glad to help, personally I thought having one was a bit OTT for a cuddy never run with the cover up but being a bit a worrier I borrowed the one from above our solid fuel boiler as its never burning over summer, now I have one regardless as I forgot it a few times. Very easy to see that someone could be reading below decks and would pass out and the rescuer also be put at risk.
Fire Alarms is another - terrifies me going anywhere without one. We did plan an escape route through the hatch if the door was on fire but wonder A, how much time one would have from alarm to burning feet covered in molten plastic? or more specifically - B - would our combined fat ass's fit through the window hatch ? needless to say that was the end of that conversation
Did you also know that rescuing someone below desks could be fatal, RNLI had a water filled yacht crew went down to rescue the owner and were over come - passed out - 3rd crew similar, 4th crew had to drag out all 3 - turned out the salt water on lead acid batteries causes sulphuric or chlorine gas (if I recall correctly) which is as deadly as CO - not that you are likely to go down into a sinking yacht or remember but interesting none the less.