價格：免費
檔案大小：47.4 MB
版本需求：需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Greenwoods Guide to Great Lakes Shipping 2017 Edition is the most accurate, complete and authoritative guide to Great Lakes shipping. Includes 28 tabbed sections including fleets, ports, docks, terminals, shipyards, operations and much more. Published for over 50 years and updated annually. Great Lakes/St. Lawrence Seaway System map and port maps also included.
支援平台：iPhone, iPad