G. E. Earl – författare

Marine Gyro-Compasses and Automatic Pilots, A Handbook for Merchant Navy Officers: Volume Two, Automatic Pilots is a reference book describing automatic pilots and ancillary equipment that are normally used in British Merchant Ships. This handbook discusses the uses, types, and advantages of automatic steering, including the different kinds of equipment and compasses found in many merchant ships. The text explains in detail the components of the Automatic Two-unit Gyropilot, the Gyro-Hydraulic Steering Control, the Tiller Pilot, and the Gyro-Electric Steering Control (all Sperry brand). This book outlines how each device is operated and maintained, as well as any possible equipment troubles that can be encountered. This handbook addresses all the different types of the Brown Automatic Steering systems, the general arrangements, principles of operation, trouble-shooting, and maintenance of the equipment. For smaller ships, the Sperry Magnetic Compass Pilot can be used because a transmitting magnetic compass bypasses the need for a gyro compass required in bigger automatic pilots. This book describes the methods of operation of the compass through the use of a chain and sprocket drive, a hydraulic power unit, or electrically operated switches, thus saving on costs. This handbook also notes the components, controls, and working principles of the Arkas Automatic Pilot, and the types of ancillary equipment such as the Course Recorder and Off-Course Alarm. This handbook provides useful information for Merchant Navy Officers, officers and personnel of the British Merchant Fleet, as well as other officers of sea-going vessels.

Ship Magnetism and the Magnetic Compass deals with the magnetism of ships and the deviation of the magnetic compass produced by this magnetism. Emphasis is placed on the distinction between the deviation itself and what causes the deviation. Numerous worked examples for exercise are found at the end of each chapter. Comprised of 15 chapters, this volume begins with an introduction to magnetometry, paying particular attention to the magnitude of the forces involved in magnetism and the manner in which these forces act. The strength of a magnetic pole is also considered, along with the angle of deflection of the needle when in two magnetic fields. Subsequent chapters offer a thorough treatment of the strength of the magnetic field and the magnet''s moment of inertia and magnetic moment; the earth''s magnetic force; and how the different parts of the ship''s magnetic force give different types of deviation. The book also explains the heeling error and its causes; the principle underlying successful compass adjustment; the effect of the ship''s magnetic forces on the directive force felt by the compass needles; and sub-permanent magnetism. This monograph will be of value to students and practitioners interested in ship magnetism and the magnetic compass.

Marine Gyro-Compasses and Automatic Pilots: A Handbook for Merchant Navy Officers, Volume One: Gyro Compasses is manual for the various types of compass utilized in naval navigation. The text details the apparent motion of fixed objects, and then proceeds to discussing the principles of free gyroscopes. Next, the selection tackles controlled gyroscopes and gyroscopic compasses. The text also covers errors and corrections, along with the comparison of gyroscopic and magnetic compasses. The subsequent chapters talk about the different types of gyro compasses, such as Sperry Gyro-Compass Mark E. XIV, The Brown Gyro-Compass Types A and B, Arma-Brown Compass, and The Marine Gyrosyn Compass. The book will be of great use to student and professional maritime navigators.