St Lawrence Seaway
- a waterway in North America, which flows for 3,768 km (2,342 miles) through the Great Lakes and along the course of the St Lawrence River to the Atlantic. It is open along its entire length to ocean-going vessels.圣劳伦斯航道（北美航道, 流程3,768公里, 即2,342英里, 流经五大湖, 沿圣劳伦斯河的航道注入大西洋; 它全程向远洋轮开放）。