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| Ice melt raises passage tension | Ice melt raises passage tension |
| (about 3 hours later) | |
| In another sign of potential friction in the warming Arctic, Canada has warned that it will step up patrols of the Northwest Passage. | |
| Record summer melting of sea-ice has made the passage fully navigable; and immediately escalated a dispute over who controls the route. | |
| Canada maintains the waterway that connects the Atlantic with the Pacific lies within its territorial waters. | Canada maintains the waterway that connects the Atlantic with the Pacific lies within its territorial waters. |
| It has backed that up with plans for a new military base in the Arctic. | It has backed that up with plans for a new military base in the Arctic. |
| However, the United States, and other countries claim international rights to use the route for shipping. | However, the United States, and other countries claim international rights to use the route for shipping. |
| Big melt | Big melt |
| In an interview with BBC News, the head of the Canadian Coast Guard, George Da Pont, said: "Our view is that it's our territorial waters and that we govern it accordingly. Obviously the Americans and some European countries have different views. | In an interview with BBC News, the head of the Canadian Coast Guard, George Da Pont, said: "Our view is that it's our territorial waters and that we govern it accordingly. Obviously the Americans and some European countries have different views. |
| "I assume at some point in time they'll get settled but we're pretty confident that they're Canadian territorial waters and that we should be regulating and asserting our control over them as we would over any other part of our territorial water. | "I assume at some point in time they'll get settled but we're pretty confident that they're Canadian territorial waters and that we should be regulating and asserting our control over them as we would over any other part of our territorial water. |
| "It's critical, it's part of our history; like any country it's important to assert your control over your country and your territorial waters." | "It's critical, it's part of our history; like any country it's important to assert your control over your country and your territorial waters." |
| His statement comes as polar experts are still reeling from the dramatic loss of Arctic ice this summer. | His statement comes as polar experts are still reeling from the dramatic loss of Arctic ice this summer. |
| The Canadian Ice Service was among the organisations monitoring the retreat and its director, Doug Bancroft, told the BBC that he was "stunned" that this extent of melting had not been expected for decades. | The Canadian Ice Service was among the organisations monitoring the retreat and its director, Doug Bancroft, told the BBC that he was "stunned" that this extent of melting had not been expected for decades. |
| "It just seemed as if it wasn't going to stop. Normally, towards the end of August, the beginning of September, the melting slows down and stops and we get ready for the coming fall and the refreezing during the winter. But it just kept on going and the concern was, 'Well when is it going to stop this year?' - and ultimately when it did stop, it shattered all previous records." | "It just seemed as if it wasn't going to stop. Normally, towards the end of August, the beginning of September, the melting slows down and stops and we get ready for the coming fall and the refreezing during the winter. But it just kept on going and the concern was, 'Well when is it going to stop this year?' - and ultimately when it did stop, it shattered all previous records." |
| Research cruise | Research cruise |
| On Monday, the Canadian Coast Guard is preparing to send one its research vessels, the Amundsen, through the Northwest Passage with about 40 scientists on board. | |
| Equipped with a remotely operated robot submarine and a sonar system, the ship will undertake a detailed survey of the sea-bed - essential if the waterway is to become more open to commercial shipping. | Equipped with a remotely operated robot submarine and a sonar system, the ship will undertake a detailed survey of the sea-bed - essential if the waterway is to become more open to commercial shipping. |
| 'Northwest Passage opens' Sailing the passage Researchers on board also hope to study the changing patterns of the ice - not only the ice that grows and retreats with the seasons but also the far thicker multi-year ice which drifts with the Arctic currents and poses the most serious threat to any vessels. | 'Northwest Passage opens' Sailing the passage Researchers on board also hope to study the changing patterns of the ice - not only the ice that grows and retreats with the seasons but also the far thicker multi-year ice which drifts with the Arctic currents and poses the most serious threat to any vessels. |
| A British team on board will study the sediment on the sea-bed to hunt for a chemical record of changes in the ice stretching back for the past thousand years - a vital task to help understand the likely rate of change in the future. | A British team on board will study the sediment on the sea-bed to hunt for a chemical record of changes in the ice stretching back for the past thousand years - a vital task to help understand the likely rate of change in the future. |
| BBC News will join the ship for its journey through the Northwest Passage. The route is at - or beyond - the limits of satellite coverage but the plan is to provide regular updates wherever possible. |