航海英语 Compass System M3U6 magnetic compass 课件.ppt

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2020-09-16 发布于北京
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航海英语 Compass System M3U6 magnetic compass 课件.ppt

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Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. United States Coast GuardU.S. Coast Guard Auxiliary Basic Coastal Navigation - Chapter 2Approved USCG Auxiliary - Department of EducationCopyright ?2004 Coast Guard Auxiliary Association, Inc. * * * * What We’ll Cover Brief history Compass design Principles of operation Deviation swinging ship Compass calculations * 12 DEC 04 Brief History Phoenicians used magnetic direction finder. Evidence for use in Europe/China ~1100. Compass card invented ~ 1300. Variation understood by 1492. Charts showed variation by 1700. * 12 DEC 04 Flinders bar to compensate for deviation developed 1801. Ritchie liquid filled compass - 1859. Modern gyrocompass developed by Speery and Anschutz-Kanpfe ~1900. Brief History * 12 DEC 04 Parts of a Compass Constructed of non-magnetic materials. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. Parts of a Compass Indexed card to read direction. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. Parts of a Compass Lubber line pins to align compass with boat. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. Parts of a Compass Gimbal system to keep card level when boat heels and pitches. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. Parts of a Compass Spherical bowl with expansion diaphragm. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. Parts of a Compass Fluid filled damping system to impede rapid card movement. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Association, Inc. Parts of a Compass Compensation system to reduce deviation error. * 12 DEC 04 Basic Coastal Navigation - Chapter 2Copyright ?2004 Coast Guard Auxiliary Associa