General Navigation USCG Question #554 (Set 18)

You are proceeding under NCS (Naval Control of Shipping) and wish to send a message concerning an initial enemy contact. Which precedence will you assign this message?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Z (FLASH)

Initial enemy contact messages under Naval Control of Shipping require maximum urgency to alert defense authorities, demanding a FLASH (Z) precedence designator. FLASH messages are reserved for initial enemy contact and vital operational combat data requiring immediate transmission.

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