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Old 18 January 2006, 19:59   #11
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Quote:
Originally Posted by Rogue Wave

The rafts are held on to the boat with Hamar releases and they automaticlly cut the hold on to the cardle after a bit of a soaking. The liferaft is thrown overband it is held on to the boat buy a cord known as the weaklink so called as it is designed to break when the vessel sinks below a certain depth usually 2 metres but until that time it secures the liferaft to the boat so it doesn't float away and you can get in it!


IWISHIHADAWESITE.oc.ku
Thanks for all the info - yes I will be doing the sea survival course - did one quite a few years ago through my father with BP but was not official.

I do hope to get the boat coded for commercial use.

I originally intended to put the liferaft on the foredeck/sunbed to balance out the boat better but I still can't see how it would deploy from there if the boat capsized.

If it is securely fixed to resist wave jumping and then the boat flips won't it just inflate UNDER the boat???

To be honest I wonder if some sort of scramble net would be a good idea to get everyone onto the upturned hull.
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Old 19 January 2006, 07:38   #12
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The real trick is not to capsize the boat in the first place!

Your buddies in Pembroke were lucky with their capsize (no real injuries) and the fact that a second boat was on scene.

If the boat is capsized the Hamar will release the raft from it's cradle. I think this will sink and then the liferafts Hamar will activate and the raft deploys and surfaces. The currents should take the raft away which will be still tethered by the weaklink. I am not too sure of this but I am going to see my buddies in Ocean safety this afternoon so I'll ask em.

scramble net to gain access to the upturned hull is a nono to hard to hold on to in te rough weather. Don't forget as you get near to drowning you loose your grip reflex, I think your hands could get tired after a few hours. Under those circumstances the best place to be is in the liferaft.
I am presuming the capsize would be caused by extreme conditions .

I think they have been fitting Hamars for about 7 years so you may have attended the cours before then. If you are still connected with BP try and get on their courses....their safety attitood is excellent and they run good courses. I work mostly for BP in de Norf C and have been most impressed

It might well be worth talking to Tim Griffin about this as he has gone a long way down the safety road and is very active in lifesaving
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Old 19 January 2006, 08:03   #13
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Quote:
Originally Posted by Rogue Wave
........ BP ......their safety attitood is excellent and .....
'cept if you live in the vicinity of Graingmouth... *BANG*.. "what was that?" .. you may not believe that.......
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Old 19 January 2006, 09:46   #14
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My understanding is that:
1. yer boat sinks.
2. At around 3m of water pressure the Hammar pops.
3. Providing you have followed the fitting instructions the raft floats to the surface.
4. Upon the painter being fully pulled (the painter length is usally marked on the raft) by the sinking boat the raft deploys, if your boats is in water shallower than the length of the painter you deploy it yourself.
5. If your boat sinks in water deeper than the painter then the bouyancy in the raft will break the "weak link" , if not depending on the sea conditions you either cut the painter or sit tied onto your wreck........handy for future diving .
6. You sit and eat the Kendal mint cake hoping your insurance is up to date.

I'm not sure how all this would work on an inverted Rib. I don't think there would be enough water pressure to pop the hammar, so a bit of dooking would be required to set it free.
Any ideas?
Andy
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Old 19 January 2006, 10:02   #15
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Andy

You should get a job writing instructions for life rafts!

Jono (The kind of Welsh One)
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Old 19 January 2006, 10:23   #16
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Quote:
Originally Posted by codprawn
I thought of having one each side of the A frame - almost resting on the tubes - that way in the event of a capsize it should be possible to inflate them - is this a good idea???
I wouldn't have thought so. Our (yacht) one is blooming heavy.
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Old 19 January 2006, 13:08   #17
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Quote:
Originally Posted by Andy Moore
I wouldn't have thought so. Our (yacht) one is blooming heavy.
I am still concerned though that when upside down the thing just wouldnt be able to be used!!!

Apparently the ONLY reason RIBs have to carry them is that the proffessional boaters lot or whatever they are called said it wasn't fair that they needed to carrying them and RIBs didn't - childish sods!!!

Yes there is a risk of fire I suppose but with 500L of petrol on board I think a fast exit would be called for!!!
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Old 19 January 2006, 13:32   #18
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liferaft will sink

fast exit yes good idea for the passengers but you have a duty to make sure they are safe bobbing about 30 miles off shore in a lifejacket aint safe.

The liferaft may not save you but it does a lot better job than nothing

Jono

re BP i said attitood not aptitood
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Old 19 January 2006, 13:48   #19
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Mr Cod

I felt the same way when i started coding about liferafts, but to be honest the rules have been harmonised into one boak, so it not just ribs it effects.

And to be honest, as people have said this is an improvement over the old rules, i think the people paying are far happier now that before
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