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Old 15 February 2010, 08:14   #21
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If it was a commercial operation it should have been posted in notices to mariners, leisure dive vessels should display a "rigidised replica of Int flag A" so the plywood one wasn't that far off the mark. Any divers down should use Surface marker buoys-BUT there is some ignorance of these and no standard configuration. A lot of divers will use a delayed surface marker (pops up at end of dive) these are a fairly standard shape but you do sometimes get numbnuts coming over to see what the strange thing is.

If all this is in place and someone is opened up by a prop then they will probably face the full weight of the law- unless you live in mexico and have lots of money.
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Old 15 February 2010, 09:28   #22
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but you do sometimes get numbnuts coming over to see what the strange thing is.
Yes. I've had this problem - I generally interpose the RIB between divers and "threatening" craft. I get quite, um, pushy about it too .
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Old 15 February 2010, 09:39   #23
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Yes. I've had this problem - I generally interpose the RIB between divers and "threatening" craft. I get quite, um, pushy about it too .
And rightly so.
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Old 15 February 2010, 11:46   #24
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I have had a fin keel on a yacht miss me by just a few feet once. I was under a very large orange bouy with the liveaboard vessel about 50 yards away picking up divers and flying a huge A flag.
Apparently they used the bouy as a turning point and shaved it as close as possible, the boat was actually picking up divers and was static doing so.
Its quite normal to have boats come and investigate the "strange bouys" up here and get upset when they are told to "F** off"
In saying that diver boats can be just as bad, I could tell some scary stories about some of the things I have seen.
Thinking about it the only person I know who has been hit by a prop was Mike Morgan from Puffin Divers who apparently fell out his own boat and got hit by his own prop so I am not sure he counts..........
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Old 15 February 2010, 12:48   #25
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From what i remember reading RULE 27 col regs the A,alpha flag is supposed to have a minimum size of 1mx1m for uk waters AND be that it has an all around display from any angle ,,,, any size smaller than that and there could be a legal get out if you run over a diver with a boat not displaying the correct size flag ,also the flag must in times of nil wind conditions or where it does not fly proper arrangement must be made to enable it to fly and display properly eg .a ridgid arm along the upper edge ,,,,so before any of you divers out there start gobbing off other boaters for getting too close ,,make sure that your own boat is in order first ,,,lol
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Old 15 February 2010, 13:05   #26
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That would make sense as whats the point of a visual aid when its flopped down the flag pole, which is what part of the origainal question was
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Old 15 February 2010, 13:08   #27
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the most effective thing i saw was a dive rib with a banner down each side with big red letters DIVERS. KEEP CLEAR being in abersoch with loads o knobbers it worked too
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Old 15 February 2010, 14:32   #28
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shallow areas of 4m or so half way along and noticed some sort of service vessel about 30' long in the distance ahead just off the shore and proceeded to go tighter on my turn out to give it a wide berth and keep well clear.. noticed a geezer waving from the deck .. more than just an acknowledgement and suddenly thought possibly divers in area
Either that or he was aground / sinking and trying to get your attention! I'd have thought frantic waving, a bit like a mysterious SMB is more likely to make someone who doesn't recognise and A-flag come closer to investigate than back off.

Do AIS tranmitters have the ability to show a 'diver down' status?
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Old 15 February 2010, 14:59   #29
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Do you have an AIS reciever on the boat?
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Old 15 February 2010, 15:06   #30
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I'm sticking with my technique:

1. Big "F-O" A-Flag
2. Warning on VHF
3. Ramming

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