Oceania menggantikan Perbatasan gmdss radio operator tisu Berisiko Kejujuran
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GMDSS Restriced Operator Certificate Course – Hong Kong Maritime Institute
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El Dorado Offshore - For offshore rigs without a physical connection to the mainland, communication is literally a lifeline. Offshore Radio Operators serve as both the ears and the voice of a
What are the STCW Requirements for GMDSS Radio Operator?
General radiotelephone operator license - Wikiwand
General Operator's Certificate for GMDSS – MERIDIAN
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