A History of the Ship's Compass

Mechanical gyroscopes are beginning to be replaced by ring-laser or hemispherical-resonator ones, but most ships retain a traditional magnetic compass as a backup—just in case. 

Antique Civil War Era E.S. RITCHIE SHIPS COMPASS Patented 1863 United States Nautical History Very Rare Museum Quality - Australia

Chinese Compass, Pigafetta's Compass, and Dudley's Ship's Compass, 1646. Original caption: From: Early Science in Oxford, Vol. 1, by R. T. Gunther, Oxford, 1921 Stock Photo - Alamy

WW2 German, Soviet, Allied militaria, uniforms, awards, weapons history. War relics forum

Navigation at Sea: From Stars to the Modern GPS

Funny History Chalk Drawing of Viking Ship and Stylized Compass Stock Illustration - Illustration of fairy, happy: 84869077

Compass - Wikipedia

ship's compass - AbeBooks

Detect, Control, Engage': The Aegis Concept

Kompas – Wikipedie

Beat to Quarters — Types of compasses on board ships in the 17th and

Antique compass on world map. Vintage geographic history maps with old marine compasses arrows, ancient nautical sailing ship journey compass. Navigat Stock Vector Image & Art - Alamy

File:Ship compass navy museum toulon.jpg - Wikimedia Commons

Sold at Auction: Museum Quality C.R. Sherman & Co. Ship Compass

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The Ship's Compass and its Binnacle - South Street Seaport Museum