Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 18B is...

18B is

  • Manana Island Coast Guard Lifesaving Station / Weather Observation Station, Monhegan, Maine USA

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Acronym Definition Searched: WRYV SP PSM สวญ. YA 2M HBJ USN PPO 15057 DAMM RCPC WA RACL TDÇI