Vessel transits in Arctic waters grew by about 25 per cent from 2007 to 2008, according to the Canadian Hydrographic Service.
根据加拿大水文局的统计，2007年到2008年，北极水域的过境船只大约增长了百分之二十五。
The Canadian Hydrographic Service provides charts for vessels of all types, including cruise ships, commercial ships, military and coast guard vessels.
加拿大水文局为所有类型的船只提供海图，包括旅游船、商业船、军事及海岸警卫队的船只。
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