Ship’s Magnetism Effects of P, Q & R on Magnetic Compass | Marine Navigation

Understand how a ship’s magnetism affects the magnetic compass through the forces P, Q and R. This video explains permanent and induced magnetism, how these forces act on a compass, and why compass errors occur on board. Clear and simplified explanation for Chief Mate Phase II, Navigation exams, and deck officers preparing for competency assessments. 📌 Topics Covered: – Force P: Fore-and-aft component – Force Q: Athwartship component – Force R: Vertical component – Effect of ship’s magnetism on the magnetic compass – How errors are produced & corrected onboard Perfect for maritime students and officers revising magnetic compass corrections and ship’s magnetic field behaviour.