Flag Alpha at night

peterb

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No problem. Colregs rule 27(d) gives the night signal for underwater operations as the normal power vessel lights for a vessel of her size, plus red-white-red all-round lights in a vertical line, plus two vertical greens on the safe side to pass and two vertical reds on the dangerous side (i.e. the same lights as a dredger).

But then 27(e)(i) says that if the size of vessel makes it impractical to show those lights, then it should show just the red-white-red in a vertical line. And, 27(e)(ii) also gives the day signal for a small diving vessel; not just flag 'A', but a rigid replica of flag 'A' not less than 1 metre in height.

Incidentally, if your query arises from Current News 264, the question wasn't raised at a RATS meeting, or the same answer would have been given there.
 

alant

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probably lights showing the vessel is "restricted in her ability to manouver" with maybe additional lights indicating "engaged in dredging or underwater operations"
 

Boatman

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An interesting discussion with divers of the PADI ilk discovered that there are a number of issues with "I Have a diver down" the PADI flag is not internationally recognised yet many divers didn't know flag Alpha.

How can this situation have come about? And I certainly only recently learned of the PADI flag
 

ianwright

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PADI,,,,,,,?that must be since my time, I never was big on acronyms, I had trouble with SCUBA, nasty Americanism,,,,, Bear with me, I trained under a CPO Clearance diver,worked in hand pumped Seibe Gorman Standard dress before we had Aquadine and Ratcliffe hats and my Saturation Cert is number 13,,,,,,, :)
 
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