tcm
...
er, well ours were visible from yarmouth when we were lymington and wd iluminate a fair bit...
Could someone enlighten me on Lifebuoy lights?
- Thread starter Mirelle
- Start date
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Guest
Guest
I have a McMurdo jobbie ...
It's actually a spare I nabbed of a ship !! You can get them direct from McMurdo ... it uses D cell batterys and has a mercury switch inside ... standard torch bulb etc.
Hangs upside down in a spring clip (x2) and has lasted years .... just change batterys annually or more if necessary .... Make sure you use sealed metal case type ...
The only opening is the lens and bulb holder .... remove to access batterys ... no other caps or openings ...
Not cheap I bet - but reliable and long-lasting ....
It's actually a spare I nabbed of a ship !! You can get them direct from McMurdo ... it uses D cell batterys and has a mercury switch inside ... standard torch bulb etc.
Hangs upside down in a spring clip (x2) and has lasted years .... just change batterys annually or more if necessary .... Make sure you use sealed metal case type ...
The only opening is the lens and bulb holder .... remove to access batterys ... no other caps or openings ...
Not cheap I bet - but reliable and long-lasting ....
andy_wilson
Well-Known Member
Cheapest?
I have 1 Plastimo and 1 Baltic (and not the one lost previously by a charterer).
They float upright 'cos they have 4 or 5 batteries in a long tube.
They float 'cos they have a bouyant bit towards the top.
They light permanently so they can be seen as they bob up and down. Flashing ones are no good if they only flash in the troughs.
5 and 6 years old, on second set of Duracells, just clean and re-apply vaseline to o-ring each year, therefore to be recommended.
I have 1 Plastimo and 1 Baltic (and not the one lost previously by a charterer).
They float upright 'cos they have 4 or 5 batteries in a long tube.
They float 'cos they have a bouyant bit towards the top.
They light permanently so they can be seen as they bob up and down. Flashing ones are no good if they only flash in the troughs.
5 and 6 years old, on second set of Duracells, just clean and re-apply vaseline to o-ring each year, therefore to be recommended.
jrt
Well-Known Member
If it takes you anything like an hour to get a MOB back he / she will probably be dead anyway. /forums/images/graemlins/smile.gif
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Guest
Guest
Hypothermia ... kills quicker than you think !
In northern cold waters ... Hypo can kill in a matter of a few minutes ... especially if MOB person starts to swim towards a marker !! Sounds stupid but true.
sorry to be so morbid ...
In northern cold waters ... Hypo can kill in a matter of a few minutes ... especially if MOB person starts to swim towards a marker !! Sounds stupid but true.
sorry to be so morbid ...
qsiv
Well-Known Member
Re: Hypothermia ... kills quicker than you think !
[ QUOTE ]
In northern cold waters ... Hypo can kill in a matter of a few minutes ... especially if MOB person starts to swim towards a marker !! Sounds stupid but true.
sorry to be so morbid ...
[/ QUOTE ]
True - but equally you can get unexpectedly long survival times in such cases too. I personally know of one who survived close to two hours (with NO outdoor gear at all) in a temperature of 7.8 C - no life jacket either.
Just an observation - Danbouys are not a RORC requirement these days for races of lesser severity than the Fastnet, Sydney Hobart, Cascais etc. (when did you last see a new race boat with the tunnels in the transom? Late '80s? What the RORC does require is a strobe on the lifejacket, and another attached to the ring - I'd give my vote to the newest Ocean Safety strobe - it's one of the few that has consistently worked when I upend it.
Sprayhoods definitely work - a very significant number of casualties drown whilst wearing a lifejacket from spray and spume.
[ QUOTE ]
In northern cold waters ... Hypo can kill in a matter of a few minutes ... especially if MOB person starts to swim towards a marker !! Sounds stupid but true.
sorry to be so morbid ...
[/ QUOTE ]
True - but equally you can get unexpectedly long survival times in such cases too. I personally know of one who survived close to two hours (with NO outdoor gear at all) in a temperature of 7.8 C - no life jacket either.
Just an observation - Danbouys are not a RORC requirement these days for races of lesser severity than the Fastnet, Sydney Hobart, Cascais etc. (when did you last see a new race boat with the tunnels in the transom? Late '80s? What the RORC does require is a strobe on the lifejacket, and another attached to the ring - I'd give my vote to the newest Ocean Safety strobe - it's one of the few that has consistently worked when I upend it.
Sprayhoods definitely work - a very significant number of casualties drown whilst wearing a lifejacket from spray and spume.
Mirelle
N/A
In tests carried out by the Norwegian Maritime Directorate...
...(who have a serious interest in cold water survival, to say the least) a few years ago, volunteers who jumped in to cold waters wearing two black plastic bin liners lasted as long, before serious cold symptoms set in, as volunteers wearing IMO approved immersion suits!
So, if you can't run to dry suits for all on board, ( a new IMO requirement for bulk carriers, incidentally) - carry some bin liners!
My objection to theCrewsaver spray hood is that it is not at all easy to fit when one is already in cold water (and probably panicking and hyperventilating!) I am not in any sense arguing that spray hoods are not necessary. I want Crewsaver, a very fine firm, imho, to design a better one, preferably integral with the jacket and harness.
Good point about dan buoys and the RORC.
...(who have a serious interest in cold water survival, to say the least) a few years ago, volunteers who jumped in to cold waters wearing two black plastic bin liners lasted as long, before serious cold symptoms set in, as volunteers wearing IMO approved immersion suits!
So, if you can't run to dry suits for all on board, ( a new IMO requirement for bulk carriers, incidentally) - carry some bin liners!
My objection to theCrewsaver spray hood is that it is not at all easy to fit when one is already in cold water (and probably panicking and hyperventilating!) I am not in any sense arguing that spray hoods are not necessary. I want Crewsaver, a very fine firm, imho, to design a better one, preferably integral with the jacket and harness.
Good point about dan buoys and the RORC.
tome
Well-Known Member
Re: In tests carried out by the Norwegian Maritime Directorate...
Totally agree about the Crewsaver hoods. They should come as standard and be properly fixed, not an optional fiddly extra.
The time when you are most likely to swallow water is during the first minute of immersion, during which time you are going through cold shock and breathlessness. The chances of calmly getting the hood out of its pouch and fitting it are close to zero.
Interesting about the bin-liners.
Totally agree about the Crewsaver hoods. They should come as standard and be properly fixed, not an optional fiddly extra.
The time when you are most likely to swallow water is during the first minute of immersion, during which time you are going through cold shock and breathlessness. The chances of calmly getting the hood out of its pouch and fitting it are close to zero.
Interesting about the bin-liners.
Colin_S
Well-Known Member
Re: In tests carried out by the Norwegian Maritime Directorate...
I bought one recently and have binned the pouch and fitted it inside my lifejacket. This was after trying it in the comfort of my lounge where it still took ages to open the thing out - akin to trying to reuse clingfilm.
I bought one recently and have binned the pouch and fitted it inside my lifejacket. This was after trying it in the comfort of my lounge where it still took ages to open the thing out - akin to trying to reuse clingfilm.