Seems at least some CG rescue craft are not equipped to pick up 406MHz
signals. Almost suggests it's best to have 406MHz and 121.5MHz until
rescuers catch up with equipment upgrades.
That's my take, but it may be wrong. I said I was confused.
Also, catamaran sailors might consider a Sawzall or equivalent as
standard equipment.

http://www.uscg.mil/deepwater/media/...adox053007.htm

--Vic