Celestial Navigator vs Nautical Rules

Celestial Navigation Calculator with - perpetual Almanac - star finder chart with animation. Use phone sensor for altitude. - calculation of lines of position ( intercept/delta ) - celestial object data - meridian passage calculation - running fix support - astronomical position calculations with two or more altitude observations - Hipparchus 150 star catalog - World chart with lines and position Program can be set to use device's sensors (gyro, compass) to position the star finder chart in real time. Capture celestial object approximate altitude. Correct Altitude with a Marine Sextant reading (not included). You still need a marine sextant to do celestial navigation, but the phone sensors may be used for training. Software for iPhone and iPad, with the same features. e-book with manual and celestial navigation tutorial.

Nautical Rules is the ultimate study companion for mastering the USCG Navigation Rules (COLREGS). Whether you're preparing for your captain's license exam or refreshing your maritime knowledge, this app provides everything you need to succeed. COMPREHENSIVE QUESTION BANK - Over 1,200 practice questions covering all Navigation Rules - Questions for both Inland and International waters - Covers Steering & Sailing Rules, Lights & Shapes, Sound Signals, and more - Detailed explanations SMART STUDY FEATURES - Take customizable tests with 10, 25, 50, or 100 questions - Practice mode with immediate feedback and explanations - Focus Area suggestions to target your weakest rules - Bookmark questions for later review - Review your mistakes to reinforce learning TRACK YOUR PROGRESS - Activity dashboard with test history and statistics - See your accuracy by rule (Rule 1, Rule 2, etc.) - Track your study streak and mastery level - View detailed results for each completed test DESIGNED FOR MARINERS - Clean, intuitive interface optimized for study sessions - No internet connection required - study anywhere - All questions based on official USCG Navigation Rules - Perfect for captains, SWO, sailors, and maritime professionals Whether you're studying for the USCG license exam, improving your seamanship skills, or just want to stay sharp on the water, Nautical Rules gives you the tools to succeed. Download now and navigate with confidence! --- Note: This app is an educational study aid and is not affiliated with or endorsed by the U.S. Coast Guard. For official rules and regulations, consult the official USCG Navigation Rules publications.