Thunder Ranch vs Nav Rules

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The complete Navigation Rules, International (COLREGS) and Inland, side by side, rule by rule. Plus the Boat Crew Seamanship Manual and the International Code of Signals. Three public domain maritime references in one offline library. Not a government app. This is an independent reference, not affiliated with or endorsed by the US Coast Guard, the USCG Auxiliary, NGA, or the Department of Homeland Security. Its content comes from these three official public domain publications, and no other source is used: • Navigation Rules and Regulations Handbook (USCG Navigation Center): https://www.navcen.uscg.gov/navigation-rules-amalgamated • Boat Crew Seamanship Manual (USCG, hosted by the U.S. Coast Guard Auxiliary): https://rdept.cgaux.org/documents/BoatCrewHandbooks/16114_5C%20BoatCrew%20Seamanship%20Manual.pdf • International Code of Signals, Pub 102 (NGA): https://msi.nga.mil/Publications/ICOS No ads, no subscription, no account, no data sharing. NAVIGATION RULES HANDBOOK (COLREGS AND INLAND) The complete International Rules (72 COLREGS) and Inland Rules (33 CFR 83), presented side by side rule by rule exactly as the official handbook does, with a quick toggle to show only International, only Inland, or both at once. Parts A through F plus Annexes I through V. This is the whole rules of the road text, not a summary or a quiz bank. BOAT CREW SEAMANSHIP MANUAL The full manual: boat handling, towing, search and rescue, heavy weather, navigation, sound signals, anchoring. Every chapter, fully searchable. INTERNATIONAL CODE OF SIGNALS (NGA PUB 102) All 40 signal flags (26 letters, 10 numerals, 3 substitutes and the answering pennant) with their single letter meanings, plus the two letter Distress, SAR, Maneuvering and Weather sections. WHO IT IS FOR • Captains preparing for a USCG OUPV (six pack) or Master license • Anyone studying the rules of the road for a licence exam • Coast Guard Auxiliarists working through Boat Crew Member or Coxswain qualifications • Recreational boaters and sailors who want the real rules at a glance, not a paraphrase • Anyone responsible for the safe operation of a vessel WHY THIS ONE The complete text of all three references, full search, and bookmarks are free. One optional purchase adds the interactive study tools, with no subscription. PRO TOOLS, ONE OPTIONAL PURCHASE SIDE BY SIDE RULE COMPARISON International (72 COLREGS) and Inland (33 CFR 83) shown in parallel for every rule. Toggle between Both, International, and Inland. This is the view license candidates need, because the exam asks which jurisdiction says what. KNOT LIBRARY Bowline, cleat hitch, clove hitch, square knot, sheet bend, round turn and two half hitches, anchor bend. Each with its use case, the verbatim Boat Crew procedure, and a deep link back to the manual section that covers it. SIGNAL FLAG DECODER A 40 flag grid with the phonetic name and glyph for every flag, plus a multi flag hoist decoder. Type the hoist, get the meaning. Works offline. QUALIFICATION CHECKLIST 42 Personnel Qualification Standards tasks across 10 categories including helmsmanship, navigation, engineering, communications, seamanship, first aid and damage control. Check off each task as you complete it. Every task deep links to the relevant Boat Crew Seamanship section so you can study it right there. OFFLINE BY DESIGN • Fully offline, no signal needed underway • Dark, low light interface for the wheelhouse at night • Fast search across all three references at once • Bookmarks and recently viewed sections • Progress saved on your device SAFETY DISCLAIMER This app is a study and reference tool. NOT FOR PRIMARY NAVIGATION. Consult current official publications, Local Notices to Mariners, and current charts when actually underway. Verify any operationally significant rule or procedure against the current source.