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Old 14 December 2009, 10:43   #71
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Originally Posted by gibbo500 View Post
Yes she is fine, she was a bit narked she lost her favourite sunglasses though
That will be why she went quiet on the way home
I'd look into RW's offer - the wimen in peterheed don't wear sunglasses (owing to the fact that the've never seen the sun).
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Old 14 December 2009, 10:52   #72
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Originally Posted by Polwart View Post
And since Gibbo is not opperating commercially all rather irrelevant. The purpose of the bag is to keep you warm. Its highly distinctive colour is of little significance when returning to shore to rewarm a casualty - although granted if you find yourself needing to attract the attention of a lifeboat or helo it might help - but then your inflated l/j is bright orange too.

What makes you think that Scotchlite tape increases radar cross section?
Given the choice would you buy a black survival bag or an orange one for use on a boat?
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Old 14 December 2009, 11:00   #73
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LIfejacket choice

Having read through this thread I have decided to replace all of my lifejackets with autos.

I had previously believed that so long as there was another form of primary buoyancy being worn, like a dry suit, then a manual was the better choice.

However as I read through I thought back, even though we are out in most weather and regularly get well covered in spray/rain, there is no time when I think that an auto would have gone off by mistake. This includes launching and or generally splashing about.

Just my 2p.
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Old 14 December 2009, 11:16   #74
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Launching a heavy SR5.4 with flooding hull, on a very shallow slip, with a bottom made of silt, sh!t and fish guts that you sink into. Means getting wet as you have to walk the bugger out a bit before you can get the motor down.
Not wanting to butt in here, but... Could you not use an oar, boathook, or piece of stick, or something, to punt your way into deeper water, thus keeping dry and less smelly?

You'll have thought of that, I suppose.
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Old 14 December 2009, 11:33   #75
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Originally Posted by malthouse View Post
However as I read through I thought back, even though we are out in most weather and regularly get well covered in spray/rain, there is no time when I think that an auto would have gone off by mistake. This includes launching and or generally splashing about.

Just my 2p.
On that note - on our interesting voyage last weekend when we did get very very wet - both auto life jackets were fine - I think you probably need to totally submerge them to get the auto inflate to work

J
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Old 14 December 2009, 11:47   #76
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Given the choice would you buy a black survival bag or an orange one for use on a boat?
On a sunny day a black bag may warm up quicker (like dark tubes!). I think you are arguing for the sake of it now. They way you worded it originally implied that orange was the best colour rather than the most commonly found colour:
Quote:
Plastic survival bags that are orange might be better.
I used to have a yellow bag which worked just fine. An orange one is perfectly fine. You get some metallic coated ones which may actually be even better if they are robust enough. I'll leave it there is was meant to be a bit of a cheeky comment not a matter for significant debate
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Old 14 December 2009, 12:17   #77
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All the previous threads ignore the fact that there are two different types of automatic life-jackets:

a) the Halkey Roberts which relies on a chemical reaction with water to trigger the CO2 inflator. This can (in theory at least, although I have never heard of it happening) be triggered by a large wave or merely falling into shallow water (eg a puddle).

b) the Hammar which is a pressure activated trigger and requires the lower part of the jacket (where the activator is) to be at least 10cms under the water so as to develop the required pressure. These will not be accidentaly deplyed by a soaking but should be triggered in the event of immersion. I have, however, heard several stories of them failing to activate where people have gone into the water - possibly insufficient depth of water to create the pressure needed.

Both the above types can of course be activated manually if required (ie prior to abandoning ship).

All our jackets have the Hammar type which seem to me to be the most appropriate for open ribbing where there is always the possibility of water coming into the boat without necessarily wanting life-jackets deployed.
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Old 14 December 2009, 12:33   #78
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Whilst on the subject of life jackets, how many actually carry out regular checks? When i checked mine a month ago i noticed the gas cartridge on one of the jackets was very loose, i dont know if this would have prevented the inflation but you never know? Also i think to manualy inflate (via mouth piece) once in a while is good practice for a number of reasons, one to check there is no damage (holes, split seams) and it willl hold air but also to familiarise with the operation if ever the need arose. I think that deflating in the water with cold hands could be tricky with using the attached end cap inverted. Anyone experienced this?

Actually i am sat in front the computer with my LJ on, in regards to deflating probably not as difficult as i initially thought. however i am more aquainted with how the thing works now than what i was a couple days ago
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Old 14 December 2009, 12:43   #79
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Gibbo - my L/Jackets are quite often sitting for weeks at a time without being used, and can be sitting in the back of the car getting vibrated around a lot so I check the cylinders every trip. Make sure if you do this you also check the manual pull cord is outside the cover when you put it all away - I discovered recently during a "safety briefing" that I went to say "if it doesn't inflate pull the toggle " and the toggle wasn't there... you don't want to be swimming around going "shit the auto inflate hasn't gone off, its ok I'll pull the manual override" and then "oh shit the toggles not where I expected!".

I manually inflate with a pump through mouthpiece and leave overnight once a year. Its a long time since I've deflated a L/J in the water but I don't remember a problem.
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Old 14 December 2009, 13:22   #80
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Quote:
Originally Posted by Polwart View Post
And since Gibbo is not opperating commercially all rather irrelevant. The purpose of the bag is to keep you warm. Its highly distinctive colour is of little significance when returning to shore to rewarm a casualty - although granted if you find yourself needing to attract the attention of a lifeboat or helo it might help - but then your inflated l/j is bright orange too.

What makes you think that Scotchlite tape increases radar cross section?
Hello Polwart, good to hear from you again.
I use radar every working day and have very relevant and practical experience of it and its capabilities.
If you put two orange marker bouys in the water, one with reflective tape and one without, then fine tune your radar to the Fishnet setting (if you have it) then you will see the difference on the screen immediately.
The bouy without will maybe show as a feint signal in calm weather if you are lucky.
However, the bouy with the tape on it bounces back a very strong target signal in most sea states.
When you are in very dense fog this makes life very simple indeed.
Is it time for my whisky yet?
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