Great Lakes St. Lawrence Seaway Vessel Transits
收藏data.gov2026-02-14 收录
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The Great Lakes St. Lawrence Seaway’s navigation season generally begins in late March and closes in late December. Opening and closing dates vary from year to year.
五大湖-圣劳伦斯海道（Great Lakes St. Lawrence Seaway）的通航季通常始于3月末，结束于12月末，其开航与停航日期每年各不相同。
