USA • UNITED KINGDOM • UAE • SINGAPORE • CHINA • CANADA www.tidelandsignal.com CASE STUDY Theft & Vandalism The theft and vandalism of aids to navigation (AtoN) sites has been a troublesome challenge for ports and AtoN operators around the world for a number of years. Aids to navigation sites are installed to warn mariners of hazards where both visual and audible signals are critical to the safe navigation of vessels, from large tanker ship

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