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by j4_james
3506 days ago
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Yeah. As someone who lives on navigable river, it's not uncommon for me to see boats flying signal flags for variety of reasons. There's not a wide range of usage here mind you - it's typically tugs and workboats flying the RY signal (you should proceed at slow speed when passing me), survey vessels flying IR (I am engaged in submarine survey work) or cruise ships flying the H signal (I have a pilot on board). Naval vessels are kind of an interesting case though. They also fly the H flag when they have a pilot on board, but when they do so it's in combination with the answering pennant at the top of the hoist. I believe this is a standard practice when communicating with merchant marine vessels to indicate that the signal is based on the ICS rules and not the naval signal book which can mean something completely different. Naval vessels also often display their call sign using these signal flags when arriving and departing from port. |
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