Last edited by Jugore
Tuesday, May 19, 2020 | History

2 edition of Ship magnetism and the magnetic compass. found in the catalog.

Ship magnetism and the magnetic compass.

F. G. Merrifield

Ship magnetism and the magnetic compass.

by F. G. Merrifield

  • 223 Want to read
  • 20 Currently reading

Published by Pergamon Press in Oxford, New York .
Written in English

    Subjects:
  • Magnetism of ships.,
  • Compass.

  • Edition Notes

    SeriesThe Commonwealth and international library of science, technology, engineering, and liberal studies. Navigation and nautical courses,, v 1
    Classifications
    LC ClassificationsQC849 .M45 1963
    The Physical Object
    Pagination189 p.
    Number of Pages189
    ID Numbers
    Open LibraryOL5857244M
    LC Control Number62019267
    OCLC/WorldCa1557040

    Magnetism of a new ship can be particularly unstable. Therefore, the performance of a magnetic compass should be monitored carefully during the early life of the ship, and adjustments made if necessary. To ensure a compass is in good working condition, it is important to check performance of magnetic compasses particularly after. The magnets used in the directional system and the corrector magnets for correcting the permanent magnetic fields of the ship should have a high coercivity of at least kA / m. Material used for correcting induced fields should have a low remanence and coercivity. All other materials used in the magnetic compass and in the binnacle should be non-magnetic, so far as reasonable.

    Magnetic Compass Deviation and Correction By W. Deene. In addition to dealing with the properties of magnets and the earth's magnetism, three chapters are devoted to the magnetism of the ship, the third explaining in detail the reason for, and composition of, the "nine rods".Price: $ Bigger ships contains Direct current (D/C) coils system at many places in the ship’s structure to reduce the effect of ship’s permanent magnetic field. It generates a magnetic field that is same and contradictory with the permanent magnetism of the ship. This process is commonly termed as Degaussing method. Though this degaussing process.

    Despite all the fancy GPS navigation systems, the basic compass is still an important part of aircraft navigation. If a cargo of magnets alters the compass readings, accurate navigation might be compromised. Remember, your magnets are competing with the magnetic field of the Earth, whose strength is only about gauss on average.   The magnetic compass is one of the oldest marine instruments used for navigation at sea. Although newer technology providing more accurate & reliable heading information to navigators is in use, the magnetic compass is still legally necessary to have onboard ships (irrespective of the size) for the Safety of Navigation as stated in the Safety of Life at Sea (SOLAS) Convention.


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Ship magnetism and the magnetic compass by F. G. Merrifield Download PDF EPUB FB2

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.5/5(1). 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 Edition: 1. 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. Ship Magnetism and the Magnetic Compass: The Commonwealth and International Library of Science, Technology, Engineering and Liberal Studies: Navigation and Nautical Courses (Commonwealth Library) - Kindle edition by Merrifield, F.

G., Smith, J. Clough, Earl, G. Download it once and read it on your Kindle device, PC, phones or tablets.5/5(1). 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.

Ship Magnetism and the Magnetic Compass Volume 1 of Nvaigation and nautical courses Volume of The Commonwealth and International Library Volume 1 of The Commonwealth and international library of science, technology, engineering, and liberal studies.

Navigation and nautical courses: Author: F. Merrifield: Publisher: Pergamon Press, Ship Magnetism And The Magnetic Compass - Free download Ebook, Handbook, Textbook, User Guide PDF files on the internet quickly and easily.

Ship Magnetism and the Magnetic Compass The Commonwealth and International Library of Science, Technology, Engineering and Liberal Studies: Navigation and Nautical Courses by F. Merrifield Author J. Clough Smith Editor.

Magnetism and the Compass - Ship Magnetism and the Magnetic Compass. Merrifield, viii + pages, 4 charts, 57 figs., soft cloth, 775 × 525 in., Pergamon Author: W. May. Buy Ship Magnetism and the Magnetic Compass: The Commonwealth and International Library of Science, Technology, Engineering and Liberal Studies: Navigation and Nautical Courses (Commonwealth Library) by Merrifield, F.

G., Clough Smith, J. H., Earl, G. (ISBN: ) from Amazon's Book Store. Everyday low prices and free delivery on eligible orders.5/5(1).

An essay on magnetic attractions, and on the laws of terrestrial and electro magnetism: comprising a popular course of curious and interesting experiments on the latter subject, and an easy experimental method of correcting the local attraction of vessels on the compass in all parts of the world: with an appendix, containing the results of experiments made on ship board from latitude 61o S.

to latitude. Ship magnetism and the magnetic compass by F. Merrifield; 1 edition; First published in ; Subjects: Compass, Magnetism of ships.

The amount a magnetic compass needle is deflected by magnetic material in the ship is called deviation. Although deviation remains a constant for any given compass heading, it is not the same on all headings.

Deviation gradually increases, decreases, increases, and decreases again as the ship goes through an entire ° of swing.

Deviation: A ship is made of steel, acquires a certain magnetism and so inherently has an effect on the magnetic compass. In other words, the compass needle on board does not lie on the magnetic meridian but is deflected on one side or the other because of the ship’s magnetism.

Additional Physical Format: Online version: Merrifield, F.G. Ship magnetism and the magnetic compass. Oxford, New York, Pergamon Press, (OCoLC) Magnetic Compass & Ship Magnetism – Simplified Explanation. The Wet Card Compass. As stated earlier wet card compass is less sensitive to small disturbance and so more useful as a steering compass, without any loss of accuracy.

The Wet card is made of mica in one piece & the graduations are printed on the edges. The card is attached to a. Get this from a library. Ship magnetism and the magnetic compass. [F G Merrifield] -- 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. This video explains how a ship acquires it magnetism. The concepts of hard and soft iron leading to permanent and temporary magnetism are discussed.

Why deviation changes with heading is. Legal requirements concerning the magnetic compass and its adjustments are also explained. Previous video explained: Magnetism - an introduction to the ship's magnetic compass: e.

Magnetic Compass Adjuster course enables ship’s officer to carry out the adjustment themselves and keep compass calibrated to avoid SIRE findings. According to AMSA, failure to maintain a magnetic compass in a good working order or to monitor deviations may result in a vessel being delayed or detained, and the vessel owner and/or Master can.

Lets discuss the effect of ships temporary magnetism on the compass needle. Ships temporary magnetism is that which changes as soon as the ships orientation changes with respect to earth magnetic field i.e.

as soon as the ships heading change. To understand its effect we divide it into nine components.For “regulated Australian vessels” there is no minimum statutory period when a compass should be adjusted provided deviation on all headings is less than 5 degrees, compass deviation book is maintained and the compass is kept in good condition.

Magnetism of a new ship can be particularly unstable. Therefore, the performance of a magnetic.magnetic compass adjustment in one text.

As such, it treats of the basic principles of compass deviations and their correction, and not of the details of particular compass equipment. Although this text is presented as a systematic treatise on compass adjustment, ship's personnel who are inexperienced withFile Size: 1MB.