Originally Posted by
HeliComparator
In any case, if you are unfortunately trapped underwater, a water-activated PLB would be pointless even as an aid to recovering bodies due to the fact that VHF radio doesn't propagate well through seawater. I suppose you could carry sonar pingers but that seems a bit morbid.
Very true..I was just curious as to if water activated PLBs actually are available.
It may be useful technology in the case of a ditching where folks are floating but injured or hypothermic and therefore unable to manually activate a PLB.