NAUTICAL CHART SYMBOLS ABBREVIATIONS is a reference guide for marine navigation that provides a comprehensive collection of symbols specified by the International Hydrographic Organization (IHO). This app also includes international abbreviations and supplementary national symbols used by the United States and the United Kingdom hydrographic offices. This program is perfect for reference, learning, and revision and is always accessible on your iPhone or iPad without any internet connection required.

The app is organized into five main sections, each with lettered sub-sections that are categorized to guide users through the hundreds of symbols. The sections are General, Topography, Hydrography, Navigation Aids and Services, and Index and Abbreviations. The app also includes a fully searchable index to all the symbols, and users can tap and enlarge the graphics for greater detail. In addition, the app provides free bonus content from "Safe Skipper," which includes tips on how to deal with emergencies such as abandon ship, engine failure, and medical emergencies. Overall, NAUTICAL CHART SYMBOLS ABBREVIATIONS is an excellent reference guide for anyone interested in marine navigation and boating safety.