Cruising solo in those empty waters, I'd use the PLB too. But PLB's take at least 20 minutes to send a signal to the CG ashore. Then this guy had to wait 8 hours in the water. And if there were any nearby
boats - no one knew he was in trouble.
In the coastal waters that that I
cruise in 90% of the time (East Coast US/Canada,
Bahamas, and Caribbean) the AIS
MOB is the biggest change in
MOB management in the 40 years I've been cruising.
I've seen one go off in
Maine (it was at a dock). I was eight miles away and my
chartplotter went nuts with a stick figure of a drowning man right on the
screen. Within a few minutes at least 8 boats, the CG, and two harbor patrols had all come up on 16 trying to confirm the situation. I'm sure 100 boats were in range of the
alarm.
So I've completely changed the MOB instructions when my wife and I are cruising. We always wear an
inflatable lifejacket with an AIS MOB whenever out of the
cockpit. Even
anchoring or picking up a
mooring.
If I go over the side all she has to do is stay safe herself. If she can get the
sails down and
motor back to me without endangering herself - fine - but take her time. She doesn't have to keep me in sight, or throw over a pole, or anything. Otherwise I'll wait bobbing in the lifejacket for a fisherman or patrol boat with strong guys aboard to show up and
lift me out.
Again - this isn't
offshore - but
offshore my wife isn't alone and a full crew will have no trouble turning the boat around and using the
chartplotter AIS to get back to me.