價格：免費
更新日期：2018-04-12
檔案大小：93.8 MB
目前版本：1.81
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
This interactive maritime transportation publication provides an overview of the Great Lakes St. Lawrence Seaway System, identifying its physical characteristics, the commodities it handles, the locks, the ports and its role in the North American economy. Coverage includes new technologies, efficiencies and initiatives that define the unified system, known as Highway H20, as an international transportation system.
支援平台：iPhone, iPad