While laws under your flag may require EPIRBs, the 2*PLB option may be very attractive to boats registered under other flags
if they intend to carry them on watch (for MoB
situations). A GPS
equipped PLB should not require a particularly strong homing signal, given the rescue
vessel will be vectored in quite precisely by the RCC.
? PLB may be a good option for 'boat hoppers' if, in your area, they get registered to an individual vs. a ship. Have been told, however, their signal can be weak if they are not held clear of the water
. An EPIRB can float free ...