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Old 27 July 2013, 04:51   #361
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So glad you are here to tell the tale,

Frequently gone out alone my self , never with out VHF on my vest and a hand held GPS so as I can shout a position if need be
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Old 27 July 2013, 05:48   #362
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Great to hear you are ok and some useful info on what happens we can learn from.

Appreciate you sharing it.
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Old 27 July 2013, 05:59   #363
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MustRIB - well done for telling your story. Jockey seats take huge forces and you are not the first person to rip one out. No doubt your preparedness saved you. Interesting that the yacht was so close - I've never been convinced by personal flares - but perhaps. Whilst in the water you worried about nobody searching for you - in reality the PLB did exactly what you needed - and the response that Paul Glazel describes with major ferries, helos, lifeboats and warships searching for you is quite impressive for a ribnobber!

I'm surprised the Helo crew didn't think you must have banged your head when you said you wanted to keep going!
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Old 27 July 2013, 06:39   #364
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MustRIB - well done for telling your story. Jockey seats take huge forces and you are not the first person to rip one out. !

Glassed in console and jockey, at least the front set, my rears are removable as is my box for fishing or general storage
Got to be best option for a boat designed to go out in any weather,
At least your safe and that's the only out come I enjoy reading , chin up plenty to talk about in your local, and in others mind next time they go out in a god sea, we all get a bit cocky at times to much gas
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Old 27 July 2013, 06:57   #365
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I'd be interested to see pics of the failed seat/deck attachment if possible?
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Old 27 July 2013, 07:42   #366
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You might need to be quick asking for those photos, according to his blog he's working on repairs and hoping to join the trip at some stage!
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Old 27 July 2013, 08:32   #367
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Live Ships Map - AIS - Vessel Traffic and Positions
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Old 27 July 2013, 09:59   #368
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Glad your okay MustRib, looks like your PLB was your saving grace, you don't think of things like impact damage when wearing your handheld vhf on your L.J.

Great story for when your in the pub with your mates

Stay safe,

k.
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Old 27 July 2013, 12:41   #369
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MustRib ... sooo much to learn from this. Going to read over your post again and absorb. Thanks for sharing. Glad you're safe
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Old 27 July 2013, 13:18   #370
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Quote:
Originally Posted by ShinyShoe View Post


I was under the possibly mistaken impression that 406MHz between the 70's of latitude had geostationary cover so you'd expect almost instant transmission. 60 second delay inbuilt in set to avoid false alarms. Then time for a satellite possition lock then transmit was my understanding.
I thought the LEO sats were not geostationary and were able to position the transmitter to within a couple of miles or so but had a delay as they needed to move to do the positioning.


That sounds to me like it took 30mins to get a sat fix. Thats very slow.

I think youre getting satellites and GPS mixed up a bit, First is the initial distress alert, which would have gone out almost instantly, but when falmouth fax or GD92 the info over to milford haven, part of it wil have read 'unresolved' which is relating to position.

Geostationary sats don't move relative to the earth, so there is no doppler effect, and therefore no means of telling how far away you are from the sat. (your position)

The PLB has a GPS built in, which can presumably populate a 'position' field when sending the 406 distress alert, it's possibe that it took he PLB a while to attain a GPS fix (alarm type noise), I know some can be awkward if they don't have a clear view of the sky, if it was in a lifejacket, or pocket, or maybe they are just slow?( I know older GPS units take a long time to get a 'fix' when turned on after a long time off, presumably because they need to find the satallites again)

OR the alarm type noise described was a LEO sat passing over and allowing a position to be deterimed using doppler.

either way, in the grand scheme of things, and considering what these were originally designed for (off shore alert where help might be hundreds of miles away) I don't consider 30 minutes a ridiculous amount of time.
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