George Weymouth became the first European to explore what would later be called Hudson Strait when he sailed Discovery 300 nautical miles (560 km) into the Strait.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO NOT_ENOUGH_INFO