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Old 10 March 2013, 08:41   #41
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Some years back I was at the press launch of a new range of RIBs. They were very new indeed, barely finished in fact, and didn't have any nav or comms gear at all.

This wasn't a problem as we were only going from Lymington over to Yarmouth for a good lunch at the George. So simple you'd think you could do it with your eyes shut.

Conditions were great, for all of a mile or so until we went slap bang into a wall of the thickest fog I've ever been in. Within about a minute we were profoundly lost, completely unable to even work out what direction we were facing. We may as well have had our eyes shut, it wouldn't have made any difference. Our lunch booking was only saved by an accompanying RIB with radar that managed to round us up and shepherd everyone to the pub.

There were four of us on board, all pretty familiar with the area, and all used to finding our way around. We weren't in any particular danger all all, but the feeling of complete helplessness is something I won't forget. An iPhone would have been really handy that day...
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Old 10 March 2013, 08:51   #42
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FWIW the echo sounder is an underused tool for navigating, as it can be used to indicate when you are getting in shallow water, and as a cross reference to your dead reckoning.

I agree that navigating solo is tricky, but you have a throttle, and can always put it to idle while you assess the situation, if it is too deep to anchor, you are not really in danger, and as for having the wife and kids, they can help by listening etc.
I'm surprised no one else has mentioned the echo sounder. It's invaluable especially in blind navigation. An echo sounder used with a paper chart and ships compass is one of the most valuable tools on a vessel in fog. Doesn't matter whether its a rowing boat or a 50m motor yacht. If you've lost all other forms of navigation aids it can get you to a safe harbour if you know how to use them correctly.

Following a 5m contour line on a chart in poor visibility gives some certainties that you ain't going to hit a 50000 tonne ship anchored in the bay or motoring across it. The only other vessel you might hit is another RIB following the same contour line into the same harbour.

Following a contour line takes practice but is very rewarding when done correctly and yes it can be done on a RIB. If your chart plotter packs up you'll need a paper chart as back up to show what's around / under you. Even a photocopy of the intended cruise area for the day is better than nothing.
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Old 10 March 2013, 09:33   #43
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cos you ARE ALL GOING TO DIE!!!!

Great stretegy
Absolutely not. As I said, I carry backup GPS/plotter, compass, watch etc. The point I was trying to make, is that paper charts aren't the silver charm that will protect you from all that is evil, some would have us believe. Unless you know where you are to start with, they are toilet paper in fog. We normally leave port heading for a fixed point, usually a wreck, the trip home is a reciprocal of the trip out.
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Old 10 March 2013, 09:58   #44
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Absolutely not. As I said, I carry backup GPS/plotter, compass, watch etc.
What? No Sunstone?

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Old 10 March 2013, 10:19   #45
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What? No Sunstone?

Very cheap too ..


http://www.ebay.co.uk/itm/5-x-Sunsto...item35c1672e7d
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Old 10 March 2013, 11:10   #46
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What? No Sunstone?

No good in fog, stick to the trusty lode stone
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Old 10 March 2013, 11:21   #47
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No good in fog, stick to the trusty lode stone
Every sensible Viking also carried a Sun stone or (Norwegian or Icelandic feldspar ) a translucent stone around his neck for use in fog or sea frets which would show up the suns position even on a grey day ,
& the old shout or yell hoping for an echo back from a cliff face .
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Old 10 March 2013, 12:15   #48
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[QUOTE=m chappelow;521652] a translucent stone around his neck for use in fog or sea frets which would show up the suns position even on a grey day ,
QUOTE]

Well I never, you learn summat new every day
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Old 10 March 2013, 13:32   #49
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Apparently you can have your chakras balanced by them too. Erm, wow?
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Old 10 March 2013, 13:42   #50
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and if you want to know the weather


http://www.theweatherstone.co.uk/

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