價格：免費
檔案大小：7.8 MB
版本需求：系統需求：iOS 12.1 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
Great Circle Sailing planning assistance tool. Created as assessment and planning tool for trans-ocean passages along great circle routes. Designed and designated for marine navigators, officers, Captains.
支援平台：iPhone, iPad