Coast Guardsman Aboard a Sub-buster Blinks a Message to Another Coast Guard Vessel. Coast Guard Blinker. Somewhere at A Coast Guardsman aboard a Coast Guard sub-buster blinks a message to another Coast Guard vessel while patrolling the sea lanes in the search for enemy undersea raiders. Blinker light and semaphore signalling are used extensively in preference to radio because of the danger of enemy ships detecting the radio sound waves. The powerful blinker lights are easily seen during the daylight hours as well as the night.

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Size: 5693px × 4791px
Photo credit: © NB/USC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 17-a2-170, 26-, coast, guard, history, job, rdss, rg