What would the number 1090 indicate?
Official USCG Answer & Rule Citation
Correct Answer: Option C — A coast station SELCALL number.
Under ITU and FCC GMDSS standards, selective calling (SELCALL) numbers for coast stations are designated by specific shorter digit sequences, where 1090 identifies a shore-based facility rather than a nine-digit Maritime Mobile Service Identity used by mobile ship stations.
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