We have MOBs inside and PLBs attached to all our spinlock vests. Additionally we have their
AIS alarm installed at the nav desk.
We test them annually and have never had any issues. When the
MOB is activated, we get a mark and
alarm on our
B&G plotter, a mark and alarm on the Vesper Cortex handhelds,
DSC alarms on all the radios, and the
AIS alarm screams.