CrewWatcher Man Overboard App
CrewWatcher Man Overboard System is an app-based man overboard (MOB) alarm system that has two components: a smartphone app and a beacon. The alarm will sound automatically when a crew member goes missing, and it provides lat/long coordinates where the MOB occurred, the time of the event, and bearing and distance back to the target. No cell service is required.
One phone or tablet monitors up to five beacons; great for pets, too. MSRP $89.99 per beacon, the man overboard app is free.