Three-Point Bearing Plotting | Three Bearings of Same Object | Marine Navigation | Chief Mate 🚢

Three-Point Bearing Plotting | Three Bearings of Same Object | Marine Navigation | Chief Mate 🚢 This video explains the Three-Point Bearing Plotting Method (also called Three Bearings of the Same Object) — one of the most important concepts in marine navigation for Chief Mate, Second Mate, and Deck Officer exams. This method helps you determine: • Course Made Good (CMG) • Speed Made Good • Ship’s position at all three observation times 🧭 What Data is Given in Exam Questions • Three true bearings of the same object • Time intervals OR distances run between bearings • Wind direction and leeway (if given) • Any three of the following: – Compass course steered – Engine speed – Set of current – Rate of current ✍️ Step-by-Step Plot You’ll Learn 1️⃣ Draw true bearing lines from the object 2️⃣ Calculate ratio of time / distance between observations 3️⃣ Draw a reference line through the object keeping all bearings on one side 4️⃣ Mark distances A and B based on the ratio 5️⃣ Draw parallels to the middle bearing to get points C and D 6️⃣ Join C–D → this gives direction of CMG 7️⃣ Construct vector triangle (course + leeway + current) 8️⃣ Measure CF to get Distance Made Good / Speed Made Good 9️⃣ Transfer bearing lines to locate final position 🔟 Plot P, Q, R — ship’s positions at each observation By the end, you will clearly understand how CMG, current, and ship position are determined from bearings on a chart. 🎯 Best For ✔ Chief Mate exam preparation ✔ Second Mate candidates ✔ Cadets learning chartwork ✔ Anyone revising vector triangle problems Clear plotting + logical reasoning = full marks in exams. 🔍 SEO Three point bearing plot Three bearings of same object CMG from bearings Navigation exam plotting Vector triangle navigation Course made good explained Speed made good from bearings Plotting current set and drift Second mate navigation plotting Chief mate chartwork problems Position fixing using bearings Marine navigation bearing problems Three point fix navigation Exam chart work solutions Leeway and current plotting #️⃣ #Navigation #ChiefMateExam #SecondMateExam #ChartWork #MerchantNavy