Piloting and Maneuvering of Ships

12 knots abeam appear beacon bearing bore buoy called chart circle compass computation correction course Courtesy cruiser danger determined Deviation difference direction angle distance draw earth east equal equator Example EXERCISES Figure formula given hairline heading Hence horizontal indicated knots known latitude length light lighthouse line of position logarithm Long longitude magnetic means measured Mercator chart meridian method miles minutes moving navigator needle object observes obtain Official U.S. Navy opposite Pages parallel pass plane Plot and label poles problems radio range finder reference relative represents scale ship ship's shown in Fig shows side Solution solve speed station steaming steered track true U.S. Navy photograph values variation vector vertical vessel